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International Journal of Interdisciplinary Research

Table 2 Skin blood flow by body region and body posture/motions for the knee guard condition (KG) and the control condition (unit: %)

From: Effects of wearing knee-guards on skin pressure and skin blood flow during dynamic motions

  Knee guard condition Mean Control condition Mean
Front thigh Middle knee Side knee Front calf Front thigh Middle knee Side knee Front calf
1. Standing 0 0 0 0 0 0 0 0 0 0
2. Sitting 5 ± 0a − 37 ± 1a 7 ± 0a − 6 ± 0a − 8 ± 1a − 1 ± 0a − 53 ± 2a − 2 ± 0a − 1 ± 0a − 14 ± 2a
4. Switching directions 72 ± 1d 158 ± 2c 157 ± 2d 106 ± 2c 123 ± 3c 134 ± 1c 161 ± 2bc 109 ± 1c 140 ± 2c 136 ± 2c
6. Long kicking 68 ± 2c 158 ± 3c 146 ± 3c 114 ± 2d 121 ± 4c 182 ± 19d 166 ± 4c 122 ± 2d 148 ± 2d 155 ± 3d
8. Instep kicking 54 ± 1b 147 ± 3b 113 ± 2b 80 ± 2b 98 ± 4b 114 ± 1b 157 ± 3b 103 ± 3b 101 ± 1b 119 ± 3b
10. Jumping 114 ± 3e 207 ± 6d 198 ± 5e 152 ± 5e 168 ± 4d 248 ± 5e 204 ± 4d 181 ± 3e 221 ± 3e 213 ± 3e
Total 55 ± 3 105 ± 7 110 ± 5 76 ± 4 87 ± 3 113 ± 6 103 ± 8 86 ± 5 105 ± 6 102 ± 3
P-value < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
  1. The upper cases of a,b,c,d,e represent statistically identified groups classified by Duncan test among the motions. Data are expressed as mean ± SE