Table 2. The mean of lower-extremity isometric muscle strength performed during the first and second test day for two testers using handheld dynamometry.

Patient		Tester I			Tester II
Number		Hip flexor	Knee extensor	Ankle dorsiflexor	Hip flexor	Knee extensor	Ankle dorsiflexor
1	Day 1	47.47	50.27	50.30	46.33	44.97	55.10
	Day 2	44.95	63.54	55.34	49.75	48.93	67.45
2	Day 1	41.00	35.67	7.00	38.67	35.67	7.47
	Day 2	48.32	28.67	13.48	43.28	41.38	17.86
3	Day 1	35.53	24.77	26.33	35.33	23.80	26.57
	Day 2	31.56	33.89	31.69	42.93	19.74	38.26
4	Day 1	42.10	66.23	41.80	42.53	66.80	42.53
	Day 2	37.11	79.63	50.12	44.31	61.16	47.82
5	Day 1	39.10	67.67	46.43	39.57	62.70	45.83
	Day 2	43.83	61.48	41.89	41.34	69.94	38.56
6	Day 1	23.47	34.30	11.63	20.50	34.43	11.43
	Day 2	27.34	39.12	8.12	24.38	33.83	18.66
7	Day 1	39.03	38.97	24.53	41.20	42.40	23.93
	Day 2	41.12	32.53	33.63	44.56	46.33	34.51
8	Day 1	21.87	35.70	24.40	22.47	39.07	23.50
	Day 2	23.35	44.71	28.27	17.82	47.32	19.97
9	Day 1	33.63	62.70	41.30	34.00	59.13	40.90
	Day 2	38.19	56.35	37.60	32.98	63.56	49.38
10	Day 1	38.13	39.30	52.53	40.10	41.10	53.80
	Day 2	43.12	45.97	51.80	42.12	44.56	60.02
11	Day 1	49.75	47.70	51.75	47.05	44.70	56.05
	Day 2	56.28	49.12	55.34	50.05	48.78	52.77
12	Day 1	36.25	26.65	27.75	36.50	24.20	27.60
	Day 2	32.73	23.47	25.11	31.22	28.11	33.61
13	Day 1	22.85	32.95	24.35	24.40	36.80	25.15
	Day 2	28.12	25.37	29.63	27.92	31.25	29.33
14	Day 1	40.55	40.10	51.80	40.85	41.05	51.55
	Day 2	50.77	52.79	54.22	43.52	44.98	64.72
15	Day 1	24.15	35.70	12.50	20.65	36.40	12.30
	Day 2	19.36	40.58	14.44	23.56	39.06	19.31

Measure force output unit: lb; Day 1: first test day; day 2: second test day