Objective: we measured muscle nerve and functional mobility in healthy men and women across the adult age range to investigate the changes with age and sex and to establish the weights of the anthropometric indices height and weight.

Objective: we measured muscle nerve and functional mobility in healthy men and women across the adult age range to investigate the changes with age and sex and to establish the weights of the anthropometric indices height and weight. Design: cross-sectional investigation Subjects and methods: we recruited 74 healthy women (mean age 490 range 20-90) and 81 healthy men (mean age 516 range 20-90) We measured maximum isometric knee extension force handgrip strength and explosive leg extensor power. We assessed functional mobility quantitatively with the timed 'get up and go' proof and the modified Cooper proof Results: older subjects had lower values for muscle force and muscle power than young subdues Times for the timed 'get up and go' standard were longer and distances in the modified Cooper standard shorter. At about the age of 55 women showed an acceleration in the decline of isometric knee extension hardness and handgrip strength (between 20 and 55 years, knee vigor decreased by 10.3% and handgrip toughness decreased by 8.2%, between 55 and 80 years the decreases were 402% and 28% respectively). Men showed a more gradual declines through the whole extent of the adult age range, with decreases in knee and handgrip might of 24% and 19.6% between 20 and 55 years, and 23% and 174% between 55 and 80 years. The age-related decline is partly associated with differences in height and corpse weight. Women had higher correlations between muscle puissance and functional mobility tests than men Conclusions: muscle solidity and functional mobility decline with age in healthy people; in women we observ an accelerated lessening in muscle strength above the age of 55 Lower values in healthy ancient subjects are partly associated with differences in height and dead body weight.

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