Table 2. Gender and fatigue effects on the kinematic and GRF parameters (males n = 28; females n = 29; total sample n = 57 recreational runners).

	Pre-fatigue			Fatigue
	Males	Females	95% CI	Males	Females	95% CI
GRF (BW)
Impact peak force	1.91 ± 0.31	1.95 ± 0.31d	−0.12 to 0.03	1.88 ± 0.32	1.90 ± 0.31d	−0.09 to 0.06
Active peak force	2.59 ± 0.22a	2.47 ± 0.19a	0.06 to 0.16	2.61 ± 0.20b	2.46 ± 0.19b	0.11 to 0.19
Loading rate (BW/s)	75.02 ± 17.48a	88.14 ± 25.82a,d	−18.29 to −7.94	74.26 ± 19.90b	83.97 ± 18.83b,d	−14.24 to −5.16
Peak braking force	0.36 ± 0.09	0.38 ± 0.08	−0.03 to 0.01	0.36 ± 0.09	0.38 ± 0.07	−0.03 to −0.003
Peak propulsive force	−0.26 ± 0.04a,c	−0.28 ± 0.04a	0.004 to 0.02	−0.27 ± 0.05c	−0.28 ± 0.04	−0.01 to −0.02
KINEMATICS
Knee angles (°)
FS	7.37 ± 5.18a	12.96 ± 5.71a	−7.17 to −4.00	7.42 ± 4.57b	13.11 ± 5.97b	−7.22 to −4.14
TO	−12.04 ± 6.33a	−13.97 ± 4.70a	−3.56 to −0.29	−11.52 ± 5.59b	−14.56 ± 6.49b	−4.79 to −1.28
FC	36.89 ± 6.38a	41.48 ± 4.54a	−6.20 to −2.98	36.57 ± 5.29b	41.39 ± 5.53b	−6.38 to −3.26
Ankle angles (°)
FS	9.97 ± 4.93a	14.24 ± 4.98a,d	−5.77 to −2.78	10.39 ± 4.26b	12.65 ± 6.21b,d	−3.87 to −0.63
TO	−19.23 ± 4.12a,c	−13.96 ± 3.28a	−6.36 to −4.17	−18.26 ± 5.31b,c	−13.57 ± 4.60b	−6.14 to −3.23
FC	19.71 ± 3.19a	23.07 ± 3.20a	−4.26 to −2.45	20.15 ± 3.80b	22.67 ± 4.46b	−3.69 to −1.35

Notes.

GRF

Ground Reaction Forces

BW

Body Weight

FS

Foot Strike

TO

Toe-Off

FC

Full Contact

^aSignificant differences between males and females in the pre-fatigue condition.

^bSignificant differences between males and females in the fatigue condition.

^cSignificant differences between the pre-fatigue and fatigue conditions in males.

^dSignificant differences between the pre-fatigue and fatigue conditions in females.

The statistical significance was defined as p ≤ 0.05.