Some authors also point to microdamage to peripheral nerves as the reason for the perceived pain and limited functional capacity. Besides, the release of proinflammatory cytokines leads to an accumulation of leukocytes. Damage to the sarcolemma and the muscle cell membrane causes a release of the biochemical markers, such as creatine kinase (CK),which can be used to determine recovery rate. DOMS may be caused by an inflammatory reaction resulting from muscle tissue damage. Repeated eccentric exercises most commonly induce DOMS, the onset of which usually occurs between 12 and 48 h after heavy exertion. This microtrauma is perceived as soreness after exercises and is referred to as delayed onset muscular soreness (DOMS). Physical activity, especially of high intensity, leads to tissue microtrauma, mainly in the skeletal muscle tissue. Trial registration The study was retrospectively registered in the Australian New Zealand Clinical Trials Registry (ANZCTR) The trial registration number: ACTRN12621001294842 date of registration. Future research should focus on the potential impact of treatment frequency and duration on muscle recovery.
The prescription of IPC and INP did not attenuate the reduction of markers to muscle function or pain perception up to 48 h after muscle damaging exercise. However, there was an increase in muscle soreness ( P < 0.05), CK and LDH activity ( P < 0.05), and a reduction in muscle strength ( P < 0.05) and range of active knee flexion ( P < 0.05). No significant intergroup differences were observed in biochemical or functional measurements. Creatine kinase (CK), lactate dehydrogenase (LDH), isokinetic muscle strength, soreness and active flexion of the knee joint were measured after every therapy session. Immediately post, 24 and 48 h post eccentric exercise consisting of 100 drop jumps, volunteers randomly received 30-min sessions of intermittent pneumatic compression (IPC, n = 15) or intermittent negative pressure (INP, n = 15), or sham microcurrent (PT, n = 15). Methodsįorty-five healthy males were recruited.
The study aimed to assess whether intermittent pneumatic compression (IPC) and intermittent negative pressure (INP) would attenuate the muscle damaging effects of eccentric exercise.
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