Abstract
Post-match assessment of creatine kinase (CK) activity and delayed-onset muscle soreness
(DOMS) are common markers of exercise-induced muscle damage and recovery status in
soccer players. These responses have not been examined in youth female players. This
study examined the effect of competitive match play on CK activity and DOMS in elite
youth players. Thirty-four elite female players, divided into three chronological
age groups (U13, n=11; U15, n=10; U17 n=12). Players completed baseline testing for
CK and DOMS that was repeated immediately (for DOMS), 80, 128 and 168 h post-competitive
match play for CK. Significant time effects were reported for CK (P=0.006) and DOMS
(P<0.01). Significant differences between baseline and 168 h post-match were reported
for CK (P<0.01), with significant group differences between the U13 and U17 groups
for CK (P<0.01). All parameters returned to baseline in U17s at 168 h, but increased
CK was evident for U13s and U15s at 168 h. In conclusion, seven days may be insufficient
for biochemical recovery in youth female athletes. Therefore, monitoring strategies
to assess muscle damage between training and match play should be considered to track
recovery and potentially reduce muscular injury risk.
Key words
creatine kinase - maturation - recovery - football
