TY  - JOUR
PY  - 2021//
TI  - Performing more than 20 purposeful gameplay headers in a soccer season may alter autonomic function in female youth soccer players
JO  - Research in sports medicine
A1  - Bonn, Marquise M.
A1  - Harriss, Alexandra B.
A1  - Thompson, James W. G.
A1  - Dickey, James P.
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - This study evaluated the effects of cumulative purposeful soccer heading on autonomic nervous system function in 22 female youth soccer players (13.3 ± 0.9 years). A 10 minute electrocardiogram recording was collected at baseline and following the 20 game season (post-season) to calculate measures of heart rate variability (HRV), including standard deviation of the normal-normal intervals, total power, high frequency (HF), low frequency (LF), LF:HF, normalized HF and normalized LF. Participants were categorized into low- (<20 headers per season; n = 13) and high- (>20 headers per season; n = 9) exposure groups. Mann-Whitney U tests demonstrated no significant differences between groups for any HRV metric. However, the increased normalized LF power (low exposure 8.67 and high exposure -31.17, respectively; r = 0.35) and LF:HF power (-6.39 and 15.80, respectively; r = 0.35), between groups had moderate practical significance. Therefore, female youth players who perform more than 20 purposeful headers during a soccer season may exhibit altered autonomic function.<p />  <p>Language: en</p>
LA  - en
SN  - 1543-8627
UR  - http://dx.doi.org/10.1080/15438627.2021.1888098
ID  - ref1
ER  -