Sports

30 pages, 350 KiB

Open AccessReview

The Importance of Physical Fitness Parameters in Rhythmic Gymnastics: A Scoping Review

by Vasiliki Gaspari, Gregory C. Bogdanis, Ioli Panidi, Andreas Konrad, Gerasimos Terzis, Anastasia Donti and Olyvia Donti

Sports 2024, 12(9), 248; https://doi.org/10.3390/sports12090248 - 7 Sep 2024

Abstract

This scoping review presents an overview of physical fitness parameters in rhythmic gymnastics as well as the association of fitness with gymnasts’ performance, competitive level, and age. PubMed, Scopus, and Sport Discus databases were searched. Of the 586 records retrieved, 41 studies met [...] Read more.

This scoping review presents an overview of physical fitness parameters in rhythmic gymnastics as well as the association of fitness with gymnasts’ performance, competitive level, and age. PubMed, Scopus, and Sport Discus databases were searched. Of the 586 records retrieved, 41 studies met the inclusion criteria (n = 1915 participants). The included studies examined flexibility, aerobic capacity, muscle power, muscle endurance, muscle strength, sprint speed, agility, balance, and coordination. Performance was associated with flexibility, aerobic capacity, lower-limb muscle power, agility, muscular endurance, balance, and coordination from a young age. Flexibility, aerobic capacity, and muscle power were, in general, higher in high-level gymnasts than in low-level gymnasts or controls. Older rhythmic gymnasts demonstrated higher scores than the younger ones in flexibility, aerobic capacity, balance, and sport-specific coordination but not in muscle endurance, while some studies reported a decline in muscle power with age. Supplementary physical fitness training improved all physical abilities irrespective of the gymnasts’ level. Rhythmic gymnastics training alone improved muscle power, agility, speed, muscular endurance, and balance to a lesser extent than targeted fitness training. Muscular strength, speed, and agility are largely under-researched in rhythmic gymnastics. Emphasis should be given to targeted strength and power training due to the high mechanical loads placed on skeletally immature athletes. Full article

(This article belongs to the Special Issue Factors and Biological Mechanisms Underlying Exercise Performance in Children)

11 pages, 468 KiB

Open AccessArticle

Improved Antioxidant Status after Diet Supplementation with Novel Natural-Based Supplement in Combat Athletes

by Adrian Tirla, Simona Ioana Vicas, Teodora Bianca Sirca, Corina Cinezan and Simona Cavalu

Sports 2024, 12(9), 247; https://doi.org/10.3390/sports12090247 - 7 Sep 2024

Abstract

Background: Intense physical activity is known to generate high levels of oxidative stress, and supplementation with bioactive products with powerful antioxidant effects is often recommended. In this context, the present study aims to evaluate the potential benefits of supplementing the diet of professional [...] Read more.

Background: Intense physical activity is known to generate high levels of oxidative stress, and supplementation with bioactive products with powerful antioxidant effects is often recommended. In this context, the present study aims to evaluate the potential benefits of supplementing the diet of professional combat fighters with a new bioactive formulation based on Aronia melanocarpa (black chokeberry) and bee pollen, a natural combination with a balanced ratio of macro- and micronutrients, rich in proteins and polyphenols. Methods: A total of 31 professional combat fighters were selected to participate in this study. Due to allergic medical history, two were excluded, and the remaining 29 were divided into two groups: 14 in the control and 15 in the supplementation group. The supplemented group consumed daily 40 g of novel supplement based on a combination of dried black chokeberry and bee pollen (1:2 ratio) for 4 weeks. Results: A statistically significant increase in plasma antioxidant capacity was observed in the supplemented group compared to control related to the time and group factors at the end of this study. During this study, a significant increase in neutrophils was recorded in both groups. Supplementation with black chokeberry and bee pollen generated no significant modifications in inflammatory markers, body composition, glycemia, maximum aerobic capacity, blood glycemia, hemoglobin or red cell line. Conclusion: This clinical study pointed out a positive result in terms of plasma antioxidant capacity upon administration of the novel nutraceutical formulation. Full article

(This article belongs to the Special Issue Exploring the Role of Acute Supplementation in Exercise Performance)

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15 pages, 4580 KiB

Open AccessArticle

Optimizing Technical Training for Wheelchair-User Billiard Players through Modified Equipment Implementation

by Viktoriia Nagorna, Artur Mytko, Olha Borysova, Liubov Zhyhailova and Silvio R. Lorenzetti

Sports 2024, 12(9), 246; https://doi.org/10.3390/sports12090246 - 6 Sep 2024

Abstract

This study aims to enhance the effectiveness of the preparation process and the performance of wheelchair users in international billiard competitions through modified equipment. The research methods include analysis and synthesis of the scientific and methodological literature, sociological research methods (questionnaires), expert assessment [...] Read more.

This study aims to enhance the effectiveness of the preparation process and the performance of wheelchair users in international billiard competitions through modified equipment. The research methods include analysis and synthesis of the scientific and methodological literature, sociological research methods (questionnaires), expert assessment methods, pedagogical research methods (observation, testing, experimentation), and methods of mathematical statistics. The results of our study are significant: Implementing our developed training program for billiards players with musculoskeletal disorders, utilizing the modified equipment (special mechanical bridge and straps for cue fixation during shots) we created in a pedagogical experiment, demonstrated a probable improvement of 36% in the technical and tactical preparedness of the athletes compared to previous years. This led to a 33% increase in players from the Ukrainian team’s competition performance at the national and European Pool Championships (wheelchair division). In conclusion, implementing our developed training program, accompanied by specialized auxiliary equipment, demonstrated promising results in a pedagogical experiment. These findings underscore the potential of the modified equipment and tailored training programs to optimize sports training for individuals with musculoskeletal impairments in adaptive billiards, contributing to the continued humanization of the sport and offering an effective preparation process for the athletes. Full article

(This article belongs to the Special Issue Sports and Paralympic Sports Physiology: Environmental, Training, Physiology and Other Variables Related to Performance and Performance)

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17 pages, 1604 KiB

Open AccessReview

Menstrual Dysfunction in Adolescent Female Athletes

by Valeria Calcaterra, Matteo Vandoni, Alice Bianchi, Agnese Pirazzi, Lara Tiranini, Paola Baldassarre, Marianna Diotti, Caterina Cavallo, Rossella Elena Nappi and Gianvincenzo Zuccotti

Sports 2024, 12(9), 245; https://doi.org/10.3390/sports12090245 - 4 Sep 2024

Abstract

Despite the benefits of exercise on mental and physical health, excessive training loads can lead to health problems in the long term, including a wide spectrum of menstrual dysfunction (MD). This narrative review aims to analyze the relationship between physical exercise and MD [...] Read more.

Despite the benefits of exercise on mental and physical health, excessive training loads can lead to health problems in the long term, including a wide spectrum of menstrual dysfunction (MD). This narrative review aims to analyze the relationship between physical exercise and MD in adolescent female athletes to support regular menstrual health monitoring and promote educational programs on reproductive risks. When dealing with MD in young athletes, several factors entangled with maturation of the hypothalamus–pituitary–ovarian axis should be considered. Firstly, some disciplines seem to have a higher prevalence of MD due to the high loads of training regimes and the early introduction of athletes to a competitive career. Moreover, low energy intake and a low body mass index appear to exacerbate existing MD. Lastly, disordered eating behaviors and psychological stress can contribute to MD in female athletes. The type of sport, influencing the intensity and duration of exercise, as well as individual psycho-physiological and environmental factors, may influence the role of physical activity in the manifestation of MD. Early recognition and management of MD, along with collaboration between sports organizations and health professionals, are crucial to minimize risks, ensure proper nutrition, and balance training with recovery. Keeping an open discussion on the topic may prospectively improve awareness, early diagnosis, and treatment strategies, as well as reduce injury risk and enhance sports performance. Full article

(This article belongs to the Special Issue Focus on the Health of Young Athletes and Team Sports Performance)

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15 pages, 296 KiB

Open AccessArticle

Unveiling Players’ Perceptions of Mother- and Father-Initiated Motivational Climates and Fear of Failure in Youth Male Team Sports

by Patrícia Coutinho, Cristiana Bessa, Cláudia Dias, Isabel Mesquita and António M. Fonseca

Sports 2024, 12(9), 244; https://doi.org/10.3390/sports12090244 - 4 Sep 2024

Abstract

The aim of this study was to examine the relationship between perceived mother- and father-initiated motivational climates and players’ fear of failure in youth male team sports. A sample of 336 youth male players from five team sports (basketball, football, handball, volleyball, and [...] Read more.

The aim of this study was to examine the relationship between perceived mother- and father-initiated motivational climates and players’ fear of failure in youth male team sports. A sample of 336 youth male players from five team sports (basketball, football, handball, volleyball, and water polo) completed the Parent-Initiated Motivational Climate Questionnaire-2 and the Performance Failure Appraisal Inventory. The results showed that perceived mother- and father-initiated motivational climates were related to fear of failure predispositions. While a mastery orientation (perceived learning-enjoyment climate) had a low association with fear of failure, an ego orientation (perceived worry-conducive and success-without-effort climates) was highly related to fear of failure. Father-initiated climates had stronger associations with fear of failure than mother-initiated ones, revealing that mothers and fathers may have different influences when considering the developmental origins of fear of failure. The relationships between mother- and father-initiated motivational climates and fear of failure varied according to the type of sport, with basketball, football, and volleyball presenting stronger associations. The dimensions “Fear of important others losing interest” and “Fear of upsetting important others” presented the highest explained variance in all sports when predicted by the father-initiated motivational climate. The findings can inform important evidence-based guidelines and recommendations for parents, coaches, and organizations, enabling them to create supportive environments that aid athletes in developing the necessary psychological skills for long-term success and well-being. Full article

12 pages, 1079 KiB

Open AccessArticle

Higher Unilateral Muscle Imbalance at the Contralateral Knee 6 Months after Anterior Cruciate Ligament Reconstruction

by Leonor López de Dicastillo, Jesús Villalabeitia, Diego Delgado, Cristina Jorquera, Renato Andrade, João Espregueira-Mendes, Patrick Middleton and Mikel Sánchez

Sports 2024, 12(9), 243; https://doi.org/10.3390/sports12090243 - 4 Sep 2024

Abstract

There are a considerable number of patients who, after anterior cruciate ligament reconstruction (ACL), suffer from relapses or reduced performance. Data collected from isokinetic dynamometry can provide useful information on the condition of the knee during rehabilitation. Seventy-one young sports patients with ACL [...] Read more.

There are a considerable number of patients who, after anterior cruciate ligament reconstruction (ACL), suffer from relapses or reduced performance. Data collected from isokinetic dynamometry can provide useful information on the condition of the knee during rehabilitation. Seventy-one young sports patients with ACL reconstruction performed concentric (CON) isokinetic dynamometry (CON/CON 90°/s and CON/CON 240°/s) to assess the muscle strength of the quadriceps (Q) and hamstrings (H) in both knees at 6 months after ACL reconstruction. Limb symmetry index (LSI) and the H/Q ratio were calculated. Comparative statistical tests and multivariate regression were performed. At 90°/s, 57 patients (80.3%) had an LSI below 90% for quadriceps and 28 (60.6%) for hamstring. The number of imbalanced patients according to H/Q ratio was higher in the non-operated knee (n = 56, 78.9%) (p < 0.001). At 240°/s, 49 cases (69.1%) had LSI values above 90% for quadriceps and 37 (52.1%) for hamstrings. Regarding H/Q, imbalanced cases were higher in the non-operated limb (n = 60, 84.5%) (p < 0.001). Strength data at 6 months after ACL reconstruction and post-operative rehabilitation indicated greater unilateral (H/Q) muscle imbalance in the non-operated knee than in the operated knee. Most patients did not achieve the adequate LSI values. Full article

(This article belongs to the Special Issue Sport Injuries, Rehabilitation and New Technologies)

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9 pages, 2192 KiB

Open AccessArticle

Comparison of Inter-Rater and Intra-Rater Reliability of Raters with Different Levels of Experience When Using Landing Error Scoring System (LESS) in Field-Based Screening of Professional Football Players

by Nikolaos I. Liveris, Charis Tsarbou, Sofia A. Xergia, Angelos Papadopoulos and Elias Tsepis

Sports 2024, 12(9), 242; https://doi.org/10.3390/sports12090242 - 3 Sep 2024

Abstract

It is essential for physical sports therapists to use reliable field-based tests to identify potential injury risk factors in athletes. The purpose of this study was to compare the inter- and intra-rater reliability of experienced and novice raters during use of the Landing [...] Read more.

It is essential for physical sports therapists to use reliable field-based tests to identify potential injury risk factors in athletes. The purpose of this study was to compare the inter- and intra-rater reliability of experienced and novice raters during use of the Landing Error Scoring System (LESS) in a field-based examination of professional football athletes. Thirty-seven male football athletes underwent pre-season LESS assessment. Two raters independently evaluated the recorded landing techniques at two separate intervals, two months apart, following the LESS standard protocol. Inter-and intra-rater values were calculated for the LESS total scores and individual scoring items. The overall LESS scores had excellent intra-rater reliability values for both the experienced (interclass correlation coefficient (ICC) = 0.95, 95% CI, 0.89–0.97; p < 0.001) and novice rater (ICC = 0.95, 95% CI, 0.90–0.97; p < 0.001), and very good to excellent inter-rater values for the first (ICC = 0.90, 95% CI, 0.77–0.95; p < 0.001) and second (ICC = 0.86, 95% CI, 0.71–0.93; p < 0.001) evaluation. Most of the individual scoring items ranged from moderate to perfect agreement. In conclusion, sports physical therapists, regardless of experience, can reliably use the LESS’s total score, through video analysis of the regime. Individual scoring items can inform clinicians about impairments in the landing mechanism but data should be interpreted cautiously. Full article

(This article belongs to the Special Issue Cutting-Edge Research on Physical Fitness Profile in Soccer Players)

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10 pages, 659 KiB

Open AccessArticle

Heat Attainment and Retention in Surfers with and without a Land-Based Warm-Up and Accompanying Passive Heat Retention

by Christian J. Cook, Benjamin G. Serpell, Lauren J. Hanna, Aaron Fox and Phillip J. Fourie

Sports 2024, 12(9), 241; https://doi.org/10.3390/sports12090241 - 2 Sep 2024

Abstract

Surfing is a growing, high-participation recreational and competitive activity. It is relatively unique, being performed on, in, and through water with a range of temperatures. In other sports, warm-up and heat retention have proved useful at augmenting performance and ameliorating injury risk. Little [...] Read more.

Surfing is a growing, high-participation recreational and competitive activity. It is relatively unique, being performed on, in, and through water with a range of temperatures. In other sports, warm-up and heat retention have proved useful at augmenting performance and ameliorating injury risk. Little work has been carried out examining this in surfing. The purpose of this work was to measure thermal profiles in surfers with and without warm-up and passive heat retention, and secondarily to assess any potential influence on free surfing. A repeated measures pre- and post- design was adopted whereby participants surfed in an artificial wave pool following an active warm-up combined with passive heat retention (experimental condition) and after no warm-up (control). Core body temperature was measured both occasions. Our results showed increases in core body temperature were greater for the experimental condition versus control (p = 0.006), and a time effect exists (p < 0.001)—in particular, a warm-up effect in the water itself was shown in both groups, possibly due to further activity (e.g., paddling) and wetsuit properties. Finally, performance trended to being superior following warm-up. We conclude that body warmth in surfers may be facilitated by an active warm-up and passive heat retention. In free surfing, this is associated with a trend towards better performance; it may also reduce injury risk. Full article

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12 pages, 296 KiB

Open AccessArticle

Prevalence and Factors Associated with Mental Health Complaints in Japanese Collegiate Athletes

by Takeshi Kimura, Aleksandra Mącznik, Akira Kinoda, Yuichi Yamada, Yuki Muramoto, Yoshinori Katsumata and Kazuki Sato

Sports 2024, 12(9), 240; https://doi.org/10.3390/sports12090240 - 2 Sep 2024

Abstract

Investigations into mental health epidemiology in various cultural contexts were one of the main recommendations by the recent consensus statement on mental health in athletes, but the evidence in different sporting populations is rising slowly. This study aimed to investigate the prevalence of [...] Read more.

Investigations into mental health epidemiology in various cultural contexts were one of the main recommendations by the recent consensus statement on mental health in athletes, but the evidence in different sporting populations is rising slowly. This study aimed to investigate the prevalence of mental health complaints in Japanese collegiate athletes. The online survey was sent to the Japanese collegiate athletes associated with UNIVAS asking about the mental health complaints experienced during their sporting careers. Out of 10,999 athletes, 269 (2.4%) reported at least one complaint. Mental health complaints were more prevalent in female (3.6%) than male (1.5%) athletes. Skill sports had the highest prevalence (4.1%) of mental health complaints, and power sports had the lowest prevalence (1.5%) of mental health complaints. This study found a very low prevalence of self-reported mental health complaints in Japanese collegiate athletes. Preventive efforts should focus on monitoring early symptoms (rather than diagnoses), especially in skill sports and female athletes. Anxiety (38%) and depression (35%) were the most reported complaints and should be targeted first. Full article

19 pages, 478 KiB

Open AccessArticle

Investigating Correlation between Exercise Participation Motivation and Social Physique Anxiety and Their Differences across Exercise Stages of Change

by Erdal Macila, Erman Dogan and Nuriye Sancar

Sports 2024, 12(9), 239; https://doi.org/10.3390/sports12090239 - 31 Aug 2024

Abstract

This study aims to investigate the correlation between exercise participation motivation and social physique anxiety and their differences across the exercise stages of change in individuals. A convenience sampling technique was used to gather data from 374 sedentary individuals aged 18 and over, [...] Read more.

This study aims to investigate the correlation between exercise participation motivation and social physique anxiety and their differences across the exercise stages of change in individuals. A convenience sampling technique was used to gather data from 374 sedentary individuals aged 18 and over, using a questionnaire that included the Behavioral Regulations in Exercise Questionnaire-2 (BREQ-2), Social Physique Anxiety (SPA) scale, and Exercise Stages of Change Questionnaire (ESOCQ). Welch’s ANOVA test was utilized to examine if there were significant differences between the average levels of behavioral regulations in exercise and SPA within exercise stages of change, respectively. Based on Welch’s ANOVA results, it has been found that there are significant differences in the total score of SPAS according to exercise stages of change (F = 15.801, p < 0.001). Furthermore, the sub-factors intrinsic regulation, introjected regulation, and external motivation statistically significantly differ according to exercise stages of change (

F = 6.681

, p < 0.001 for IR;

F = 30.186,

p < 0.001 for introjected regulation;

F = 10.104

, p < 0.001 for external motivation,

F = 0.481,

p = 0.750 for AM). Pearson’s r correlation coefficients were also computed to determine the relationship between behavioral regulations in exercise and SPA. A significant negative moderate correlation was found between intrinsic regulation and SPA (r = −0.645, p < 0.001). Furthermore, a significant medium positive correlation was found between introjected regulation and SPA (r = 0.534, p < 0.001), external motivation and SPA (r = 0.588, p < 0.001), and amotivation and SPA (r = 0.564, p < 0.001). The findings suggest that being self-motivated for exercise might decrease SPA. On the other hand, exercise motivated by external pressures could lead to increased SPA. The findings also suggest that those who started exercising with intrinsic motivation reached more advanced stages of exercise than those who started exercising with extrinsic factors. Finally, extrinsic motives may help in the first stages of the exercise, but intrinsic motives are required to continue the exercise. Consequently, these findings may guide physical activity specialists, trainers, etc., to develop more effective strategies to motivate exercise participation by considering social physique anxiety among individuals. Full article

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14 pages, 312 KiB

Open AccessArticle

Sociodemographic Factors Related to Perceived Physical Activity on Chilean Adults after COVID-19 Pandemic

by Rodrigo Gallardo-Rodríguez, Felipe Poblete-Valderrama, Viviana Rodas-Kürten and João Paulo Vilas-Boas

Sports 2024, 12(9), 238; https://doi.org/10.3390/sports12090238 - 30 Aug 2024

Abstract

The current study aimed to examine the relationship between sociodemographic variables (i.e., sex, age, marital status, educational level, socioeconomic status, and working mode) and physical activity levels declared by Chilean adults. The sample comprised 483 Chilean adults, 159 men (32.9%) and 324 women [...] Read more.

The current study aimed to examine the relationship between sociodemographic variables (i.e., sex, age, marital status, educational level, socioeconomic status, and working mode) and physical activity levels declared by Chilean adults. The sample comprised 483 Chilean adults, 159 men (32.9%) and 324 women (67.1%) aged from 18 to 69 years old (36.5 ± 12.0). The participants completed an ad hoc sociodemographic online survey between December 2022 and March 2023 that included questions about characteristics of participants such as sex, age, educational level, household income, marital status, and working mode. Vigorous, moderate, and walking activities were measured using the International Physical Activity Questionnaire-Short Form (IPAQ-SF), a self-administered questionnaire. Men declared significantly higher vigorous and moderated physical activity than women. People aged 18 to 25, single or unmarried, and with the lowest household income, showed significantly higher scores in vigorous physical activity than those aged 26 to 45, cohabiting with a partner or married, and middle household income, respectively. Regarding working mode, people working at their job site said walking more than people not working, working in a hybrid mode, and working online. Our findings suggest that promoting strategies that increase physical activity during the pandemic is necessary to avoid health problems. Full article

11 pages, 291 KiB

Open AccessArticle

Longitudinal Relationships of Physical Activity, Sedentary Time, Cardiorespiratory Fitness, and Muscular Fitness with Body Fatness in Preschoolers

by Kirkke Reisberg, Eva-Maria Riso, Liina Animägi and Jaak Jürimäe

Sports 2024, 12(9), 237; https://doi.org/10.3390/sports12090237 - 30 Aug 2024

Abstract

There is still insufficient knowledge about the potential benefits of physical activity and fitness or the adverse impact of sedentary behaviours on body composition at preschool age. Therefore, we aimed to study the relationships of moderate-to-vigorous physical activity (MVPA), sedentary time (ST), cardiorespiratory [...] Read more.

There is still insufficient knowledge about the potential benefits of physical activity and fitness or the adverse impact of sedentary behaviours on body composition at preschool age. Therefore, we aimed to study the relationships of moderate-to-vigorous physical activity (MVPA), sedentary time (ST), cardiorespiratory fitness (CRF), and muscular fitness (MF) with body fat percentage (BF%) in boys and girls. Participants were investigated twice: in the final year of kindergarten, when the boys’ median age was 7 years and the girls’ median age was 6 years (p = 0.240), and again in the first grade of school. MVPA and ST were measured with an accelerometer, BF% was derived from skinfold thicknesses, CRF was measured with a 20 m shuttle run test, and MF was represented by the mean z-scores from standing long jump and relative upper-limb strength. In girls, higher ST (β = 0.587, p = 0.021) and lower MF (β = −0.231, p = 0.009) at preschool age were related to higher BF% in the first grade of school after adjustment for confounders. MVPA and CRF in preschool children were unrelated to BF% in school among boys and girls. In conclusion, sitting less and having greater muscular fitness at preschool age appear to be beneficial for lower body fatness in the first grade among girls, but not in boys. MVPA and CRF at preschool age are unrelated to body fatness at school age in boys and girls. Our results indicate that girls may especially benefit from decreasing sedentary behaviours and increasing upper- and lower-limb muscular strength at preschool age for a healthy weight profile in the first grade of school. Full article

(This article belongs to the Special Issue Physical Activity, Sedentary Behaviors and Exercise Interventions in Children)

8 pages, 418 KiB

Open AccessArticle

Anaerobic and Aerobic Metabolic Capacities Contributing to Yo-Yo Intermittent Recovery Level 2 Test Performance in Australian Rules Footballers

by Mitchell Mooney, Ryan Worn, Matt Spencer and Brendan J. O’Brien

Sports 2024, 12(9), 236; https://doi.org/10.3390/sports12090236 - 30 Aug 2024

Abstract

This study aimed to identify the aerobic and anaerobic metabolic performance capacities contributing to Yo-Yo Intermittent Recovery level 2 (Yo-Yo IR2) test performance. Nineteen recreational Australian footballers completed a Yo-Yo IR2 test, and on another day a treadmill peak oxygen uptake (VO_2peak [...] Read more.

This study aimed to identify the aerobic and anaerobic metabolic performance capacities contributing to Yo-Yo Intermittent Recovery level 2 (Yo-Yo IR2) test performance. Nineteen recreational Australian footballers completed a Yo-Yo IR2 test, and on another day a treadmill peak oxygen uptake (VO_2peak) and maximal accumulated oxygen deficit test in a randomised counter-balanced order. The maximal accumulated oxygen deficit (MAOD) procedures included 5 × 5 min sub-maximal continuous runs at progressively higher speeds whilst VO₂ was recorded; thereafter, speed was incrementally increased to elicit VO_2peak. After 35 min of rest, participants ran at a speed equivalent to 115% of VO_2peak until exhaustion, at which point expired air was collected to determine maximal accumulated oxygen deficit. Relationships between variables were assessed using Pearson’s correlation and partial correlations. Maximum aerobic speed, relative intensity, and VO_2peak were significantly correlated with Yo-Yo IR2 performance. High Yo-Yo IR2 performers also had higher MAS, relative intensity, and VO_2peak levels. However, when higher maximum aerobic speed, relative intensity, and VO_2peak were controlled for each other and analysed independently, neither maximal aerobic speed nor VO_2peak correlated with Yo-Yo IR2 performance. Yo-Yo IR2 performance is the result of a complex interaction between several variables. Training programs should primarily focus on improving VO_2peak, maximal aerobic speed, and relative intensity to optimize Yo-Yo IR2 test performance. Full article

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16 pages, 504 KiB

Open AccessArticle

Associations of School-Level Factors and School Sport Facility Parameters with Overweight and Obesity among Children and Adolescents in Pakistan: An Empirical Cross-Sectional Study

by Moazzam Tanveer, Ejaz Asghar, Georgian Badicu, Umar Tanveer, Nadeem Roy, Asifa Zeba, Sameer Badri Al-Mhanna and Alexios Batrakoulis

Sports 2024, 12(9), 235; https://doi.org/10.3390/sports12090235 - 28 Aug 2024

Abstract

Childhood overweight and obesity are increasingly prevalent in Pakistan, posing significant public health challenges. This study explores the associations of school-level factors and school sports facility parameters with overweight and obesity among children and adolescents in Pakistan. A cross-sectional study across seven random [...] Read more.

Childhood overweight and obesity are increasingly prevalent in Pakistan, posing significant public health challenges. This study explores the associations of school-level factors and school sports facility parameters with overweight and obesity among children and adolescents in Pakistan. A cross-sectional study across seven random districts in Punjab province, Pakistan, was conducted using a representative multistage random cluster sample. Underweight (BMI < 5th percentile), overweight (85th ≤ BMI < 95th percentile), and obese (95th percentile ≤ BMI) were defined using the US Center for Disease Control (CDC) 2000 criteria. Statistical analyses including the Chi-square test, Pearson correlation coefficient, and linear regression were performed to investigate predictive characteristics. Logistic regression analysis assessed the simultaneous impact of several covariates on dichotomous outcomes, with 95% confidence intervals (CIs) computed and a significance level set at p < 0.05. The study included 4108 Pakistani school children aged 9 to 17 years (mean age = 13.92 years, 59.3% boys) from 62 schools. The prevalence of overweight and obesity was 19.4% and 10.7%, respectively. Findings revealed a concerning lack of physical education activities (60% reported 0 sessions per week), morning exercise (60%), and classroom exercises (66%) among school-aged children. Leadership attitudes toward physical education (β = 0.04, p = 0.006) and students’ satisfaction with the playground (β = 0.05, p = 0.015) showed significant associations with body weight status. Conversely, provision of physical education facilities, effective fund utilization for physical education, meeting school sports facility requirements, and weekend opening of school sports grounds did not significantly impact weight status. Satisfaction with the playground was significantly associated with a lower risk of overweight (OR 0.81, 95% CI 0.69–0.95, p < 0.05), indicating reduced overweight likelihood among students satisfied with school playgrounds. The study underscores significant gaps in promoting physical activity within school environments and highlights the urgent need for interventions to enhance physical education resources and sports facilities, aiming to create healthier school environments and reduce overweight and obesity prevalence among students. Further research and interventions are crucial for promoting lifelong physical activity habits and improving student health and well-being. Full article

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11 pages, 1545 KiB

Open AccessArticle

Validity and Reliability of Wearable Technology Devices during Simulated Pickleball Game Play

by James W. Navalta, Bryson Carrier, Matahn Blank, Setareh Zarei, Dustin W. Davis, Micah Craig, Olivia R. Perez, Jacob Baca, Thea S. Sweder, Tashari Carballo and Jamaal Bovell

Sports 2024, 12(9), 234; https://doi.org/10.3390/sports12090234 - 28 Aug 2024

Abstract

Pickleball is a popular sport. Also popular is wearable technology usage. Because the validity and reliability of wearable technology during pickleball is unknown, the purpose of this research was to evaluate the ability of common devices to return heart rate and estimated energy [...] Read more.

Pickleball is a popular sport. Also popular is wearable technology usage. Because the validity and reliability of wearable technology during pickleball is unknown, the purpose of this research was to evaluate the ability of common devices to return heart rate and estimated energy expenditure during pickleball activity. Twenty adult participants were outfitted with a portable metabolic unit and heart rate monitor (criterion measures). Experimental devices were a Garmin Instinct, Polar Vantage M2, Polar OH1, and Polar Verity Sense. Participants played simulated pickleball for 10 min. Validity measures included mean absolute percent error (MAPE) and Lin’s Concordance Correlation Coefficient (CCC), whereas reliability measures included coefficient of variation (CV) and intraclass correlation coefficient (ICC). The heart rate returned lower than 10% MAPE across all devices (Instinct = 5.73–6.32%, Verity Sense = 2.92–2.97%, OH1 = 3.39–3.45%) and greater than 0.85 CCC (Instinct = 0.85–0.88, Verity Sense = 0.96–0.96, OH1 = 0.93–0.94). The CV was below 10% (Instinct = 9.30%, Verity Sense = 2.68%, OH1 = 5.01%), and ICC was above 0.7 (Instinct = 0.77, Verity Sense = 0.98, OH1 = 0.91). The energy expenditure MAPE was greater than 10% (Instinct = 27.67–28.08%, Vantage M2 = 18.87–23.38%) with CCC lower than 0.7 (Instinct = 0.47–0.49, Vantage M2 = 0.62–0.63). Reliability thresholds were met in the Vantage M2 (CV = 6%, ICC = 0.98) but not in the Instinct (CV = 15%, ICC = 0.86). The Instinct was neither valid nor reliable for estimated energy expenditure, while the Polar Vantage M2 was reliable but not valid. All devices returned valid and reliable heart rates during pickleball. Full article

(This article belongs to the Special Issue Human Physiology in Exercise, Health and Sports Performance)

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13 pages, 846 KiB

Open AccessFeature PaperArticle

Developing Accurate Repetition Prediction Equations for Trained Older Adults with Osteopenia

by Rose Beia, Alfred Wassermann, Sebastian Raps, Jerry Mayhew, Michael Uder and Wolfgang Kemmler

Sports 2024, 12(9), 233; https://doi.org/10.3390/sports12090233 - 28 Aug 2024

Abstract

The aim of this study was to evaluate prediction equations to estimate 1RM in different exercises in older men and women with osteopenia/osteoporosis. Forty well-trained older women and men (73 ± 8 years) with osteopenia/osteoporosis performed 1RM dynamic and isometric maximum strength tests [...] Read more.

The aim of this study was to evaluate prediction equations to estimate 1RM in different exercises in older men and women with osteopenia/osteoporosis. Forty well-trained older women and men (73 ± 8 years) with osteopenia/osteoporosis performed 1RM dynamic and isometric maximum strength tests on resistance devices. In addition, each participant performed repetitions-to-fatigue (RTF) in the 5–8RM, 9–12RM, and 13–16RM zones. After evaluating the predictive performance of available 1RM prediction equations from the literature, new prediction equations were developed for all seven exercises. One of the available equations that focus on postmenopausal women already acceptably predicted 1RM from RTF for all but one exercise. Nevertheless, new exercise-specific prediction equations based on a cubic polynomial most accurately predict 1RM from RTF in the 5–8 reps range with mean absolute differences between predicted and actual 1RM of 3.7 ± 3.7% (leg-press) to 6.9 ± 5.5% (leg flexion) that is roughly within the acceptable coefficient of variation. For some exercises, the inclusion of the isometric maximum strength tests slightly increases the prediction performance of the 5–8RM. In conclusion, the present prediction equation accurately estimates 1RM in trained, older women and men with osteopenia/osteoporosis. Further evaluation of this new equation is warranted to determine its applicability to different age groups and populations. Full article

(This article belongs to the Special Issue Competition and Sports Training: A Challenge for Public Health)

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11 pages, 1131 KiB

Open AccessArticle

Investigating Runner’s High: Changes in Mood and Endocannabinoid Concentrations after a 60 min Outdoor Run Considering Sex, Running Frequency, and Age

by Theresia Weiermair, Eva Svehlikova, Beate Boulgaropoulos, Christoph Magnes and Anita Eberl

Sports 2024, 12(9), 232; https://doi.org/10.3390/sports12090232 - 28 Aug 2024

Abstract

Runner’s high is a euphoric emotional state occurring during and post-physical exercise. Although previous data indicate endocannabinoids’ involvement in animal runner’s high, their role in human runner’s high remains to be established. We investigated runner’s high in healthy humans assessing mood and plasma [...] Read more.

Runner’s high is a euphoric emotional state occurring during and post-physical exercise. Although previous data indicate endocannabinoids’ involvement in animal runner’s high, their role in human runner’s high remains to be established. We investigated runner’s high in healthy humans assessing mood and plasma endocannabinoid concentration changes pre- and post a 60 min outdoor run, considering sex (8 females/8 males), running frequency (4 occasional/12 regular runners) and age (median split 36 years). Mood, AEA, and 2-AG concentrations were significantly increased post-run considering all participants (p < 0.0001, p < 0.0001, p < 0.01, respectively), with 2-AG varying more than AEA concentrations. Concentrations of both endocannabinoids increased pre- to post-run in women (p < 0.01) but the AEA concentration increase was higher in females than in males (p < 0.05). Post-run concentration increase appeared to be more pronounced in occasional than in regular runners for 2-AG but not for AEA. However, regular runners experienced stronger mood increases and better post-run mood than occasional runners. Post-run endocannabinoid concentrations were increased regardless of age. AEA concentrations and their post-run changes were less affected by running frequency and age than those of 2-AG. These findings provide insights into the interplay of physical exercise, physiological/psychological factors and demographics, laying a valuable foundation for future research. Full article

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15 pages, 843 KiB

Open AccessArticle

Anaerobic Performance Profiling in Elite Amateur Boxers

by Tomas Venckunas, Vidas Bruzas, Audrius Snieckus, Loreta Stasiule, Audinga Kniubaite, Mantas Mickevicius, Sigitas Kamandulis and Arvydas Stasiulis

Sports 2024, 12(9), 231; https://doi.org/10.3390/sports12090231 - 27 Aug 2024

Abstract

While anaerobic fitness is highly important for the performance in Olympic (amateur) boxing, the relationship between anaerobic performance metrics is poorly understood, and profiling boxers according to their anaerobic capacity is still a challenge. With the current study in elite amateur boxers, we [...] Read more.

While anaerobic fitness is highly important for the performance in Olympic (amateur) boxing, the relationship between anaerobic performance metrics is poorly understood, and profiling boxers according to their anaerobic capacity is still a challenge. With the current study in elite amateur boxers, we aimed to compare the metabolic and cardiovascular responses to different maximal tests and the intercorrelations between performance indices (peak and mean power, duration of the test, punching frequency) of several all-out tests and their correlation to physiological response metrics (blood lactate and heart rate, HR). Twelve male Olympic boxers performed a battery of tests, including 30 s Wingate cycling and arm cranking, boxing bag punching, steep uphill treadmill running to exhaustion, and progressive treadmill running VO₂max test. Performance indices of different anaerobic tests were not closely correlated except for the duration of uphill running with body weight scaled (relative) peak and mean power produced during Wingate cycling test and absolute mean power of both Wingate tests. The number of punches landed on a bag per 30 s was associated only with relative power achieved during Wingate cycling test. HRpeak but not peak lactate response correlated strongly across exercise tasks. Finally, no correlation between the highly developed aerobic and anaerobic capacity, suggests a complex picture of the adaptation in elite amateur boxers. Full article

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12 pages, 839 KiB

Open AccessArticle

Using the Isometric Mid-Thigh Pull to Predict Three-Repetition Maximum Squat Values in Female Athletes

by Keely Pasfield, Nick Ball and Dale Wilson Chapman

Sports 2024, 12(9), 230; https://doi.org/10.3390/sports12090230 - 26 Aug 2024

Abstract

Prescribing correct training loads in strength- and power-based sports is essential to eliciting performance improvements for athletes. Concurrently, testing strength for the prescription of training loads should be accurate and safe with minimal disruption or fatigue inducement to the athlete. The purpose of [...] Read more.

Prescribing correct training loads in strength- and power-based sports is essential to eliciting performance improvements for athletes. Concurrently, testing strength for the prescription of training loads should be accurate and safe with minimal disruption or fatigue inducement to the athlete. The purpose of this study was to develop a prediction equation in female athletes for the three-repetition maximum (3RM) squat using the isometric mid-thigh pull and basic anthropometric assessments that could be practically applied to support training prescriptions. Female athletes (n = 34) were recruited from netball, volleyball, basketball, and soccer across a spectrum of competitive standards. Each athlete’s weight, standing height, seated height, arm span, and biacromial breadth were recorded, and then, on separate occasions separated by at least 48 h, each athlete completed a 3RM squat test and an isometric mid-thigh pull (IMTP) assessment. IMTP variables of peak force and time-dependent force at 50, 100, 150, 200, and 250 ms, as well as anthropometric measures, were used to develop a prediction equation. Squat strength was low-to-moderately correlated with peak force (r = 0.386); force at 100 ms (r = −0.128), 150 ms (r = −0.040), and 200 ms (r = −0.034); standing height (r = 0.294); and biacromial breadth (r = −0.410). Stepwise multiple regression significantly (p < 0.05) explained 26% of the 3RM squat strength variation using peak force and force at 100 ms, resulting in the following equation: Predicted 3RM squat (kg) = [6.102 + (Peak Force × 0.002) − (Force@100 ms × 0.001)]². The reported equation’s predictive accuracy was tested using the same testing protocols following 6–8 weeks of training in a sub-cohort of athletes (n = 14). The predicted and actual recorded 3RM values were not significantly (p = 0.313) different, supporting the use of the IMTP as a test that contributes informative values for use in a predictive equation for training prescription and thus reducing the testing and fatigue-inducing impost on female athletes. However, the 95% CI (−4.18–12.09) indicated predicted values could differ in excess of 10 kg. This difference could lead to an excessive load prescription for an athlete’s training program, indicating caution should be taken if using the described method to predict 3RM squat values for programming purposes. Full article

(This article belongs to the Special Issue Cutting-Edge Strategies in Resistance Training: Exploring Innovative Approaches)

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