In 14 studies that included a total of 53,476 people, the death rate was 1.67 times higher for people with the weakest grip strength than for those with the strongest grip.
Five studies that included a total of 14,692 people found that the death rate was 2.87 times higher for the slowest walkers than for the fastest walkers.
Five studies that included a total of 28,036 people found that the death rate was nearly twice as high for people who were slowest to rise from a chair than for those who were quickest at this task.
While most of the studies included older people, the association between grip strength and death risk was also found in younger adults, the researchers said. The study was published online Sept. 10 in the BMJ.