The effects of different doses of caffeine on maximal strength and strength‐endurance in women habituated to caffeine

Table 3 Pairwise differences in bench press performance after the ingestion of a placebo (PLAC) or 3 (CAF-3) or 6 mg/kg/b.m. of caffeine (CAF-6) in women habituated to caffeine

Variable	Comparison	p	Effect size (Cohen’s d)	Relative effect [%]
1RM [kg]	PLAC vs. CAF-3	0.01	0.11 – trivial	3.5
	PLAC vs. CAF-6	< 0.01	0.28 – small	6.9
	CAF-3 vs. CAF-6	< 0.01	0.14 – trivial	3.2
REP [n]	PLAC vs. CAF-3	0.80	0.13 – trivial	4.4
	PLAC vs. CAF-6	0.17	0.33 – small	9.5
	CAF-3 vs. CAF-6	0.45	0.24 – small	6.2
TUT [s]	PLAC vs. CAF-3	0.20	0.32 – small	8.6
	PLAC vs. CAF-6	< 0.01	0.61 – moderate	17.6
	CAF-3 vs. CAF-6	0.06	0.35 - small	8.7
MP [W]	PLAC vs. CAF-3	0.94	0.04 – trivial	0.8
	PLAC vs. CAF-6	0.36	0.11 – trivial	2.4
	CAF-3 vs. CAF-6	0.56	0.07 – trivial	1.6
PP [W]	PLAC vs. CAF-3	0.84	0.06 – trivial	1.8
	PLAC vs. CAF-6	0.93	0.05 – trivial	5.1
	CAF-3 vs. CAF-6	0.63	0.13 – trivial	3.9
MV [m/s]	PLAC vs. CAF-3	0.44	0.13 – trivial	-2.2
	PLAC vs. CAF-6	0.29	0.26 – small	-2.7
	CAF-3 vs. CAF-6	0.96	0.14 – trivial	0.1
PV [m/s]	PLAC vs. CAF-3	0.98	0.00	0.1
	PLAC vs. CAF-6	0.47	0.25 – small	-1.7
	CAF-3 vs. CAF-6	0.60	0.26 small	-1.5

All data are presented as mean ± standard deviation; 1RM one-repetition maximum; REP number of performed repetitions; TUT time under tension; MP mean power output; PP peak power output; MV mean bar velocity; PV peak bar velocity

ISSN: 1550-2783