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30 Results Found

  • Feature Paper
  • Article
  • Open Access
26 Citations
7,665 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...

  • Systematic Review
  • Open Access
6 Citations
7,279 Views
15 Pages

Training Impulse and Its Impact on Load Management in Collegiate and Professional Soccer Players

  • Clinton Gardner,
  • James W. Navalta,
  • Bryson Carrier,
  • Charli Aguilar and
  • Jorge Perdomo Rodriguez

Methods: Training impulse (TRIMP) is obtained through wearable technology and plays a direct role on the load management of soccer players. It is important to understand TRIMP to best prepare athletes for competition. A systematic search for articles...

  • Article
  • Open Access
930 Views
16 Pages

Training Impulse as a Tool for Linking Exercise Dose to Health Outcomes in Adolescents: Evidence from Interval-Based Interventions

  • Jarosław Domaradzki,
  • Dawid Koźlenia,
  • Marek Popowczak,
  • Katarzyna Kochan-Jacheć,
  • Paweł Szkudlarek and
  • Eugenia Murawska-Ciałowicz

9 October 2025

Background: The training impulse (TRIMP) method integrates exercise duration and intensity, yet its application in school-based health programs is limited. This study examined dose–response relationships between TRIMP and changes in body fat pe...

  • Article
  • Open Access
4 Citations
9,572 Views
14 Pages

Power Profile Index: An Adjustable Metric for Load Monitoring in Road Cycling

  • Manuel Mateo-March,
  • José Ramón Lillo-Beviá,
  • Gabriel della Mattia,
  • Xabier Muriel,
  • David Barranco-Gil,
  • Mikel Zabala,
  • Javier Courel-Ibáñez and
  • José Antonio Salas-Montoro

31 October 2022

Workload is calculated from exercise volume and intensity. In endurance sports, intensity has been measured using heart rate or RPE, giving rise to load indexes such as sRPE or TRIMP. In cycling, the advent of power meters led to new indexes, such as...

  • Article
  • Open Access
40 Citations
6,511 Views
7 Pages

19 March 2019

The aim of this study was to investigate differences in the physical (locomotor activities) and physiological (Banister’s training impulse) in-season training load between starters and substitutes in a well-trained junior soccer team. Physical...

  • Article
  • Open Access
2 Citations
3,248 Views
18 Pages

13 February 2024

Terminal repeat retrotransposons in miniature (TRIMs) are short non-autonomous long terminal repeat (LTR) retrotransposons found from various eukaryotes. Cassandra is a unique TRIM lineage which contains a 5S rRNA-derived sequence in its LTRs. Here,...

  • Article
  • Open Access
10 Citations
4,146 Views
11 Pages

The Relationship between Training Load Measures and Next-Day Well-Being in Rugby Union Players

  • Richard Taylor,
  • Tony D. Myers,
  • Dajo Sanders,
  • Matthew Ellis and
  • Ibrahim Akubat

25 June 2021

The aim of this study is to identify the relationship between different internal and external load measures and next day subjective wellbeing. With institutional ethics approval, ten academy rugby union players (Five forwards, and five backs) with a...

  • Article
  • Open Access
1,651 Views
16 Pages

Relationship Between Internal and External Load in Under-16 Soccer Players: Heart Rate, Rating of Perceived Exertion, and GPS-Derived Variables

  • Krisztián Havanecz,
  • Sándor Sáfár,
  • Csaba Bartha,
  • Bence Kopper,
  • Tamás Horváth,
  • Péter János Tóth,
  • Gabriella P. Szabó,
  • Zoltán Szalánczi and
  • Gábor Géczi

3 November 2025

Heart rate (HR) monitoring is a practical method for assessing internal load (IL). However, it remains unclear for which age group HR would be an appropriate predictor of IL considering the relationship with external load (EL). Thus, this study aims...

  • Article
  • Open Access
8 Citations
4,383 Views
10 Pages

The Impact of Fluid Loss and Carbohydrate Consumption during Exercise, on Young Cyclists’ Fatigue Perception in Relation to Training Load Level

  • Leonardo Cesanelli,
  • Berta Ylaitė,
  • Giuseppe Messina,
  • Daniele Zangla,
  • Stefania Cataldi,
  • Antonio Palma and
  • Angelo Iovane

High-level young athletes need to face a wide spectrum of stressors on their journey to élite categories. The aims of the present study are (i) to evaluate session rate of perceived exertion (sRPE) at different training impulse (TRIMP) categories and...

  • Article
  • Open Access
3 Citations
1,903 Views
14 Pages

Not All Forms of Exercise Lead to Positive Affect: A Comparative Monitoring Between an Imposed and Self-Adjusted Prescription in Recreational RunnersA Cross-Sectional Randomized Controlled Study

  • Izabela Linhares Campos Monturil,
  • Marcelo Magalhães Sales,
  • Pedro Augusto Inacio,
  • Vicente Aprigliano,
  • Patricia Sardinha Leonardo,
  • Iransé Oliveira-Silva,
  • Raphael Martins Cunha,
  • Gaspar R. Chiappa,
  • James Oluwagbamigbe Fajemiroye and
  • Alberto Souza Sá Filho
  • + 2 authors

3 February 2025

Objective: To evaluate the affective responses to running with imposed velocity or self-selected time trials in runners, as well as the effects on volume load (VL) and training impulse (TRIMP). Anxiety was also determined. We established the level of...

  • Article
  • Open Access
5 Citations
2,584 Views
18 Pages

27 December 2023

The purpose of this study was to investigate the internal load of amateur soccer players during official championship matches when playing with the 1-4-3-3 formation. Additionally, the possible relationship between internal load variables and externa...

  • Article
  • Open Access
11 Citations
4,652 Views
8 Pages

15 December 2020

The aim of this study is to explore the relationships between internal and external load measures in American football. Thirty football players wore a portable integrated monitor unit for 10 weeks during the fall football season. Relationships betwee...

  • Article
  • Open Access
47 Views
11 Pages

Effects of a Carbohydrate + Caffeine Beverage on Game Performance, Blood Glucose and Perceived Effort in Collegiate Women Soccer Players

  • Andrew R. Jagim,
  • Abby Ambrosius,
  • Makenna Carpenter,
  • Joesi Krieger,
  • Lochlan Charley,
  • Jennifer B. Fields,
  • Margaret T. Jones and
  • Chad Kerksick

3 February 2026

Carbohydrate availability and caffeine ingestion have been shown to elicit improvements in performance independently of one another. The purpose of the study was to examine the effect of a carbohydrate + caffeine beverage on performance and perceived...

  • Article
  • Open Access
28 Citations
11,270 Views
11 Pages

16 December 2021

Heart rate (HR) and heart rate variability (HRV) based physiological metrics such as Excess Post-exercise Oxygen Consumption (EPOC), Energy Expenditure (EE), and Training Impulse (TRIMP) are widely utilized in coaching to monitor and optimize an athl...

  • Article
  • Open Access
2 Citations
3,399 Views
11 Pages

A Fitness-Fatigue Model of Performance in Peripheral Artery Disease: Predicted and Measured Effects of a Pain-Free Exercise Program

  • Nicola Lamberti,
  • Giovanni Piva,
  • Federico Businaro,
  • Lorenzo Caruso,
  • Anna Crepaldi,
  • Pablo Jesùs Lòpez-Soto and
  • Fabio Manfredini

4 March 2022

Banister impulse-response (IR) model estimates the performance in response to the training impulses (TRIMPs). In 100 patients with peripheral artery disease (PAD), we tested by an IR model the predictability of the effects of a 6-month structured hom...

  • Article
  • Open Access
1,229 Views
13 Pages

Background/Objectives: The aim of this study was to investigate the acute effect of isometric and plyometric combined activation prior to the endurance performance assessed with the 30-15 Intermittent Fitness Test (30-15 IFT) and cardiovascular param...

  • Article
  • Open Access
72 Citations
13,825 Views
8 Pages

Validity of Session Rating Perceived Exertion Method for Quantifying Internal Training Load during High-Intensity Functional Training

  • Ramires Alsamir Tibana,
  • Nuno Manuel Frade De Sousa,
  • Gabriel Veloso Cunha,
  • Jonato Prestes,
  • Carlos Fett,
  • Tim J. Gabbett and
  • Fabrício Azevedo Voltarelli

23 July 2018

The aim of this study was to validate the quantification of internal training load (session rating perceived exertion, sRPE) and the effect of recall timing of sRPE during high-intensity functional training (HIFT) sessions. Thirteen male HIFT practit...

  • Article
  • Open Access
10 Citations
5,539 Views
17 Pages

Physiological Demands and Muscle Activity of Jockeys in Trial and Race Riding

  • Kylie Legg,
  • Darryl Cochrane,
  • Erica Gee,
  • Paul Macdermid and
  • Chris Rogers

8 September 2022

Physiological parameters and muscle activity of jockeys may affect their fall and injury risk, performance, and career longevity, as well as the performance and welfare of the horses they ride. Therefore, this study aimed to quantify the physiologica...

  • Article
  • Open Access
7 Citations
3,245 Views
9 Pages

Associations between Well-Being State and Match External and Internal Load in Amateur Referees

  • Eñaut Ozaeta,
  • Javier Yanci,
  • Carlo Castagna,
  • Estibaliz Romaratezabala and
  • Daniel Castillo

The main aim of this paper was to examine the association between prematch well-being status with match internal and external load in field (FR) and assistant (AR) soccer referees. Twenty-three FR and 46 AR participated in this study. The well-being...

  • Article
  • Open Access
33 Citations
11,745 Views
12 Pages

Training Characteristics and Power Profile of Professional U23 Cyclists throughout a Competitive Season

  • Peter Leo,
  • James Spragg,
  • Dieter Simon,
  • Justin S. Lawley and
  • Iñigo Mujika

17 December 2020

Background: The purpose of this study was to investigate differences in the power profile derived from training and racing, the training characteristics across a competitive season and the relationships between training and power profile in U23 profe...

  • Article
  • Open Access
11 Citations
5,250 Views
12 Pages

Training Load Measures and Biomarker Responses during a 7-Day Training Camp in Young Cyclists—A Pilot Study

  • Yvonne Wahl,
  • Silvia Achtzehn,
  • Daniela Schäfer Olstad,
  • Joachim Mester and
  • Patrick Wahl

29 June 2021

Background and Objectives: During intense training periods, there is a high need to monitor the external and especially the internal training load in order to fine-tune the training process and to avoid overreaching or overtraining. However, data on...

  • Article
  • Open Access
3 Citations
3,536 Views
17 Pages

Immune Response of Elite Enduro Racers to Laboratory and Racing Environments: The Influence of Training Impulse and Vibration

  • Lewis Kirkwood,
  • Lesley Ingram-Sills,
  • Mark Dunlop Taylor,
  • Eva Malone and
  • Geraint Florida-James

Introduction: Understanding the sport-specific immune response elicited during both training and competition is imperative to maximise athlete health and performance. Despite a growing population of professional enduro mountain bike athletes, little...

  • Systematic Review
  • Open Access
17 Citations
4,358 Views
21 Pages

Monitoring Internal Load in Women’s Basketball via Subjective and Device-Based Methods: A Systematic Review

  • Javier Espasa-Labrador,
  • Azahara Fort-Vanmeerhaeghe,
  • Alicia M. Montalvo,
  • Marta Carrasco-Marginet,
  • Alfredo Irurtia and
  • Julio Calleja-González

2 May 2023

The monitoring of internal load in basketball can be used to understand the effects and potential physiological adaptations caused by external load. The main aim of this systematic review was to identify the methods and variables used to quantify int...

  • Review
  • Open Access
24 Citations
11,758 Views
21 Pages

Participation in youth sports is ever-increasing, along with training and competition demands placed upon youth athletes. Young athletes may experience high training loads due to playing several sports, as well as participating in school physical edu...

  • Article
  • Open Access
14 Citations
5,158 Views
13 Pages

Training Load in Different Age Category Soccer Players and Relationship to Different Pitch Size Small-Sided Games

  • Fernando J. Santos,
  • Teresa P. Figueiredo,
  • Dalton M. Pessôa Filho,
  • Carlos E. L. Verardi,
  • Anderson G. Macedo,
  • Cátia C. Ferreira and
  • Mário C. Espada

31 July 2021

This study sought to evaluate the training load in different age category soccer players associated with distinct pitch size small-sided games (SSGs). Twenty-four soccer players (eight in each age category: U-12, U-15, and U-23) performed three conse...

  • Systematic Review
  • Open Access
24 Citations
5,799 Views
23 Pages

Relationships between External, Wearable Sensor-Based, and Internal Parameters: A Systematic Review

  • Janina Helwig,
  • Janik Diels,
  • Mareike Röll,
  • Hubert Mahler,
  • Albert Gollhofer,
  • Kai Roecker and
  • Steffen Willwacher

11 January 2023

Micro electro-mechanical systems (MEMS) are used to record training and match play of intermittent team sport athletes. Paired with estimates of internal responses or adaptations to exercise, practitioners gain insight into players’ dose–...

  • Article
  • Open Access
3 Citations
12,183 Views
33 Pages

2 January 2025

Power transformers are fundamental components in electrical grids, requiring robust insulation to operate reliably under various abnormal conditions, including overvoltages caused by lightning or switching. As defined by existing standards, the Basic...

  • Article
  • Open Access
20 Citations
6,669 Views
13 Pages

Session Rating of Perceived Exertion (sRPE) Load and Training Impulse Are Strongly Correlated to GPS-Derived Measures of External Load in NCAA Division I Women’s Soccer Athletes

  • Andrew T. Askow,
  • Alexa L. Lobato,
  • Daniel J. Arndts,
  • Will Jennings,
  • Andreas Kreutzer,
  • Jacob L. Erickson,
  • Phil E. Esposito,
  • Jonathan M. Oliver,
  • Carl Foster and
  • Andrew R. Jagim

Purpose: The purpose of this study was to determine whether session rating of perceived exertion-derived training load (sRPE-TL) correlates with GPS-derived measures of external load in National Collegiate Athletics Association (NCAA) Division I fema...

  • Review
  • Open Access
4 Citations
3,576 Views
48 Pages

Shaping Training Load, Technical–Tactical Behaviour, and Well-Being in Football: A Systematic Review

  • Pedro Afonso,
  • Pedro Forte,
  • Luís Branquinho,
  • Ricardo Ferraz,
  • Nuno Domingos Garrido and
  • José Eduardo Teixeira

25 July 2025

Football performance results from the dynamic interaction between physical, tactical, technical, and psychological dimensions—each of which also influences player well-being, recovery, and readiness. However, integrated monitoring approaches re...

  • Article
  • Open Access
1 Citations
3,884 Views
15 Pages

Analyzing Key Factors on Training Days within a Standard Microcycle for Young Sub-Elite Football Players: A Principal Component Approach

  • José Eduardo Teixeira,
  • Luís Branquinho,
  • Ricardo Ferraz,
  • Ryland Morgans,
  • Samuel Encarnação,
  • Joana Ribeiro,
  • Pedro Afonso,
  • Nemat Ruzmetov,
  • Tiago M. Barbosa and
  • Pedro Forte
  • + 1 author

16 July 2024

Utilizing techniques for reducing multivariate data is essential for comprehensively understanding the variations and relationships within both biomechanical and physiological datasets in the context of youth football training. Therefore, the objecti...