This study is a double-blind, randomized, placebo-controlled, crossover clinical trial of N=40 recreationally active men to be recruited a single investigational center in Ohio (i.e., The Center for Applied Health Sciences). Subjects will take a daily protein supplement (e.g., 15 g of pea protein or 15 g of pea protein + probiotic blend) for 4 weeks, have a 1-week washout period (i.e. meaning they will not take either supplement), and then take the alternate protein supplement for an additional 4 weeks. Outcome variables include plasma amino acids, muscle damage, muscle recovery, and GI tolerance.
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Plasma amino acids
Timeframe: Change from baseline to 4 weeks.
Lactate dehydrogenase (LDH)
Timeframe: Change from baseline to 24 hours after acute exercise.
Creatine kinase (CK)
Timeframe: Change from baseline to 24 hours after acute exercise.
Myoglobin
Timeframe: Change from baseline to 24 hours after acute exercise.
Blood Urea Nitrogen (BUN)
Timeframe: Change from baseline to 24 hours after acute exercise.
Mid thigh circumference
Timeframe: Change from baseline to 24 hours after acute exercise.