Journal of the International Society of Sports Nutrition

Table 2 Ratings of perceived exertion recorded in each experimental group

From: Effects of caffeine supplementation on physical performance and mood dimensions in elite and trained-recreational athletes

		Elite	Recreational	p-values (ES)
		Elite	Recreational	Supplementation	Group	Supplementation x Group
RPE_legs	Caffeine	15.63 ± 2.82	18.00 ± 1.15	0.548 (0.02)	0.021* (0.29)	0.889 (0.001)
	Placebo	15.88 ± 3.68	18.40 ± 0.97	0.548 (0.02)	0.021* (0.29)	0.889 (0.001)
RPE_cardio	Caffeine	14.50 ± 3.62	17.20 ± 1.75	0.419 (0.04)	0.019* (0.30)	0.785 (0.05)
	Placebo	14.75 ± 2.76	17.70 ± 1.57	0.419 (0.04)	0.019* (0.30)	0.785 (0.05)
RPE_general	Caffeine	15.50 ± 3.66	17.70 ± 1.16	0.094 (0.16)	0.079 (0.18)	0.846 (0.002)
	Placebo	16.13 ± 3.48	18.20 ± 0.92	0.094 (0.16)	0.079 (0.18)	0.846 (0.002)

Data are provided as the mean ± standard deviation. Adjusted values for the test statistic (F) and degrees of freedom (df) are shown when inequality of variances were found between groups
Abbreviations: ES: effect size; RPE_legs: exertion perceived at the level of the legs; RPE_cardio: exertion perceived at the cardiorespiratory level; RPE_general: general perceived exertion
*: p < 0.05

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ISSN: 1550-2783

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