Acute effect of one futsal training session in cardiac autonomic modulation of young players

Abstract

The objectives of this study was to evaluate the effect of a session of futsal training on cardiac autonomic modulation (pre vs post) in young athletes. Nine U-20 male futsal players from a professional club from Sao Paulo- Brazil (18.9&plusmn;0.9 years, weight 73.1&plusmn;6.0 kg and 179.0&plusmn;0.1cm) participated in this study. The training session was technical/tactical. The cardiac autonomic modulation was analyzed by heart rate variability (HRV) indices evaluate with continuous heart rate (Polar Team2 Pro) 15 minutes before and after a technical/tactical training session. Data were exported posteriorly to Kubios (2.0) program for the calculation of the indices: MRR, RMSSD, LF and HF. The paired t &ndash;Student test was applied to verify the pre vs post changes, besides the percentual variation (P<0.05). All the indices presented significant decrease after training session and the percentual variation were: 10.7, 26.9, 4.2 and 11.3% respectively for MRR, RMSSD, LFlog and HFlog indices. The percentual of variation showed significant correlation to the session TRIMP session (r=0,694). May be concluded that one training session was able to generate significant changes in cardiac autonomic modulation in young futsal players with variation ranging to 4.2% to 26.9%. These variations are correlated positively to the training load. Therefore, these findings may help the coaches in planning the training session, monitoring the training loads.