[Retracted] Application of Biomechanics Based on Intelligent Technology and Big Data in Physical Fitness Training of Athletes

Table 2

Time index of ground reaction force during the sprint acceleration phase.

	Speed up phase	Maximum speed phase	Deduction	value
Braking period duration	32.2 ± 8.4	43.1 ± 3.2	−10.9 ± 8.2	<0.001
Propeller duration	67.8 ± 18.4	56.9 ± 3.2	−10.9 ± 8.2	<0.001
Peak braking moment	9.9 ± 4.8	10.0 ± 1.8	−0.1 ± 4.6	0.847
Peak propulsion moment	72.5 ± 3.5	72.7 ± 3.5	−0.2 ± 3.9	0.822
Vertical force peak time	37.6 ± 10.9	31.2 ± 1.8	6.4 ± 6.1	0.001