Skip to main content
. 2020 Aug 14;7(8):95. doi: 10.3390/children7080095

Table 3.

Descriptive results of study variables between pre-test and post-test (N = 60).

Variables Groups Pre-test,
M ± SD
Post-test,
M ± SD
Post–Pre,
M (%)
p (Group × Time) d
Muscular
strength (SLJ)
Freestyle RS 161.50 ± 20.96 170.05 ± 21.51 8.55 (5.29) <0.001 0.40
Traditional JP 161.25 ± 26.05 165.75 ± 21.78 4.50 (2.79) 0.20
Control 170.25 ± 32.36 166.60 ± 32.57 −3.65 (−2.14) 0.11
Muscular
strength (RHG)
Freestyle RS 20.27 ± 5.84 22.76 ± 6.27 2.49 (12.28) <0.001 0.41
Traditional JP 19.45 ± 4.69 21.67 ± 5.28 2.22 (11.41) 0.44
Control 21.24 ± 7.12 15.65 ± 5.32 −5.59 (−26.32) 0.88
Muscular
strength (LHG)
Freestyle RS 18.69 ± 6.35 21.20 ± 5.50 2.50 (13.38) <0.001 0.42
Traditional JP 19.12 ± 5.44 20.80 ± 5.36 1.68 (8.79) 0.31
Control 21.23 ± 5.47 13.20 ± 5.01 −8.03 (−37.82) 1.53
Flexibility Freestyle RS 2.97 ± 10.19 7.85 ± 7.12 4.87 (163.97) <0.01 0.55
Traditional JP 5.35 ± 4.26 6.42 ± 6.59 1.07 (20.00) 0.19
Control −0.15 ± 6.97 0.80 ± 5.72 0.95 (633.30) 0.14
Body composition (WC) Freestyle RS 69.00 ± 7.45 68.93 ± 6.05 −0.07 (−0.10) <0.05 0.01
Traditional JP 62.80 ± 8.32 67.75 ± 7.51 4.95 (7.88) 0.84
Control 66.35 ± 8.92 64.25 ± 13.39 −2.10 (−3.17) 0.18
BMD Freestyle RS 0.42 ± 0.09 0.45 ± 0.09 0.03 (7.14) >0.05 0.33
Traditional JP 0.40 ± 0.08 0.40 ± 0.08 0.00 (0.00) 0.00
Control 0.43 ± 0.09 0.42 ± 0.08 −0.01 (−2.33) 0.11

Note. Each group included twenty participants; d = Cohen’s d; Freestyle RS = freestyle rope skipping; Traditional JR = traditional jump rope; SLJ = standing long jump; RHG = right-hand grip; LHG = left-hand grip; WC = waist circumference; BMD = bone mineral density.