Table 1. Changes in maximal muscle strength, serum myoglobin concentrations, creatin phosphokinase (CPK) activities, and VAS scores for muscle pain. There was no significantly difference between Placebo and LEAA ingestion. CI means confidence interval. Group P and Group A mean placebo group and LEAA group.

Mesurement item	Group		Pre	Post	Day 1	Day 2	Day 3	Day 5	Day 7
Muscle power (W)	Group P	Mean	49.7	31.1	36.1	37	36.5	40.5	39.6
		95%CI (Lower)	41.9	23.4	28.3	29.3	28.7	32.7	31.8
		95%CI (Upper)	57.5	38.9	43.9	44.8	44.3	48.2	47.4
	Group A	Mean	48	30	37.2	37.2	35.9	41.4	43.7
		95%CI (Lower)	40.2	22.2	29.4	29.4	28.1	33.6	35.9
		95%CI (Upper)	55.7	37.7	45	45	43.6	49.1	51.5
MB (ng/ml)	Group P	Mean	33.2	36.1	59.4	440	615	200	67
		95%CI (Lower)	18.2	19.9	32.7	242	338	110	36.8
		95%CI (Upper)	60.3	65.7	108.2	801	1,120	363	122
	Group A	Mean	40.6	42	64.8	231	386	113	68
		95%CI (Lower)	22.3	23.1	35.6	127	212	62.1	37.4
		95%CI (Upper)	73.8	76.4	117.9	420	703	205	124
CPK (IU/L)	Group P	Mean	142	144	247	1,412	5,195	7,811	1,660
		95%CI (Lower)	65.8	66.8	115	657	2,416	3,633	772
		95%CI (Upper)	304	309	531	3,036	11,169	16,792	3,568
	Group A	Mean	187	187	286	810	3,006	2,380	1,112
		95%CI (Lower)	86.9	87.2	133	377	1,398	1,107	517
		95%CI (Upper)	402	403	615	1,741	6,462	5,116	2,390
VAS scores for muscle pain	Group P	Mean	0	3.1	5.3	6	5.3	2.4	1
		95%CI (Lower)	−1.4	1.7	3.9	4.7	3.9	1.1	−0.4
		95%CI (Upper)	1.3	4.4	6.6	7.4	6.6	3.7	2.3
	Group A	Mean	0.1	3	4.3	5.5	5.2	1.7	1
		95%CI (Lower)	−1.2	1.6	3	4.2	3.9	0.4	−0.3
		95%CI (Upper)	1.5	4.3	5.7	6.8	6.6	3.1	2.4