Conclusion Overall , our findings do not support the presence of a secondary loss of strength following an acute muscle injury , and strongly suggest that strength , on average , recovers steadily over the first 3 days post-injury
Background An immediate loss of strength follows virtually all types of muscle injury but there is debate whether the initial strength loss is maximal or if a secondary loss of strength occurs during the first 3 days post-injury .
Objective The objective of this analysis was to conduct a systematic review and meta- analysis of the research literature to determine if a secondary loss of strength occurs after an injurious initiating event .
The effects of a repeated bout of eccentric exercise on indices of muscle damage and delayed onset muscle soreness.
This study examined markers of muscle damage following a repeated bout of maximal isokinetic eccentric exercise performed prior to full recovery from a previous bout . Twenty non-resistance trained volunteers were r and omly assigned to a control ( CON , n=10 ) or experimental ( EXP , n=10 ) group . Both groups performed 36 maximal isokinetic eccentric contractions of the elbow flexors of the non-dominant arm ( ECC1 ) . The EXP group repeated the same eccentric exercise bout two days later ( ECC2 ) . Total work and peak eccentric torque were recorded during each set of ECC1 and ECC2 . Isometric torque , delayed onset muscle soreness ( DOMS ) , flexed elbow angle and plasma creatine kinase ( CK ) activity were measured prior to and immediately following ECC1 and ECC2 . at 24h intervals for 7 days following ECC1 and finally on day 11 . In both groups , all dependent variables changed significantly during the 2 days following ECC1 . A further acute post-exercise impairment in isometric torque ( 30 + /- 5 % ) and flexed elbow angle ( 20 + /- 4 % ) was observed following ECC2 ( p<0.05 ) , despite EXP subjects producing uniformly lower work and peak eccentric torque values during ECC2 ( p<0.05 ) . No other significant differences between the CON and EXP groups were observed throughout the study ( p>0.05 ) . These findings suggest that when maximal isokinetic eccentric exercise is repeated two days after experiencing of contraction-induced muscle damage , the recovery time course is not significantly altered
Conclusion Overall , our findings do not support the presence of a secondary loss of strength following an acute muscle injury , and strongly suggest that strength , on average , recovers steadily over the first 3 days post-injury
Background An immediate loss of strength follows virtually all types of muscle injury but there is debate whether the initial strength loss is maximal or if a secondary loss of strength occurs during the first 3 days post-injury .
Objective The objective of this analysis was to conduct a systematic review and meta- analysis of the research literature to determine if a secondary loss of strength occurs after an injurious initiating event .