Table 3.

Indices of MUSCLE STRENGTH measured before and after bed rest in controls and LMMS. Baseline and day 90 values are presented in foot-pounds. LMMS did not show a significant “benefit” on preserving muscle extension in concentric or eccentric motion; however there was a significant retention during flexion in multiple concentric measures. Percent difference from baseline for both control and LMMS, as well as the “benefit” of LMMS (inferred from relative LMMS retention of baseline measures as compared to control) at that time point, are also provided.

	Control Baseline	LMMS Baseline	Control 90d	LMMS 90d	Benefit of LMMS	p
Knee Concentric Strength
Extension at 60°/sec	109 ± 43	120 ± 31	81 ± 39	90 ± 24	+2.7%	0.33
Extension at 180°/sec	80 ± 33	88 ± 28	63 ± 28	70 ± 23	+3.7%	0.48
Flexion at 60°/sec	64 ± 25	63 ± 17	51 ± 19	53 ± 14	+21.9%	0.13
Flexion at 180°/sec	48 ± 19	51 ± 15	41 ± 16	47 ± 13	+46.2%	0.01
Knee Concentric Endurance
Extension at 180°/sec	1158 ± 511	1028 ± 339	945 ± 442	881 ± 296	+22.3%	0.17
Flexion at 180°/sec	624 ± 306	510 ± 130	521 ± 279	493 ± 171	+79.8%	0.02
Ankle Concentric Strength
Extension at 30°/sec	72.5 ± 22·8	80.4 ± 16.5	52.9 ± 23.7	59 ± 16	+1.5%	0.32
Flexion at 30°/sec	22.1 ± 8·8	24.0 ± 6.6	20.5 ± 8.3	21.8 ± 6.5	−26.6%	0.28
Ankle Eccentric Strength
Extension at 30°/sec	108 ± 28.0	121 ± 29.5	74.8 ± 34.1	83.2 ± 25.3	−1.6%	0.39
Flexion at 30°/sec	36 ± 12.4	38.9 ± 10.2	30.1 ± 13.3	34.9 ± 8.8	+37.3%	0.07
Back Concentric Strength
Extension at 60°/sec	249 ± 97	222 ± 72	218 ± 96	202 ± 72	+27.6%	0.44
Flexion at 60°/sec	132 ± 23	133 ± 46	119 ± 31	127 ± 44	+54.2%	0.10

P-values represent the significance of the effects of LMMS vs. controls.