Table 2.

Kinetic and kinematic differences between Caffeine and Placebo conditions in the bilateral CMJ.

	Placebo		Caffeine				CI 95%
	Mean	SD	Mean	SD	p	ES	Lower Limit	Upper Limit
Conc MF/BM [N/kg]	18.28	1.87	18.60	2.12	0.185	0.23	−0.27	0.72
Conc MF [N]	1251.44	176.15	1286.00	207.14	0.094	0.35	−0.17	0.85
Conc PF/BM [N/kg]	22.47	2.99	22.74	2.97	0.337	0.11	−0.39	0.60
Conc PF [N]	1551.09	279.07	1577.66	268.33	0.291	0.14	−0.35	0.63
Conc M Power/BM [W/kg]	23.39	4.85	24.18	5.46	0.131	0.29	−0.21	0.79
Conc M Power [W]	1617.31	395.33	1678.03	436.53	0.099	0.34	−0.17	0.84
FT [ms]	471.34	62.33	481.59	64.08	0.008	0.69	0.13	1.23
CT [ms]	888.47	145.83	843.78	157.71	0.123	−0.30	−0.80	0.20
FT:CT	0.55	0.12	0.60	0.15	0.029	0.52	−0.01	1.03
JH (Flight Time) [cm]	27.68	7.20	28.91	7.72	0.008	0.68	0.13	1.22
JH (Imp-Mom) [cm]	27.08	7.69	27.88	8.24	0.059	0.42	−0.10	0.92
P Power/BM [W/kg]	42.44	8.89	43.20	9.15	0.162	0.25	−0.25	0.75
P Power [W]	2927.97	676.85	3003.44	719.17	0.049	0.44	−0.08	0.95
Conc Dur [ms]	280.56	41.71	272.84	42.46	0.255	−0.17	−0.66	0.33
Conc Impulse [Ns]	158.16	32.33	160.99	32.62	0.018	0.58	0.04	1.10
Conc P Vel [m/s]	2.42	0.30	2.44	0.32	0.103	0.33	−0.18	0.83
Conc RFD/BM [N/s/kg]	21.56	15.32	20.84	17.01	0.458	−0.03	−0.52	0.46
Conc RFD [N/s]	1477.09	1004.82	1462.13	1319.38	0.487	−0.01	−0.50	0.48
Conc RPD/BM [W/s/kg]	205.20	62.70	216.72	77.21	0.224	0.20	−0.30	0.69
Conc RPD [W/s]	9223.37	4015.93	9223.37	5039.08	0.176	0.24	−0.26	0.73
F at P Power [N]	1325.75	167.75	1344.66	190.93	0.174	0.24	−0.26	0.74
RSI-modified [m/s]	0.32	0.10	0.36	0.13	0.011	0.64	0.09	1.17
Vel at P Power [m/s]	2.19	0.27	2.21	0.28	0.133	0.29	−0.22	0.79
Braking Phase Dur [s]	0.40	0.12	0.35	0.12	0.079	−0.37	−0.87	0.14
Ecc Braking RFD/BM [N/s/kg]	46.94	25.81	56.19	32.13	0.050	0.44	−0.08	0.95
Ecc Braking RFD [N/s]	3165.69	1524.04	3837.63	1964.34	0.057	0.42	−0.10	0.93
Ecc Dec Phase Dur [s]	0.21	0.07	0.19	0.07	0.113	−0.32	−0.81	0.19
Ecc Dec RFD/BM [N/s/kg]	67.97	37.59	76.19	43.57	0.170	0.25	−0.26	0.74
Ecc Dec RFD [N/s]	4615.25	2469.22	5204.31	2654.83	0.181	0.24	−0.27	0.73
Ecc M Braking F [N]	773.57	104.06	804.16	106.54	0.045	0.46	−0.07	0.96
Ecc M Dec F [N]	1048.35	184.63	1083.10	182.31	0.212	0.21	−0.29	0.70
Ecc MF [N]	679.09	88.73	682.41	87.73	0.110	0.32	−0.19	0.82
Ecc M Power/BM [W/kg]	4.91	0.82	4.91	0.99	0.494	0.00	−0.49	0.49
Ecc M Power [W]	340.72	80.21	339.31	71.94	0.479	−0.01	−0.50	0.48
Ecc PF/BM [N/kg]	20.94	3.28	21.53	3.57	0.252	0.17	−0.33	0.66
Ecc PF [N]	1448.81	309.19	1489.75	272.38	0.285	0.15	−0.35	0.64
F at Zero Vel [N]	1447.72	310.12	1486.53	270.77	0.294	0.14	−0.36	0.63

Bolded p values denote significant differences between conditions (p < 0.05). BM = Body mass; Conc MF = concentric mean force; Conc PF = concentric peak force; Conc M power = concentric mean power; FT = Flight time; CT = Contraction time; FT:CT = ratio between flight time and contraction time; JH = Jump height; P power = concentric peak power; Conc Dur = duration of the concentric phase; Conc P Vel = concentric peak velocity; Conc RFD = concentric rate of force development; Conc RPD = concentric rate of power development; F at P Power = Force at peak power; RSI-mod = Reactive strength index-modified; Vel at P Power = Velocity at peak power; Braking phase dur= braking phase duration; Ecc Braking RFD = rate of force development during braking phase; Ecc Dec Phase Dur = Duration of the eccentric deceleration phase; Ecc Dec RFD = rate of force development during deceleration phase; Ecc M Braking F = mean force during braking phase; Ecc M Dec F= mean force during deceleration phase; Ecc MF = Eccentric mean force; Ecc M Power = Eccentric mean power; Ecc PF = Eccentric peak force; F at Zero Vel = Force at zero velocity.