An elderly patient with declining muscle mass undergoes intense aerobic training; which outcome becomes more likely as increased mitochondrial activity occurs?

💡 Explanation

Intense aerobic exercise increases mitochondrial respiration to meet energy demands; because this process generates reactive oxygen species, it can overwhelm antioxidant defenses. Therefore, increased oxidative stress occurs, promoting protein turnover rather than muscle growth, while decreased inflammatory cytokines or satellite cell proliferation are not primary effects of this imbalance.

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