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All Journal Journal Coaching Education Sports Journal of Coaching and Sports Science
Green, Andrew
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Education Social Sciences

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 1 
Assessing Workload and Wellbeing Among Male School Athletes During a Two-Season Overlap Period Nkosi, Simphiwe; Green, Andrew
Journal Coaching Education Sports Vol. 4 No. 1 (2023)
Publisher : Program Studi Pendidikan Kepelatihan Olahraga Fakultas Ilmu Pendidikan Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/32k1hf43

Abstract

The study's goal was to evaluate and track the physical abilities and seasonal workloads of male multisport athletes who struggle with converging sport seasons. Due to the increased training load, these obstacles may have an effect on their general well-being. The researchers monitored the internal workloads of 15 male students who participated in a variety of sports disciplines. Over the course of a 10-week period, they assessed their general preparation and fitness using self-reported questionnaires. Through the course of the monitoring period, statistical analysis revealed substantial variations in workloads and the ACWR (acute to chronic workload ratio) (p = 0.002). Agility, vertical jump power, yo-yo intermittent recovery (Level 1), and predicted VO2max characteristics all showed significant changes (p 0.002). The participants' relatively high wellbeing and ACWR values, however, show that they did not endure enough stress from the workloads to cause physiological changes that would improve their performance. It's probable that the athletes' workloads were reasonable enough to lower the risk of injury while still enhancing performance.
Quantifying Coaching Considerations, Attitudes And Strategies To Player Substitutions In School Rugby Union Volkwyn, Cheryl-Ann; Lombard, Adrian; Green, Andrew
Journal Coaching Education Sports Vol. 4 No. 2 (2023)
Publisher : Program Studi Pendidikan Kepelatihan Olahraga Fakultas Ilmu Pendidikan Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/zpwaxk43

Abstract

Rugby is a high-intensity collision sport played by fifteen players in highly specialised playing positions. Due to these physical demands and to maintain a highly competitive level, a coach may substitute no more than eight players during the match. Player substitutions can affect the match’s outcome and knowing when to substitute players is largely determined by a coaches’ intuition. Therefore, the coaches’ involvements and decisions behind player changes must be assessed, as the effects of changing a player can directly affect the team’s performance. A six-sectioned questionnaire was developed to assess various issues surrounding player substitutions. Specifically, reasons for substituting players, considerations, informing players, match progression and status. Question responses followed a five-point Likert scale. Sixty-nine age-group level rugby coaches (experience 11.7 ± 9.0 years) completed the questionnaire. Common responses indicated that coaches used substitutions to increase their team’s chances of winning and to reduce player load. Additionally, the results indicate that coaches are likely to substitute players based on a predetermined strategy and to manage player loads. Coaches were likely to change players following a team scoring and as the game progressed. Additionally, substitutions were more likely when game importance increased. Finally, coaches frequently considered technical abilities of the players, timing and score of the game before changing players. The results provide a likely indication that coaches rely on their own previous playing experience regarding their decision-making approaches. Importantly, substitutions are planned and not reactive. Overall, coaches should provide sufficient notice and instruction to replacement players.
The Implementation and Effectiveness of Recovery Methods in a cohort of South African semi-professional Football Players during pre-season Training: A Case Study Blignaut, Tevin; Volkwyn, Cheryl-Ann; Lombard, Adrian; Green, Andrew
Journal Coaching Education Sports Vol. 5 No. 2 (2024)
Publisher : Program Studi Pendidikan Kepelatihan Olahraga Fakultas Ilmu Pendidikan Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/8e066w08

Abstract

This case study aimed to assess the efficacy of various training methods during the pre-season training of semi-professional football players. The demanding nature of football training places significant strain on players' psychophysiological practices, leading to fatigue. To mitigate fatigue and prevent overtraining, monitoring tools for training loads and recovery interventions are essential. A descriptive cohort case study design, using questionnaires for data collection, applied to 23 football players. The players were observed and evaluated to determine the most preferred recovery methods and monitor psychophysiological fatigue using the well-being questionnaire and Borg's category ratio scale (CR-10) during pre-season training. Recovery interventions tested included active recovery, cold water immersion, and stretching. Analysis revealed that players' well-being consistently fell below baseline levels (p<0.05) according to the well-being questionnaire. Additionally, the CR-10 indicated high perceived training loads among players, with no significant difference observed between the highest and lowest perceived loads (p > 0.05). The effectiveness of the recovery interventions appeared limited, as baseline wellness scores were not achieved. Nonetheless, the high acute training loads experienced during pre-season training may serve as a stimulus for adaptations. Semi-professional players may benefit from tailored combinations of recovery methods following training sessions or games.
Workload Monitoring of Throwing Sport Athletes Havinga, Janel; Green, Andrew; Swanepoel, Clinton
Journal of Coaching and Sports Science Vol 4, No 1 (2025): Journal of Coaching and Sports Science
Publisher : CV. FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/jcss.v4i1.460

Abstract

Background: Throwing events involve the full use of the kinetic chain. Therefore, monitoring training loads is crucial to optimizing athlete adaptation while minimizing the risk of fatigue and long-term injury.Aims: This study aimed to determine external load using work calculations and compare them to current session internal workload metrics such as heart rate and rate of perceived exertion. Furthermore, it aimed to monitor workload over a nine-week period.Methods: Internal training load was evaluated using modes of heart rate monitoring and rate of perceived exertion. External training load was calculated as the product of throw distances and implement weight. Acute to chronic workload ratio was calculated by dividing the acute workload by the chronic workloadResults: Twenty-five throwing athletes (age: 19 (3); height: 1.82 (0) meter; mass: 93 (19) kilogram) completed 11 (7) throws in a single field session during which throwing work was calculated (Throw distance: 40.87 (17.54) meter; session-rating of perceived exertion: 198 (269) arbitrary units; Total work: 8719.37 (13960.6) Joule; Average work: 726.61 (1877.92) Joule). Correlations (p less than 0.05) were found between session rating of perceived exertion and average work (r=0.433), session duration and total (r=0.433), and average workload (r=0.523). Negative correlations existed between average heart rate and total work (r=-0.435), average work (r=-0.442), and duration. (r=-0.483). Workloads and acute to chronic workload ratio differed over the 9 weeks (p=0.025).Conclusion: Relationships were reported between calculated average work, s-RPE, session duration, and average heart rate, indicating that monitoring the duration of training sessions will be of value while changing the implement weight in the sessions.
Co-Authors Blignaut, Tevin Havinga, Janel Lombard, Adrian Nkosi, Simphiwe Swanepoel, Clinton Volkwyn, Cheryl-Ann