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 .
Effects of Hyperbaric Oxygen on a Human Model of Injury
To determine whether intermittent exposures to hyperbaric oxygen enhance recovery from delayed-onset muscle soreness of the quadriceps , we conducted a r and omized , controlled , double-blinded , prospect i ve study using 66 untrained men between the ages of 18 and 35 years . After the induction of muscle soreness , these subjects were treated in a hyperbaric chamber over a 5-day period in two phases , with four groups ( control , hyperbaric oxygen treatment , delayed treatment , and sham treatment ) in the first phase ; and three groups ( 3 days of treatment , 5 days of treatment , and sham treatment ) in the second phase . The hyperbaric exposures involved 100 % oxygen for 1 hour per day at 2.0 atm . The sham treatments involved 21 % oxygen for 1 hour per day at 1.2 atm . We monitored recovery using a leg dynamometer to test eccentric torque of the nondominant quadriceps muscle before and immediately after exercise and at 48 and 96 hours after exercise . Pain was tested daily using visual analog pain scales . In phase 1 a significant difference in recovery of eccentric torque was noted in the treatment group compared with the other groups . In phase 2 , the recovery of eccentric torque for the 5-day treatment group was significantly greater than for the sham group from immediately after exercise to 96 hours after exercise . The pain data did not differ significantly in any comparison in either phase . The results suggest that treatment with hyperbaric oxygen may enhance recovery of eccentric torque of the quadriceps muscle from delayed-onset muscle soreness
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 .