Soccer is an intermittent sport including a high number of powerful actions such as accelerations, decelerations, changes of direction, jumps and impacts that incorporate a strong eccentric component and may therefore lead to skeletal muscle damage. Indeed, match activity is associated with the onset of muscle damage and an acute inflammatory response that result in attenuated performance for as long as 1 to 3 days. In competitive soccer though, multiple matches are performed within a small-time frame resulting in inadequate muscle recovery and reduced field performance. Supplementation with milk proteins following intense exercise protocols has been shown to stimulate protein synthesis and facilitate muscle recovery. Thus, the aim of the present investigation is to examine the effects of milk protein supplementation on muscle recovery and soccer-specific performance during an in-season microcycle with two matches performed three days apart.
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Change in creatine kinase in plasma
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in uric acid in plasma
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in protein carbonyls in blood
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in total antioxidant capacity
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in reduced glutathione in blood
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in oxidized glutathione in blood
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in malondialdehyde in blood
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in catalase activity
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in protein carbonyls in muscle
Timeframe: At baseline, 24h post-Match 1 and 24h post-Match 2
Change in intracellular signaling proteins in muscle
Timeframe: At baseline, 24h post-Match 1 and 24h post-Match 2
Change in proteasome activities in muscle
Timeframe: At baseline, 24h post-Match 1 and 24h post-Match 2
Change in satellite cells in muscle
Timeframe: At baseline, 24h post-Match 1 and 24h post-Match 2
Change in repeated Sprint Ability
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in countermovement jump
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in isokinetic strength of lower limbs
Timeframe: At baseline, at 24h, 48h and 72h post-Match 1 as well as at 24h, 48h and 72h post-Match 2
Change in match activity
Timeframe: During Match 1 and Match 2
Change in heart rate
Timeframe: During Match 1 and Match 2