Table 2.

Onset Times of Muscle Activity for the No-Vision Condition

Muscle	Trial 1, sa (Mean ± SD)	Trial 4, sa (Mean ± SD)	tb	Pc	Mean Difference	Standard Error of the Difference	Lower and Upper Limits of Agreement
Control Group (n = 20)
Peroneus longus	−0.09 (0.42)	−0.17 (0.23)	−1.13	0.44	−0.15	0.03	−0.22, −0.08
Tibialis anterior	−0.14 (0.4)	−0.18 (0.22)	−0.47	0.74	−0.10	0.03	−0.17, −0.04
Vastus medialis obliquus of the quadriceps femoris	−0.11 (0.44)	−0.19 (0.41)	−0.94	0.56	−0.14	0.06	−0.24, 0.05
Vastus lateralis of the quadriceps femoris	−0.17 (0.47)	−0.16 (0.5)	−0.73	0.96	−0.11	0.07	−0.25, 0.03
Tensor fasciae latae	−0.1 (0.39)	−0.08 (0.43)	−1.43	0.52	−0.03	0.08	−0.19, 0.14
Gluteus medius	−0.13 (0.2)	−0.17 (0.2)	−1.03	0.53	−0.04	0.04	−0.12, 0.04
Gluteus maximus	0.04 (0.25)	−0.12 (0.25)	−4.11	0.08	−0.14	0.03	−0.21, −;0.07
Chronic Ankle Instability Group (n = 20)
Peroneus longus	0.5 (0.49)	0.48 (0.58)	0.30b	0.93	−0.03	0.11	−0.22, 0.26
Tibialis anterior	0.6 (0.5)	0.43 (0.45)	−1.45b	0.29	−0.11	0.10	−0.32, 0.10
Vastus medialis obliquus of the quadriceps femoris	0.24 (0.62)	0.19 (0.52)	−0.11d	0.8	0.07	0.09	−0.13, 0.27
Vastus lateralis of the quadriceps femoris	0.09 (0.71)	0.16 (0.56)	0.62d	0.76	0.20	0.06	0.07, 0.33
Tensor fasciae latae	0.31 (0.57)	0.43 (0.75)	3.25b	0.68	−0.005	0.09	−0.02, 0.19
Gluteus medius	0.16 (0.24)	0.23 (0.3)	1.56b	0.33	0.09	0.05	−0.03, 0.20
Gluteus maximus	0.32 (0.38)	0.54 (0.59)	1.35e	0.2	0.04	0.10	−0.16, 0.24

^a A negative value for the onset of muscle activity indicates an increase in muscle activity before the beginning of the transition.

^b Indicates df = 19.

^c The α level was set at .05.

^d Indicates df = 18.

^e Indicates df = 17.