Table 3.

Comparative analysis of kinematic variables during the first and last runs of the 2 high-intensity intermittent training protocols (mean ± SD).

Variable	10 × 400 m protocol		p	95%CI	40 × 100 m protocol		p	95%CI
	1st run	10th run			1st run	40th run
Spatial-temporal parameters
Contact time (s)	0.19 ± 0.02	0.18 ± 0.02	0.059	−0.01 to 0.02	0.17 ± 0.02	0.16 ± 0.02	0.159	−0.01 to 0.02
Flight time (s)	0.15 ± 0.01	0.14 ± 0.02	0.588	−0.01 to 0.01	0.13 ± 0.01	0.13 ± 0.02	0.904	−0.01 to 0.01
Step length (m)	1.55 ± 0.15	1.56 ± 0.14	0.498	−0.07 to 0.04	1.61 ± 0.17	1.58 ± 0.17	0.325	−0.09 to 0.03
Joint angles (°)
Initial contact
θhip	150.51 ± 6.00	151.54 ± 6.33	0.341	−3.31 to 1.24	146.41 ± 4.51	145.56 ± 5.83	0.620	−2.72 to 4.40
θknee	160.83 ± 6.04	156.86 ± 9.37	0.066	−0.32 to 8.26	163.04 ± 5.12	160.16 ± 5.71	0.067	−0.22 to 5.97
θankle	117.49 ± 6.25	117.73 ± 5.79	0.847	−3.02 to 2.53	126.18 ± 8.19	125.46 ± 6.69	0.756	−4.24 to 5.68
Midstance
θhip	155.75 ± 4.53	156.72 ± 5.70	0.166	−2.39 to 0.46	155.44 ± 4.98	153.56 ± 7.27	0.283	−1.71 to 5.46
θknee	140.78 ± 5.58	140.38 ± 6.05	0.759	−2.41 to 3.22	146.27 ± 5.49	145.64 ± 6.02	0.668	−2.45 to 3.71
θankle	101.77 ± 5.11	101.44 ± 6.79	0.813	−2.77 to 3.44	110.67 ± 6.74	112.03 ± 6.18	0.487	−5.58 to 2.85
Toe-off
θhip	161.20 ± 6.67	161.29 ± 6.23	0.868	−1.33 to 1.13	193.13 ± 10.12	195.82 ± 6.25	0.324	−8.30 to 2.92
θknee	163.73 ± 6.22	163.64 ± 5.94	0.941	−2.54 to 2.73	161.88 ± 5.20	159.58 ± 4.36	0.106	−0.55 to 5.17
θankle	136.49 ± 6.39	137.80 ± 6.75	0.613	−6.87 to 4.26	139.18 ± 5.96	139.13 ± 5.78	0.977	−3.66 to 3.77

Abbreviations: CI = confidence interval; θ = joint angle.