What your grip strength and balance really say about healthy aging

Assessing hand grip strength, testing balance, or rising from the floor to a standing position are often highlighted as indicators of healthy aging and potential longevity.

These physical assessments offer useful insights into an individual's endurance and strength. They help gauge the likelihood of falls—a major contributor to mortality among older adults—and assist clinicians caring for aging individuals or patients recovering from injury.

"A poor or declining result is a reason for a health professional to investigate why function is changing, rather than gauging how long someone will live," said Auriel Willette, an expert on brain aging at Rutgers University.

Understanding how mobility assessments function can help individuals properly interpret their physical results.

Variations of the "sit-to-stand" assessment have gained significant attention.

The U.S. Centers for Disease Control and Prevention uses a 30-second chair-stand test tailored for patients over 60, measuring how many times a person can stand up from a seated position within half a minute.

A separate routine trending on social media asks individuals to transition from standing down to sitting cross-legged on the floor, and then back up to a standing position.

Lowering oneself to the ground earns 5 points, as does standing back up, creating a maximum score of 10. Participants lose a full point for using support—such as a hand or knee—and half a point for losing balance. Anyone unable to sit or stand without external help receives a score of zero.

Physicians note that this specific floor test is rarely employed for older adults in the U.S. However, studies published by researchers in Brazil in 2020 and 2025 indicated that middle-aged individuals achieving higher scores had lower mortality rates over roughly a decade.

In American clinical settings, physicians frequently rely on the "Timed Up and Go" (TUG) evaluation. The test measures how quickly a patient can rise from a chair, walk 10 feet (3 meters), turn around, and return to sit down. This simple assessment allows clinicians to observe lower body strength, balance, and general mobility simultaneously.

Dr. George Hennawi, an eldercare specialist at MedStar Health in Baltimore, explained that mobility assessments are meant to identify specific physical limitations and isolate their root causes, such as knee pain, diminished reflexes, poor balance, or shortness of breath and dizziness stemming from cardiovascular issues.

"The key to react to it is to understand where did we not do well," he said.

Doctors view viral sit-to-stand movements as screening tools rather than comprehensive medical diagnostics. While effective at highlighting potential issues, they lack the detail required to reach a complete diagnosis.

A range of other tests measure what experts call "physiological age," examining how the body ages over time. These include evaluations of grip strength, walking pace, balance, and gait stability.