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 .
Hyperbaric oxygen therapy does not affect recovery from delayed onset muscle soreness.
PURPOSE This study investigated whether hyperbaric oxygen therapy ( HBOT ) improves recovery after exercise-induced muscle injury . METHODS Healthy male subjects ( N = 24 ) were r and omly assigned to either a placebo group or a HBOT group . Subjects were tested for maximal isometric strength ( preexercise ) of their right elbow flexors . Each subject then completed a high-force eccentric workout of the elbow flexor muscle group to induce  delayed onset muscle soreness (  DOMS ) . On the seven successive days after this workout , the subjects were exposed to a hyperbaric environment of 2.5 ATA for 60 min , inspiring either a normoxic mixture ( P(I)O2 = 0.2 ATA ; placebo group ) or a hyperoxic gas mixture ( P(I)O2 = 2.5 ATA ; HBOT group ) . Before the eccentric workout and daily for the next 10 d , measurements were obtained regarding : maximal isometric muscle strength of the elbow flexor muscles , right upper arm circumferences , and rating of the perceived muscle soreness . RESULTS Isometric strength decreased significantly from preexercise levels of 25.1 + /- 3.8 kp to postexercise levels of 12.0 + /- 4.6 kp , for the HBOT group , and from 24.6 + /- 3.4 kp to 12.5 + /- 3.7 kp , respectively , for the placebo group . Over the 10-d recovery period , there was no difference in the rate of recovery of muscle strength between the two groups . Perceived soreness peaked at about 48 h after exercise with no difference between groups . Also , the exercise-induced increases in arm circumference were similar in the two groups . CONCLUSIONS These results indicate that HBOT is not an effective therapy for the treatment of DOMS
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 .