| Young adults/adults (18–44 years) | Middle-aged/older adults (45–74 years) | ||
---|---|---|---|---|
Men | Women | Men | Women | |
Specific muscle strength (kg·kg−1) | ||||
 Normal | >  0.96 | >  0.83 | >  0.96 | >  0.63 |
 Low | 0.70–0.96 | 0.57–0.83 | 0.74–0.96 | 0.32–0.63 |
 Poor | < 0.70 | < 0.57 | < 0.74 | < 0.32 |
Specific muscle power (W·kg−1) | ||||
 Normal | >  7.19 | >  8.48 | >  6.79 | >  5.29 |
 Low | 3.31–7.19 | 3.61–8.48 | 3.90–6.79 | 1.76–5.29 |
 Poor | <  3.31 | <  3.61 | <  3.90 | <  1.76 |