Effects of acute ingestion of caffeinated chewing gum on performance in elite judo athletes

Table 2 Performance and physiological variables with ingestion of two non-caffeinated chewing gum (P + P), a caffeinated chewing gum and a placebo chewing gum (C + P; 2.7 mg/kg of caffeine) and two caffeinated chewing gums (C + C; 5.4 mg/kg of caffeine) before executing two repetitions of the Special Judo Fitness Test (SJFT)

Variables		P + P	C + P	C + C	Substance	Time	Interaction
Throws [n]	SJFT-1	29.44 ± 1.94	31 ± 2	30 ± 2.24	0.063	0.111	0.447
Throws [n]	SJFT-2	30.22 ± 2.33	31.22 ± 2.44	30.22 ± 1.99	0.063	0.111	0.447
SJFT index [%]	SJFT-1	11.55 ± 0.83	11.01 ± 1.1	11.77 ± 2.14	0.099	0.193	0.961
SJFT index [%]	SJFT-2	11.30 ± 0.92	10.82 ± 0.95	11.50 ± 1.35	0.099	0.193	0.961
Rate of perceived exertion [arbitrary units]	SJFT-1	17.89 ± 1.36	17.44 ± 2.46	17.22 ± 1.3	0.538	0.153	0.896
Rate of perceived exertion [arbitrary units]	SJFT-2	17.44 ± 1.81	16.67 ± 1.87	16.56 ± 2.19	0.538	0.153	0.896
Blood lactate concentration [mmol/L]	SJFT-1	13.53 ± 2.46	15.1 ± 1.97	14.03 ± 2.85	0.098	0.869	0.223
Blood lactate concentration [mmol/L]	SJFT-2	13.29 ± 2.44	14.66 ± 2.3	14.93 ± 3.6	0.098	0.869	0.223
Heart rate [bpm]	SJFT-1	192 ± 14	193 ± 17	191 ± 18	0.971	0.525	0.782
Heart rate [bpm]	SJFT-2	189 ± 12	190 ± 15	191 ± 13	0.971	0.525	0.782

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