For senior persons, protein intake between 1.2 and 2.0 g/kg/day or more is advised by experts in the field of protein and aging. The RDA of 0.8 g/kg/day, which represents a value at the low end of the AMDR, is significantly below these recommendations.
In physically active older adults with relatively low habitual dietary protein consumption, an improvement in physical performance, an increase in lean body mass, and a decrease in fat mass were observed after walking exercise training. A larger increase in relative lean body mass and larger reduction in fat mass were observed in participants receiving 12 weeks of daily protein supplementation compared with controls, whereas this was not accompanied by differences in improvements between groups in muscle strength and physical performance.
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