Key result
Soccer training produces distinct individual variations in resting HRV indices reflecting differing autonomic responses.
Why the study?
The study aimed to monitor changes in HRV indices of two soccer players from the same team during a training period.
Case Report (n=2)
No
Heart rate variability indices may be useful for monitoring the individualized effects of soccer training and competitive loads on parasympathetic modulation, stress, and recovery.
Answers are grounded in this paper and cite their sources.
May support individualized HRV monitoring in soccer; hypothesis-generating and should not yet change practice.
The aim of this study was to monitor changes in HRV indices of two players of the same soccer team during a training period. Training loads of each session of the 3-week period were monitored by means of the training impulses (TRIMP) method. Resting RR intervals at supine position were obtained at five moments over 3-week period. The HRV indices (SD1, SDNN, RMSSD and HF) followed similar inter-subject patterns. They had similar values at M1 and, from M2, these variables were greater in athlete 1 than in athlete 2. At M2 and M4, athlete 1 presented a parasympathetic rebound, especially in SD1, SDNN and RMSSD, whereas athlete 2 presented reduction of these indices. We can advance that indices of HRV can be useful to monitor the effects of soccer training/competitive loads on parasympathetic modulation, being sensitive to both individual characteristics and to periods of stress and recovery.
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Filho et al. (2013) conducted a case report in Soccer players undergoing a 3-week training period (n=2). Soccer training loads monitored via training impulses (TRIMP) was evaluated on Changes in resting heart rate variability (HRV) indices (SD1, SDNN, RMSSD, and HF). Soccer training monitored over 3 weeks in 2 players produced individual variations in resting HRV indices (SD1, SDNN, RMSSD, HF), reflecting differing parasympathetic modulation.
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