All education

Muscle Strength

What the research says about muscle strength, in plain English, with every original paper linked.

THE STUDIES

3 studies on this topic

2026

Women's Health UK

At 68, She Started Weightlifting After a Back Injury and Arthritis. Now She Leg Presses 120kg

Studied: A 68-year-old woman in Delhi with knee arthritis and a spinal injury

A true story, not a study — one woman's result won't happen for everyone. But Roshni Devi Sangwan is a living example of what the research on this page describes: after a spinal injury and arthritis at 68, she started with 5kg and built up to a 110kg deadlift by 70, training consistently, adding weight gradually, eating enough protein, and resting well. Her back pain eased so much her doctor told her to just keep going to the gym.

ArthritisReal StoriesMuscle Strength

2026

Geriatrics & Gerontology International

Effectiveness of High-Intensity Versus Low-to-Moderate-Intensity Resistance Training in Improving Muscle Strength and Bone Mineral Density in Older Adults: A Systematic Review and Meta-Analysis

Studied: 1,283 participants across 18 RCTs, adults ≥50

Comparing 18 trials in adults 50+, high-intensity training (≥70% of one-rep max) beat lighter loads for building leg strength, while both intensities protected bone density about equally — with no difference in fall or injury rates.

2022

Sports Medicine

Progressive Resistance Training for Concomitant Increases in Muscle Strength and Bone Mineral Density in Older Adults: A Systematic Review and Meta-Analysis

Studied: Men and/or women ≥65 years (pooled RCTs)

Across randomized trials in adults 65 and older, progressive resistance training reliably increased leg strength and hip/femur bone density together — with higher training frequency linked to bigger gains in both.

These summaries are general education, not medical advice. Individual results vary, and research on groups does not replace advice about your body from your doctor.