The Claim
Resistance training performed three times per week for 13 weeks preserves fat-free mass during moderate energy restriction (500 kcal/day deficit) in overweight, postmenopausal women aged 68±1 years, reducing fat-free mass loss from 1.6 kg in sedentary individuals to 0.3 kg, despite similar total weight and fat mass loss.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
If overweight women in their late 60s cut their daily calories by 500 and lift weights three times a week for 13 weeks, they keep more of their muscle compared to those who don’t exercise—even though both groups lose the same amount of overall weight and fat.
See the scientific wording
Resistance training performed three times per week for 13 weeks preserves fat-free mass during moderate energy restriction (500 kcal/day deficit) in overweight, postmenopausal women aged 68±1 years, reducing FFM loss from 1.6 kg in sedentary individuals to 0.3 kg, despite similar total weight and fat mass loss.
What the research says
1 studyThe study found that older women who did strength training three times a week while dieting lost much less muscle than those who didn’t train — even though both groups lost the same amount of total weight and fat. So yes, lifting weights helps keep muscle when losing weight.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.