Andrew A Flatt1, Daniel Howells2, Sean Williams3. 1. Georgia Southern University, Department of Health Sciences and Kinesiology, Biodynamics and Human Performance Center, USA. Electronic address: aflatt@georgiasouthern.edu. 2. Rugby Football Union, Rugby House, United Kingdom. 3. Department for Health, University of Bath, United Kingdom.
Abstract
OBJECTIVES: The purpose of this study was to evaluate heart rate variability and athlete self-report measures of recovery status (ASRM) in response to consecutive domestic and international tournaments among an elite rugby sevens team. DESIGN: Retrospective. METHODS: Olympic-level rugby sevens players (n=10) recorded post-waking natural logarithm of the root mean square of successive differences (LnRMSSD) and ASRM (sleep quality, energy, soreness, recovery and mood) throughout a 1-week baseline period and daily thereafter throughout a domestic and subsequent international tournament, separated by five days. Linear mixed models and Hedge's effect sizes ±95% confidence interval (ES±95% CI) were used to evaluate variation in LnRMSSD and ASRM relative to baseline. RESULTS: Decrements in various ASRM were observed in response to both tournaments (ES=-0.80±0.91 to -1.73±1.03, p<0.05) and international travel (ES=-1.03±0.93 to -1.70±1.02, p<0.05) whereas decrements in LnRMSSD were only observed in response to the international tournament (ES=-0.89±0.92 to -1.21±0.96, p=0.02-0.07). No clear differences in internal or external match-load parameters were observed between tournaments (ES=-0.35±0.88 to 0.13±0.88, p>0.05). CONCLUSIONS: Greater decrements in cardiac-autonomic activity were observed in response to an international tournament relative to a domestic tournament, despite no difference in match-physical demands. Thus, factors separate from competition alone may impact players' cardiac-autonomic response to an international tournament.
OBJECTIVES: The purpose of this study was to evaluate heart rate variability and athlete self-report measures of recovery status (ASRM) in response to consecutive domestic and international tournaments among an elite rugby sevens team. DESIGN: Retrospective. METHODS: Olympic-level rugby sevens players (n=10) recorded post-waking natural logarithm of the root mean square of successive differences (LnRMSSD) and ASRM (sleep quality, energy, soreness, recovery and mood) throughout a 1-week baseline period and daily thereafter throughout a domestic and subsequent international tournament, separated by five days. Linear mixed models and Hedge's effect sizes ±95% confidence interval (ES±95% CI) were used to evaluate variation in LnRMSSD and ASRM relative to baseline. RESULTS: Decrements in various ASRM were observed in response to both tournaments (ES=-0.80±0.91 to -1.73±1.03, p<0.05) and international travel (ES=-1.03±0.93 to -1.70±1.02, p<0.05) whereas decrements in LnRMSSD were only observed in response to the international tournament (ES=-0.89±0.92 to -1.21±0.96, p=0.02-0.07). No clear differences in internal or external match-load parameters were observed between tournaments (ES=-0.35±0.88 to 0.13±0.88, p>0.05). CONCLUSIONS: Greater decrements in cardiac-autonomic activity were observed in response to an international tournament relative to a domestic tournament, despite no difference in match-physical demands. Thus, factors separate from competition alone may impact players' cardiac-autonomic response to an international tournament.
Authors: Chin-Hwai Hung; Filipe Manuel Clemente; Pedro Bezerra; Yi-Wen Chiu; Chia-Hua Chien; Zachary Crowley-McHattan; Yung-Sheng Chen Journal: Int J Environ Res Public Health Date: 2020-06-07 Impact factor: 3.390
Authors: Julio Calleja-Gonzalez; Diego Marques-Jimenez; Margaret Jones; Thomas Huyghe; Fernando Navarro; Anne Delextrat; Igor Jukic; Sergej M Ostojic; Jaime E Sampaio; Xavi Schelling; Pedro E Alcaraz; Fernando Sanchez-Bañuelos; Xavier Leibar; Juan Mielgo-Ayuso; Nicolas Terrados Journal: Front Psychol Date: 2020-02-21