A new study in pre- and post-menopausal women (aged 40-60 years) found 2 weeks of inactivity (<1,500 steps per day) was enough to drop strength by about 9% (and muscle mass by 2%). But here comes the good news:
Not only did 12 weeks of resistance training restore these deficits, it further improved strength and muscle mass ABOVE starting levels.
Source:Trezise J, Lima RM, Poppitt SD, Fanning AC, Devine A, Blazevich AJ. Postinactivity exercise training improves sarcopenia traits in 40-60-year-old women regardless of fortified milk supplementation. J Cachexia Sarcopenia Muscle. 2025 Dec;16(6):e70080. doi: 10.1002/jcsm.70080.
