Key fitness measure is strong predictor of longevity after certain age, study finds

This material may not be published, broadcast, rewritten, or redistributed. ©2026 FOX News Network, LLC. All rights reserved. Quotes displayed in real-time or delayed by at least 15 minutes. Market data provided by Factset. Powered and implemented by FactSet Digital Solutions. Legal Statement. Mutual Fund and ETF data provided by LSEG. OB/GYN Dr. Mary Claire Haver of The 'Pause Life reveals why women face far higher fracture rates than men and shares her top recommendation for keeping bones strong and healthy. For women over 60, muscle strength plays a critical role in longevity, a new study confirms. Researchers at the University at Buffalo, New York, followed more than 5,000 women between the ages of 63 and 99, finding that those with greater muscle strength had a significantly lower risk of death over an eight-year period. The findings were published in JAMA Network Open. EXERCISE AFFECTS THE HEART IN A HIDDEN, POWERFUL WAY BY REWIRING NERVES, STUDY FINDS Muscle function was measured using grip strength and how quickly participants could complete five unassisted sit-to-stand chair raises. These are two tests commonly used in clinical settings to evaluate muscle function in older