Table 2.

Results of the Principal Component Analysis

	Phase-1				Phase-2
Muscle	M1- mode	M2- mode	M3- mode	M4- mode	M1- mode	M2- mode	M3- mode	M4- mode
TA	−0.03	−0.20	0.06	0.93	0.04	−0.23	0.09	−0.89
VL	0.74	0.00	−0.11	−0.05	−0.76	0.03	−0.09	−0.08
VM	0.70	0.03	0.04	−0.01	−0.74	−0.05	−0.05	0.10
RF	0.81	0.03	−0.05	−0.03	−0.60	0.19	0.02	−0.50
RA	0.00	0.01	0.86	0.09	0.02	0.12	0.80	−0.14
SOL	0.00	−0.68	0.00	0.24	0.04	−0.83	−0.05	−0.04
GM	−0.05	−0.85	0.10	−0.04	−0.01	−0.87	0.04	−0.03
GL	0.01	−0.86	0.05	0.05	0.05	−0.91	0.03	−0.10
BF	0.68	−0.06	0.08	0.03	−0.73	0.08	−0.04	0.06
ST	0.74	0.03	0.10	−0.01	−0.75	−0.05	0.12	−0.06
ES	0.00	−0.01	0.87	0.17	0.00	−0.04	0.84	0.09
LD	0.08	−0.17	0.71	−0.22	0.02	−0.08	0.74	−0.06

Data for a representative subject for the Phase-1 and Phase-2 are shown. Loading factors are presented for the first four PCs (M-modes). Loadings over 0.5 are shown in bold. TA = tibialis anterior; VL = vastus lateralis; VM = vastus medialis; RF = rectus femoris; RA = rectus abdominis; SOL = Soleus; GM = gastrocnemius medialis; GL = gastrocnemius lateralis; BF = biceps femoris; ST = semitendinosus; ES = erector spinae; LD = latissimus dorsi