A simple chair test that takes just 30 seconds may offer surprising clues about your overall health, strength, and even your risk of early death. Researchers now say that how easily older adults can repeatedly sit down and stand up from a chair could help predict longevity, fracture risk, and hospitalisation chances.
The study, published in the Journal of Sport and Health Science, highlights the growing importance of muscle power and mobility as key indicators of healthy ageing.
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What is the 30-second sit-to-stand test?
The test is straightforward: participants sit on a chair and stand up and sit back down as many times as possible within 30 seconds. Researchers tracked 1,876 adults aged 65 and older and used their results to measure “sit-to-stand power” – a marker of lower body strength and physical function.
Scientists combined the number of repetitions with body weight, height, and chair height to calculate power output in watts per kilogram of body weight. The results were striking. Older adults with low sit-to-stand power faced a significantly higher risk of death from any cause compared to those with normal strength levels.
Women faced greater risks
The study found that women with low scores were nearly twice as likely to die during the observation period, while men had about a 57 per cent increased mortality risk. Researchers identified benchmark scores for healthy muscle power:
- Men: 2.53 watts per kilogram
- Women: 2.01 watts per kilogram
Alarmingly, around 57 per cent of participants scored below these healthy thresholds. Experts say low muscle power is becoming increasingly common among older adults and may be even more widespread than age-related muscle loss, also known as sarcopenia.
Link between muscle strength and bone health
The findings of the study also revealed an important connection between muscle power, falls, and fractures.
Women with low sit-to-stand power were more than three times more likely to have suffered a hip fracture within the previous year compared to women with normal scores. Hip fractures are among the most serious injuries in older adults and can severely impact independence and quality of life. In men, low muscle power was linked more strongly to falls and fractures throughout the body rather than specifically hip fractures.
Researchers believe hormonal changes after menopause may explain why women become particularly vulnerable to hip injuries due to declining bone density.
How to improve muscle strength and mobility?
Health experts stress that muscle strength can improve at any age with regular movement and resistance training. The NHS recommends doing strength-building activities at least twice a week, including:
- Squats and lunges
- Stair climbing
- Resistance band workouts
- Weight training
- Cycling
- Yoga
- Dancing
- Gardening and digging
Adults are also encouraged to get at least 150 minutes of moderate cardio exercise every week.
Why these tests matter?
Doctors say these simple movement-based tests are valuable because they can identify hidden declines in physical function before major health problems appear.
Lower body strength is essential for balance, independence, mobility, and preventing dangerous falls. As people age, maintaining muscle power may be just as important as monitoring blood pressure, cholesterol, or heart health.