Table 1.

Anthropometric characteristics of subjects

	Before BR	After BR	Change, %
Body mass, kg	75.0 ± 9.9	72.4 ± 9.2*	−3.4
BMI, kg/m2	23.4 ± 1.9	22.6 ± 1.7*	−3.4
FFM, kg	62.1 ± 6.3	60.6 ± 5.8*	−2.4
Total muscle mass, kg	31.9 ± 3.7	30.9 ± 3.4*	−3.1
Quadriceps muscle mass, kg	2.21 ± 0.16	2.13 ± 0.14*	−3.8
Body fat, %	17.0 ± 3.6	16.0 ± 3.2*	−5.1

Values are means ± SD for anthropometric and body composition data before and after bed rest (BR). Mean percentage of change for each parameter is also reported. BMI, body mass index; FFM, fat-free mass.

^*Significantly different vs. values before BR (P < 0.05).