article "Relationships between physical activity and muscular strength among healthy adults across the lifespan" (26th)

Clarisa Livia
16611022

The major findings of this study were that physical activity explained only 1–3 % of the variance in muscle strength; whereas gender explained 40–74 %, age 6–44 %, and BMI 2–16 % of the variance. In total, these models explained 53–77 % of the variance in muscle strength. Second, self-reported physical activity correlated with more strongly with measures of upper body strength, while objective measures of physical activity correlated with more strongly with measures of lower body strength.

In addition to providing clinicians with an overall picture of the important contributors to muscle strength across the lifespan, our findings provide insight into the discrepancies in this literature. Of import is that health care and exercise professionals should consider using multiple measures of physical activity and muscle strength and carefully consider the age and gender of the populations they employ to assess these relationships in their studies. Future studies may consider investigating these relationships in disease populations, as the contribution of physical activity to muscle strength may differ significantly from the healthy adult population.