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 .
Dietary apple polyphenols have preventive effects against lengthening contraction-induced muscle injuries.
We examined whether polyphenols from dietary apple have protective effects against exercise-induced muscle strain injury . Sixteen male Wistar rats were r and omly assigned into the apple polyphenol ( APP ; N=8 ) and control ( CON ; N=8 ) groups . The APP and the CON groups were fed diets with and without 5 % APP , respectively . After a 3-wk feeding period , the gastrocnemii of the animals were subject to lengthening contractions with electrical stimulation and forced ankle dorsiflexion . Isometric torques were measured before and after the lengthening contractions and on days 1 , 2 , 3 , 5 , and 7 after the contractions . On day 7 , the animals were sacrificed and the gastrocnemii harvested . Thiobarbituric-acid-reactive substances , protein carbonyl , and mRNA of antioxidative proteins in the muscles were quantified . The APP group had significantly lower torque deficits than the CON group on days 3 , 5 , and 7 after the eccentric contractions . The thiobarbituric-acid-reactive substances and protein carbonyl levels in the case of the APP group were significantly lower than those in the case of the CON group . The APP group had significantly higher glutathione-S-transferase alpha1 mRNA levels than the CON group . Therefore , we conclude that dietary APPs have protective effects against lengthening contraction-induced muscle injury
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 .