Table 8. Selected muscle strength and physical performance of healthy male adults at baseline and after 8 wk supplementation with FWPS or WPCS

Outcome variables	FWPS group (n=26)	WPCS group (n=22)	p-value1)
	Mean±SD	Mean±SD
Grip strength Rt
Baseline	40.91±4.91	40.99±6.49	0.915
8 wk	42.25±6.15	42.08±5.03
Difference2)	–1.34±6.08	–1.09±4.63
p-value3)	0.272	0.281
Grip strength Lt
Baseline	40.31±5.46	39.71±5.34	0.186
8 wk	42.57±5.28	40.77±4.64
Difference2)	–2.26±3.86	–1.06±3.91
p-value3)	0.006*	0.216
Back muscle strength
Baseline	115.94±21.69	109.66±18.53	0.128
8 wk	125.99±21.28	120.60±22.09
Difference2)	–10.05±13.96	–10.94±17.42
p-value3)	0.001*	0.008*
Dynamic balance Rt
Baseline	101.03±12.67	96.79±9.10	0.032**
8 wk	104.68±16.58	97.81±8.13
Difference2)	–3.65±7.62	–1.02±7.50
p-value3)	0.022*	0.528
Dynamic balance Lt
Baseline	96.48±10.01	92.72±8.38	0.032**
8 wk	104.28±15.06	98.26±9.52
Difference2)	–7.80±10.03	–5.54±8.40
p-value3)	0.001*	0.006*
Arm circumference
Baseline	30.96±2.19	31.65±2.83	0.248
8 wk	32.04±2.37	32.33±3.09
Difference2)	–1.08±1.78	–0.68±1.60
p-value3)	0.005*	0.060*
Thigh girth
Baseline	51.12±3.12	51.53±3.53	0.925
8 wk	53.10±3.29	52.45±4.14
Difference2)	–1.99±2.67	–0.92±3.48
p-value3)	0.001*	0.230
Vertical jump
Baseline	45.44±8.27	44.18±6.46	0.316
8 wk	47.02±8.59	45.99±8.74
Difference2)	–1.58±4.80	–1.81±5.05
p-value3)	0.107	0.108

Compared between groups: p-value by two-way ANOVA,
Significant at p<0.05.
Difference between the values of baseline and after 8 wk.
Paired t-test between baseline and 8 wk,
Significant at p<0.05.
FWPS, fermented whey protein supplementation; WPCS, whey protein concentration supplementation; ANOVA, analysis of variance.