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 .
Short-term beta-hydroxy-beta-methylbutyrate supplementation does not reduce symptoms of eccentric muscle damage.
PURPOSE We examined the effects of short-term beta-hydroxy-beta-methylbutyrate ( HMB ) supplementation on symptoms of muscle damage following an acute bout of eccentric exercise . METHODS Non-resistance trained subjects were r and omly assigned to a HMB supplement group ( HMB , 40mg/kg bodyweight/day , n = 8) or placebo group ( CON , n = 9 ) . Supplementation commenced 6 days prior to a bout of 24 maximal isokinetic eccentric contractions of the elbow flexors and continued throughout post-testing . Muscle soreness , upper arm girth , and torque measures were assessed pre-exercise , 15 min post-exercise , and 1 , 2 , 3 , 4 , 7 , and 10 days post-exercise . RESULTS No pre-test differences between HMB and CON groups were identified , and both performed a similar amount of eccentric work during the main eccentric exercise bout ( p > .05 ) . HMB supplementation had no effect on swelling , muscle soreness , or torque following the damaging eccentric exercise bout ( p > .05 ) . CONCLUSION Compared to a placebo condition , short-term supplementation with 40mg/kg bodyweight/day of HMB had no beneficial effect on a range of symptoms associated with eccentric muscle damage . If HMB can produce an ergogenic response , a longer preexercise supplementation period may be necessary
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 .