Effects of a dietary supplement on golf drive distance and functional indices of golf performance

Table 3 Golf performance using repeated measures ANOVA

dummyonly	Intervention			Comparison of change (p)
	Pre	Post	Change	Effect size ( d )	Within groups	Group × Time
Best 7 Iron Club Speed (miles/hour)
PLA	86.7 ± 8.9	88.0 ± 4.6	1.39 ± 4.9	0.15	0.32	0.50
SD	92.1 ± 4.8	92.5 ± 5.2	0.44 ± 1.7	0.09	0.34	0.50
Best 7 Iron Ball Speed (miles/hour)
PLA	113.8 ± 12.9	115.4 ± 8.8	1.51 ± 7.5	0.11	0.79	0.44
SD	120.8 ± 6.3	120.5 ± 6.9	−0.25 ± 3.9	0.04	0.80	0.44
Best Distance 7 Iron (yards)
PLA	162 ± 24	169 ± 21	6.9 ± 13	0.31	0.08	0.93
SD	174 ± 15	181 ± 13	7.4 ± 18	0.53	0.14	0.93
Best Driver Club Speed (miles/hour)
PLA	104.5 ± 9.3	104.9 ± 6.5	0.45 ± 4.6	0.05	0.73	0.46^§
SD	110.4 ± 5.1	110.1 ± 5.7	−0.31 ± 3.6	0.06	0.76	0.46^§
Best Driver Ball Speed (miles/hour)
PLA	147.5 ± 13.8	148.6 ± 9.5	1.1 ± 7.5	0.09	0.61	0.17^§
SD	158.9 ± 6.6	159.1 ± 7.9	0.19 ± 7.6	0.03	0.93	0.17^§
Best Driver Distance (yards)
PLA	260.0 ± 30.4	258.8 ± 29.6	−1.2 ± 18.6	0.04	0.82	0.04^§
SD	269.9 ± 18.5	283.5 ± 23.1	13.6 ± 29.0	0.75	0.10	0.04^§

Values are mean ± SD. ^§= Group differences assessed using ANCOVA with respective baseline scores as the covariate due to significant difference between groups at baseline.

ISSN: 1550-2783