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. 2021 Nov 30;18(23):12638. doi: 10.3390/ijerph182312638

Table 3.

Bioimpedance index, impedance ratio and phase angle measured for the whole body and upper and lower limbs in amateur and professional pole dancers.

Professional Pole Dancers
(n = 7)
Amateur Pole Dancers
(n = 33)
p-Value Cohen’s d
Impedance Ratio
Whole body Z 50/Z 5 kHz 0.869 ± 0.015 0.879 ± 0.014 0.079 0.70
Z 100/Z 5 kHz 0.817 ± 0.018 0.830 ± 0.016 0.072 0.76
Z 250/Z 5 kHz 0.756 ± 0.021 0.771 ± 0.018 0.058 0.77
Upper limbs Z 50/Z 5 kHz 0.875 ± 0.010 0.889 ± 0.013 <0.001 * 1.2
Z 100/Z 5 kHz 0.824 ± 0.014 0.840 ± 0.015 <0.001 * 1.1
Z 250/Z 5 kHz 0.753 ± 0.018 0.772 ± 0.018 <0.001 * 1.1
Lower limbs Z 50/Z 5 kHz 0.863 ± 0.021 0.868 ± 0.018 0.463 0.26
Z 100/Z 5 kHz 0.810 ± 0.025 0.817 ± 0.021 0.435 0.30
Z 250/Z 5 kHz 0.763 ± 0.030 0.772 ± 0.025 0.355 0.33
Phase Angle (°)
Whole body 6.37 ± 0.57 6.00 ± 0.55 0.117 0.66
Upper limbs 5.66 ± 0.56 5.19 ± 0.56 0.041 * 0.99
Lower limbs 7.11 ± 0.80 7.04 ± 0.70 0.821 0.09

Data are expressed as mean ± standard deviation. BI index—bioimpedance index calculated as height2/Z. * p < 0.05. Cohen’s d ≤ 0.2—small, 0.2 < d ≤ 0.5—small to medium, 0.5 < d ≤ 0.8—medium to large, d > 0.8—large.