Table 4. Ecological validity of muscle activity during kuzushi without tsukuri performed with the judo ergometer (JERGo©) system and with uke.
Pulling arm Lifting arm
r LOA r LOA
M. deltoideus 0-30 ms .60* –154.0 ± 141.7 .79** –46.5 ± 59.2
0-50 ms .61* 2.4 ± 107.4 .68** –61.5 ± 81.5
0-100 ms .69* –148.0 ± 134.6 .62* –101.7 ± 129.7
0-200 ms .62* –124.9 ± 163.5 .69** –134.5 ± 174.6
M. biceps brachii 0-30 ms .76* 23.5 ± 62.1 .75** 91.5 ± 199.2
0-50 ms .75** 53.7 ± 82.6 .79** 122.0 ± 213.5
0-100 ms .60* 118.5 ± 141.7 .82** 96.6 ± 234.5
0-200 ms .70** 186.3 ± 146.9 .81** 64.7 ± 238.7
M. erector spinae 0-30 ms .85** 13.6 ± 76.2 .88** –40.9 ± 40.1
0-50 ms .85** 6.4 ± 78.6 .87** 171.3 ± 123.1
0-100 ms .85** 8.1 ± 72.9 .86** –35.8 ± 40.8
0-200 ms .82** 35.1 ± 79.9 .79** –2.4 ± 39.6
M. trapezius 0-30 ms .71** –142.0 ± 201.5 .45 50.7 ± 153.4
0-50 ms .71** –131.6 ± 219.0 .41 30.1 ± 196.3
0-100 ms .70** –116.8 ± 225.9 .41 –40.7 ± 230.3
0-200 ms .70** –133.0 ± 431.6 .53 –99.2 ± 230.0
r = Pearson correlation coefficient, LOA = limits of agreement,*p < 0.05,**p < 0.01.