Periods of muscle disuse are commonly experienced in young and elderly individuals as a result of short-term hospitalization or leg casting after injury. Periods of immobilization result in a profound loss of muscle mass and strength. This loss of muscle mass can have negative effects on health and the ability to carry out activities of daily living. Thus, it is very important to try to maintain muscle mass during muscle disuse. Recent research suggests that Fortetropin, which is an all-natural protein-fat complex made from fertilized hen egg yolks, can enhance muscle mass and strength with weightlifting in young men. In this study, we aim to investigate the safety and tolerability of Fortetropin and whether Fortetropin supplementation can reduce or prevent the loss of muscle mass during single-leg immobilization while you are wearing a knee brace. To make this decision, we require a study to compare Fortetropin to a placebo (something that contains the same amount of protein and energy as Fortetropin). The findings from this study will help us understand if Fortetropin supplementation is safe, tolerable, and can be used to slow muscle loss in people who undergo periods of muscle disuse (i.e. surgery, sickness).
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Vastus lateralis cross sectional area
Timeframe: Baseline (Day 0), pre-immobilization (Day 14), post-immobilization (Day 28), post-recovery (Day 42)
Single fiber cross sectional area
Timeframe: Baseline (Day 0), pre-immobilization (Day 14), post-immobilization (Day 28), post-recovery (Day 42)
Fat-and-bone free-mass
Timeframe: Baseline (Day 0), pre-immobilization (Day 14), post-immobilization (Day 28), post-recovery (Day 42)