Effects of High Protein Diet on Muscle Mass, Strength, and Physical Performance in Postmenopausal Women

A Randomised Controlled Intervention Study Investigating the Effects of High Protein Diet on Body Composition, Strength, and Physical Performance in Postmenopausal Women

Despite the importance of preventing muscle mass loss during senescence, only a few studies have investigated the relationship between diet and muscle mass in postmenopausal women. Therefore, the aim of this study is to investigate whether controlled protein consumption at the current Recommended Daily Allowance (RDA = 0.8 g/kg body weight) or twice the RDA (1.6 g/kg body weight) affects skeletal muscle mass, strength, and physical performance in postmenopausal women. In this parallel-group trial, participants were randomized for 6 months to low glycemic index diets with controlled protein consumption at the current RDA or twice the RDA, aimed to balance energy needs.

Inclusion Criteria:

• Postmenopausal women
• Without mobility aids, able to perform activities of daily living independently

Exclusion Criteria:

• Use of hormone therapy in the past 3 months
• Insulin therapy
• Previous diagnosis of heart disease
• Untreated thyroid diseases
• Conditions affecting neuromuscular function