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Sports, Volume 6, Issue 2

2018 June - 32 articles

Cover Story: Researchers examined the effects of sleep extension on sleep variables, immune function, stress hormone changes, and reaction time performance in professional rugby players during a pre-season training phase. Sleep extension resulted in improvements in sleep variables, cortisol levels, and mean reaction times. The researchers concluded that professional rugby players are at risk of poor sleep during pre-season training. Implementing a sleep extension program among professional athletes is recommended to improve sleep, with beneficial changes in stress hormone secretion and reaction time performance. View this paper.
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Articles (32)

  • Article
  • Open Access
17 Citations
5,523 Views
11 Pages

15 June 2018

The aim of this study was to determine the sensitivity of selected subjective and objective monitoring assessments in detecting changes in group and individual responses to low and high load bouts of high intensity intermittent exercise. In a counter...

  • Article
  • Open Access
8 Citations
7,260 Views
10 Pages

Effects of Reflection to Improve Goal-Directed Self-Talk on Endurance Performance

  • Alexander T. Latinjak,
  • Bernat De las Heras,
  • Arnau Sacot,
  • David Fernandez,
  • Daniel Robinson and
  • Andrew M. Lane

13 June 2018

We investigated the effects of an intervention that encouraged reflection on organic self-talk used during endurance performance. Using an experimental design, we compared the effects of enhancing metacognitive skills by (a) planning and (b) reviewin...

  • Article
  • Open Access
6 Citations
5,947 Views
11 Pages

A Comparison of Aerobic Fitness Testing on a Swim Bench and Treadmill in a Recreational Surfing Cohort: A Pilot Study

  • Hamzeh Khundaqji,
  • Enad Samain,
  • Mike Climstein,
  • Ben Schram,
  • Wayne Hing and
  • James Furness

11 June 2018

The intermittent manner of surfing accentuates the importance of both the aerobic and anaerobic energy systems. Currently, the optimal method of assessing surfing-specific aerobic fitness is using a swim bench (SWB) ergometer; however, their limited...

  • Article
  • Open Access
8 Citations
7,215 Views
10 Pages

The Assessment of Isometric, Dynamic, and Sports-Specific Upper-Body Strength in Male and Female Competitive Surfers

  • Joanna Parsonage,
  • Josh Secomb,
  • Rebecca Dowse,
  • Brendon Ferrier,
  • Jeremy Sheppard and
  • Sophia Nimphius

5 June 2018

The primary purpose of this study was to investigate gender differences in the dynamic strength index (DSI): an assessment of upper-body dynamic strength relative to maximal isometric strength. The secondary purpose was to investigate gender differen...

  • Article
  • Open Access
10 Citations
7,216 Views
9 Pages

Profiling Shoulder Strength in Competitive Surfers

  • James Furness,
  • Ben Schram,
  • Tim Cottman-Fields,
  • Brendan Solia and
  • Josh Secomb

30 May 2018

The shoulder region has the highest incidence of acute injuries in the sport of surfing. Little is known about the strength profile at the shoulder in a surfing cohort. The primary aim of this study was to establish the reliability of a rotator cuff...

  • Article
  • Open Access
30 Citations
5,663 Views
9 Pages

29 May 2018

This study aimed to examine the scoring strategies differentiating between winning and losing teams during FIBA EuroBasket Women 2017 in relation to different game scores. Data were gathered for all games of FIBA EuroBasket Women 2017 from the offici...

  • Article
  • Open Access
26 Citations
8,689 Views
10 Pages

Knee Angle and Stride Length in Association with Ball Speed in Youth Baseball Pitchers

  • Bart Van Trigt,
  • Wouter Schallig,
  • Erik Van der Graaff,
  • Marco J. M. Hoozemans and
  • Dirkjan Veeger

29 May 2018

The purpose of this study was to determine whether stride length and knee angle of the leading leg at foot contact, at the instant of maximal external rotation of the shoulder, and at ball release are associated with ball speed in elite youth basebal...

  • Article
  • Open Access
18 Citations
8,085 Views
9 Pages

Perceptions and Determinants of Eating for Health and Performance in High-Level Male Adolescent Rugby Union Players

  • Emily G. Stokes,
  • Roger Hughes,
  • David M. Shaw,
  • Helen T. O’Connor and
  • Kathryn L. Beck

28 May 2018

Sports nutrition recommendations provide guidance on dietary strategies to optimise sports performance. However, research indicates that young athletes often find it difficult to follow these guidelines in practice. Limited research exists on the det...

  • Article
  • Open Access
12 Citations
6,961 Views
10 Pages

25 May 2018

Flourishing is a construct used to understand human growth. Exercise psychology research is scant concerning this valuable construct. Hence, our purpose was to examine different levels of flourishing and related constructs within a large group of sel...

  • Article
  • Open Access
26 Citations
10,074 Views
12 Pages

Identifying a Test to Monitor Weightlifting Performance in Competitive Male and Female Weightlifters

  • S. Kyle Travis,
  • Jacob R. Goodin,
  • George K. Beckham and
  • Caleb D. Bazyler

23 May 2018

Monitoring tests are commonly used to assess weightlifter’s preparedness for competition. Although various monitoring tests have been used, it is not clear which test is the strongest indicator of weightlifting performance. Therefore, the purpo...

  • Article
  • Open Access
33 Citations
7,052 Views
10 Pages

Anthropometric and Physical Performance of Youth Handball Players: The Role of the Relative Age

  • Alba Camacho-Cardenosa,
  • Marta Camacho-Cardenosa,
  • Adrián González-Custodio,
  • Ismael Martínez-Guardado,
  • Rafael Timón,
  • Guillermo Olcina and
  • Javier Brazo-Sayavera

23 May 2018

Background: The relative age effect is essential throughout all of the talent selection processes in sports, especially during adolescence, which leaves fewer athletes within each cohort that are born late in the selected year. The aim of the present...

  • Feature Paper
  • Article
  • Open Access
26 Citations
7,675 Views
9 Pages

The Validity of External:Internal Training Load Ratios in Rested and Fatigued Soccer Players

  • Ibrahim Akubat,
  • Steve Barrett,
  • Manuel Lapuente Sagarra and
  • Grant Abt

19 May 2018

Purpose: To examine the relationship of external:internal training load ratios with fitness and assess the impact of fatigue. Method: Ten soccer players performed a lactate threshold test followed by two soccer simulations (BEAST90mod) 48 h apart. Re...

  • Article
  • Open Access
55 Citations
11,908 Views
6 Pages

19 May 2018

(1) Aim: The study aimed at assessing simple-reaction, recognition and cognitive-reaction times to visual stimuli among student athletes: boxing, gymnastics, taekwondo, judo, karate and wrestling, using computer games tests. (2) Methods: Our study in...

  • Feature Paper
  • Article
  • Open Access
22 Citations
10,495 Views
10 Pages

Non-Linear Resistance Training Program Induced Power and Strength but Not Linear Sprint Velocity and Agility Gains in Young Soccer Players

  • Matheus Barbalho,
  • Paulo Gentil,
  • Rodolfo Raiol,
  • Fabrício Boscolo Del Vecchio,
  • Rodrigo Ramirez-Campillo and
  • Victor Silveira Coswig

14 May 2018

Background: The present study evaluated the effects of resistance training (RT) following a non-linear periodization model in the physical fitness of young soccer athletes. Methods: Young soccer players (n = 23) were allocated into two groups: an RT...

  • Article
  • Open Access
11 Citations
7,968 Views
17 Pages

10 May 2018

The purpose of this study was to examine the relationship between participation in youth sport and adolescent–parent attachment. A mixed-method explanatory sequential study design was applied. In the first phase, 648 adolescent athletes and non...

  • Article
  • Open Access
56 Citations
19,136 Views
10 Pages

The Effects of Sleep Extension on Sleep, Performance, Immunity and Physical Stress in Rugby Players

  • Richard Swinbourne,
  • Joanna Miller,
  • Daniel Smart,
  • Deborah K. Dulson and
  • Nicholas Gill

10 May 2018

(1) Background: The purpose of the present study was to examine the efficacy of sleep extension in professional rugby players. The aims were to: (i) characterise sleep quantity in elite rugby players and determine changes in immune function and stres...

  • Case Report
  • Open Access
16 Citations
9,742 Views
6 Pages

Exertional Rhabdomyolysis after an Extreme Conditioning Competition: A Case Report

  • Ramires Alsamir Tibana,
  • Nuno Manuel Frade de Sousa,
  • Gabriel Veloso Cunha,
  • Jonato Prestes,
  • James W. Navalta and
  • Fabricio Azevedo Voltarelli

26 April 2018

This case report describes an instance of exercise-induced rhabdomyolysis caused by an extreme conditioning program (ECP) competition. A 35-year-old female presented with abdominal pain and soreness, which began one day after she completed two days o...

  • Article
  • Open Access
11 Citations
6,041 Views
11 Pages

Directional Change Mediates the Physiological Response to High-Intensity Shuttle Running in Professional Soccer Players

  • Remy Tang,
  • Conall Murtagh,
  • Giles Warrington,
  • Tim Cable,
  • Oliver Morgan,
  • Andrew O’Boyle,
  • Darren Burgess,
  • Ryland Morgans and
  • Barry Drust

24 April 2018

The purpose of this study was to investigate the influence that different frequencies of deceleration and acceleration actions had on the physiological demands in professional soccer players. Thirteen players were monitored via microelectromechanical...

  • Article
  • Open Access
28 Citations
6,479 Views
12 Pages

23 April 2018

The relative age effect (RAE) has been extensively debated and researched in both popular media and academic discourse. This study examined RAE in Swedish tennis players born in 1998–2001. The study was conducted in 2015–2016 and includes...

  • Article
  • Open Access
4 Citations
5,081 Views
11 Pages

Neuromuscular Adaptations Following Training and Protein Supplementation in a Group of Trained Weightlifters

  • Christopher Taber,
  • Kevin Carroll,
  • Brad DeWeese,
  • Kimitake Sato,
  • Charles Stuart,
  • Mary Howell,
  • Kenton Hall,
  • Caleb Bazyler and
  • Michael Stone

19 April 2018

The purpose of this study was to examine the effects of a recovery supplement compared with a placebo on muscle morphology in trained weightlifters. Vastus lateralis and muscle fiber cross sectional area of type I and type II fibers were compared bet...

  • Feature Paper
  • Article
  • Open Access
25 Citations
9,115 Views
13 Pages

18 April 2018

A countermovement jump (CMJ) represents one of the most frequently used performance tests for monitoring neuromuscular function in athletes. An often-overlooked feature that may provide some useful diagnostic information is the actual shape of the fo...

  • Article
  • Open Access
6 Citations
4,847 Views
6 Pages

Analysis of the Relationship between Elite Wrestlers’ Leg Strength and Balance Performance, and Injury History

  • Sezen Çimen Polat,
  • Celal Bulgay,
  • İmdat Yarım,
  • Halil İbrahim Cicioğlu and
  • Ebru Çetin

17 April 2018

The purpose of this study is to examine the correlation between leg power and balance performance in elite wrestlers and injury history. In the research group, there are 18 elite freestyle male wrestlers at the ages of 24.27 ± 3.18 years, with...

  • Article
  • Open Access
20 Citations
6,025 Views
11 Pages

A Literature Review Informing an Operational Guideline for Inertial Sensor Propulsion Measurement in Wheelchair Court Sports

  • Jonathan B. Shepherd,
  • Daniel A. James,
  • Hugo G. Espinosa,
  • David V. Thiel and
  • David D. Rowlands

13 April 2018

With the increasing rise of professionalism in sport, teams and coaches are looking to technology to monitor performance in both games and training to find a competitive advantage. Wheelchair court sports (wheelchair rugby, wheelchair tennis, and whe...

  • Article
  • Open Access
7 Citations
6,319 Views
11 Pages

The Influence of Fatigued Core Muscles on Head Acceleration during Headers in Soccer

  • Stephan Becker,
  • Michael Fröhlich,
  • Jens Kelm and
  • Oliver Ludwig

11 April 2018

The core muscles play a central role in stabilizing the head during headers in soccer. The objective of this study was to examine the influence of a fatigued core musculature on the acceleration of the head during jump headers and run headers. Accele...

  • Article
  • Open Access
16 Citations
6,049 Views
9 Pages

The Role of Visual Feedback on Power Output During Intermittent Wingate Testing in Ice Hockey Players

  • Petr Stastny,
  • James J. Tufano,
  • Jan Kregl,
  • Miroslav Petr,
  • Dusan Blazek,
  • Michal Steffl,
  • Robert Roczniok,
  • Milos Fiala,
  • Artur Golas and
  • Piotr Zmijewski

9 April 2018

Background: Visual feedback may help elicit peak performance during different types of strength and power testing, but its effect during the anaerobic Wingate test is unexplored. Therefore, the purpose of this study was to determine the effect of vis...

  • Article
  • Open Access
16 Citations
7,489 Views
10 Pages

The Test-Retest Reliability of New Generation Power Indices of Wingate All-Out Test

  • Ozgur Ozkaya,
  • Gorkem Aybars Balci,
  • Hakan As and
  • Emre Vardarli

7 April 2018

Although reliability correlations of traditional power indices of the Wingate test have been well documented, no study has analyzed new generation power indices based on milliseconds obtained from a Peak Bike. The purpose of this study was to investi...

  • Article
  • Open Access
60 Citations
9,025 Views
12 Pages

4 April 2018

This study investigated relationships that linear speed and lower-body power have on change-of-direction (COD) speed in collegiate women soccer players. Data from two Division I (n = 39) and one Division II (n = 18) schools were analyzed. Subjects we...

  • Article
  • Open Access
22 Citations
5,869 Views
9 Pages

31 March 2018

The relative age effect (RAE) in the selection of young soccer players is a well-known phenomenon. The purpose of this study was to examine the relative age effect existing despite strategies that have been implemented to avoid its presence in the se...

  • Case Report
  • Open Access
16 Citations
5,086 Views
5 Pages

Relationships between Sprint Ability and Endurance Capacity in Soccer Referees

  • Mario Sánchez-García,
  • Javier Sánchez-Sánchez,
  • Alejandro Rodríguez-Fernández,
  • David Solano and
  • Daniel Castillo

30 March 2018

The aim of this study was to analyze the association between sprint ability and endurance capacity in soccer referees. Twenty-three Spanish officials participated in this study. Each referee undertook, in this order, a 40 m linear straight sprinting...

  • Article
  • Open Access
30 Citations
6,229 Views
8 Pages

A New Approach to EMG Analysis of Closed-Circuit Movements Such as the Flat Bench Press

  • Artur Golas,
  • Adam Maszczyk,
  • Petr Stastny,
  • Michal Wilk,
  • Krzysztof Ficek,
  • Robert George Lockie and
  • Adam Zajac

28 March 2018

Background: The bench press (BP) is a complex exercise demanding high neuromuscular activity. Therefore, the main objective of this study was to identify the patterns of muscular activity of the prime movers on both sides of an elite powerlifter. Met...

  • Article
  • Open Access
55 Citations
9,327 Views
10 Pages

Are Changes in Physical Work Capacity Induced by High-Intensity Functional Training Related to Changes in Associated Physiologic Measures?

  • Derek A. Crawford,
  • Nicholas B. Drake,
  • Michael J. Carper,
  • Justin DeBlauw and
  • Katie M. Heinrich

27 March 2018

High-Intensity Functional Training (HIFT) is a novel exercise intervention that may test body systems in a balanced and integrated fashion by challenging individuals’ abilities to complete mechanical work. However, research has not previously determi...

  • Article
  • Open Access
5 Citations
5,396 Views
8 Pages

The Effect of Environmental Conditions on the Physiological Response during a Stand-Up Paddle Surfing Session

  • Yair Suari,
  • Ben Schram,
  • Adva Ashkenazi,
  • Hadas Gann-Perkal,
  • Lev Berger,
  • Meshi Reznikov,
  • Shmuel Shomrat and
  • Einat Kodesh

22 March 2018

Stand Up Paddleboard (SUP) surfing entails riding breaking waves and maneuvering the board on the wave face in a similar manner to traditional surfing. Despite some scientific investigations on SUP, little is known about SUP surfing. The aim of this...

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Sports - ISSN 2075-4663