Table 2.  20-trial mean and (standard deviation) of selected GRF variables for all test subjects jumping at 2.4 Hz jumping rate.

Subject #

Sex

Mass [kg]

T1 [s]

T2 [s]

T3 [s]

P [kN]

RFD [kN/s]

RFR [kN/s]

I [Ns]

1

male

87.5

.42 (.01)

.30 (.01)

.13 (.01)

2.68 (.07)

20.15 (1.33)

15.67 (.64)

355.74 (6.18)

2

male

97

.42 (.01)

.29 (.01)

.14 (.004)

3.00 (.05)

22.12 (0.76)

18.95 (.50)

395.09 (6.35)

3

male

82

.42 (.01)

.26 (.01)

.11 (.01)

2.88 (.09)

25.60 (2.01)

19.06 (.90)

335.01 (9.99)

4

female

63

.42 (.01)

.26 (.01)

.11 (.004)

1.97 (.06)

17.05 (1.08)

13.14 (.81)

248.87 (6.35)

5

female

57.5

.42 (.01)

.31 (.01)

.15 (.01)

1.57 (.03)

10.25 (.54)

9.86 (.51)

233.21 (5.28)

6

female

52.5

.42 (.01)

.29 (.01)

.13 (.01)

1.61 (.11)

12.58 (1.73)

10.11 (1.36)

209.83 (8.40)

7

female

60

.42 (.01)

.26 (.01)

.12 (.01)

1.75 (.08)

14.58 (2.12)

12.80 (.81)

245.44 (9.86)

8

male

62

.42 (.02)

.29 (.02)

.13 (.01)

1.61 (.11)

12.58 (1.73)

10.11 (1.36)

209.83 (8.40)

9

female

68.5

.42 (.02)

.30 (.01)

.14 (.01)

1.97 (.06)

13.53 (1.06)

12.20 (1.02)

280.43 (9.24)

10

female

58.5

.42 (.01)

.26 (.01)

.12 (.01)

1.94 (.05)

15.54 (1.11)

14.57 (.66)

238.46 (9.83)

11

male

60.5

.43 (.02)

.29 (.01)

.13 (.01)

1.98 (.09)

15.02 (1.77)

12.19 (.85)

258.08 (7.28)

12

male

79

.42 (.01)

.28 (.01)

.13 (.01)

2.51 (.06)

19.59 (1.35)

16.34 (.77)

321.02 (7.61)