Table 2 Descriptive data on muscle thickness (MT), knee extension torque (KETQ), estimated lean tissue mass (LTM), time for sit-to-stand test (STS-T), and sit-to-stand power (STS-P)
From: Age-related change in sit-to-stand power in Japanese women aged 50 years or older
| Â | Age group | ||||||
|---|---|---|---|---|---|---|---|
Variables | G50-54 n = 32 | G55-59 n = 56 | G60-64 n = 112 | G65-69 n = 151 | G70-74 n = 126 | G75-79 n = 57 | G80+ n = 22 |
MT, cm | |||||||
Thigh anterior | 4.4 (0.6) | 4.3 (0.6) | 4.1 (0.6) | 3.8 (0.5) | 3.7 (0.5) | 3.4 (0.4) | 3.0 (0.5) |
Thigh posterior | 5.7 (0.5) | 5.7 (0.7) | 5.8 (0.7) | 5.7 (0.7) | 5.5 (0.8) | 5.5 (0.7) | 4.9 (0.8) |
Lower leg anterior | 2.6 (0.2) | 2.6 (0.3) | 2.7 (0..2) | 2.6 (0.3) | 2.5 (0.3) | 2.5 (0.2) | 2.3 (0.3) |
Lower leg posterior | 6.0 (0.4) | 6.0 (0.5) | 6.0 (0.5) | 6.0 (0.5) | 5.9 (0.4) | 5.9 (0.5) | 5.4 (0.5) |
LTM, kg | 6.7 (0.8) | 6.7 (1.0) | 6.4 (0.8) | 6.2 (0.8) | 5.9 (0.8) | 5.6 (0.8) | 4.8 (0.8) |
KETQ, Nm | 90.5 (17.9) | 84.4 (20.0) | 77.1 (22.5) | 70.9 (20.0) | 66.5 (18.3) | 57.4 (17.7) | 47.0 (14.2) |
STS-T, s | 9.8 (2.0) | 10.4 (2.0) | 11.8 (3.2) | 12.2 (3.6) | 13.9 (5.1) | 16.6 (6.1) | 24.0 (9.4) |
STS-P, W | 159.8 (33.8) | 157.3 (35.3) | 131.7 (33.1) | 124.4 (32.8) | 111.9 (35.6) | 89.0 (35.1) | 59.2 (25.1) |