Mixed
For men under 60, the rate of decline in grip strength is a more significant predictor of mortality than the absolute level of strength.
If you are under 60, don't just focus on how strong you are today. Pay attention to whether your strength is staying the same, improving, or declining. A steady decline in strength, even if you are still strong, is a warning sign for increased mortality risk. Regular strength training can help maintain or improve strength, mitigating this risk.
In men 60 years, rate of loss of strength was more important than the actual levels.
Why this rating
Same longitudinal study design, but the finding is specific to a subgroup (<60 years) and relies on the rate of change calculation.
Source
Skeletal Muscle Strength as a Predictor of All-Cause Mortality in Healthy Men
E. J. Metter et al. · The Journals of Gerontology Series A · 2002
DOI 10.1093/gerona/57.10.b359
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