Table 2.

Postural sway measures

Postural parameters	Normal weight n = 15	Overweight n = 15	Obese n = 15
Vision
CoP speed (cm/s)	0.70 ± 0.16 [0.47–0.93]	0.85 ± 0.21 [0.54–1.21]	0.99 ± 0.29 [0.58–1.49]†
ML range (cm)	0.82 ± 0.37 [0.35–1.85]	0.85 ± 0.28 [0.51–1.45]	0.96 ± 0.46 [0.41–1.87]
AP range (cm)	1.59 ± 0.43 [0.98–2.36]	1.84 ± 0.58 [0.86–2.86]	1.87 ± 0.39 [1.25–2.60]
Mean distance (cm)	0.27 ± 0.07 [0.19–0.42]	0.31 ± 0.08 [0.20–0.43]	0.33 ± 0.10 [0.21–0.52]†
Mean peaks (s)	2.50 ± 0.56 [1.87–3.54]	2.21 ± 0.48 [1.56–3.10]	1.92 ± 0.44 [1.32–2.88]†
No vision
CoP speed (cm/s)	0.87 ± 0.23 [0.56–1.30]*	1.08 ± 0.31 [0.55–1.60]*	1.43 ± 0.50 [0.75–2.42]*†§
ML range (cm)	0.88 ± 0.31 [0.51–1.66]	0.92 ± 0.29 [0.52–1.54]	1.27 ± 0.77 [0.47–3.05]*†
AP range (cm)	1.81 ± 0.44 [1.23–2.49]*	2.11 ± 0.53 [1.12–3.16]*	2.31 ± 0.55 [1.46–3.11]*†
Mean distance (cm)	0.33 ± 0.09 [0.22–0.48]*	0.37 ± 0.09 [0.20–0.53]*	0.46 ± 0.13 [0.28–0.67]*†§
Mean peaks (s)	2.15 ± 0.53 [1.44–3.17]*	1.85 ± 0.49 [1.24–2.87]*	1.47 ± 0.40 [0.90–2.19]*†§

Values are expressed by mean ± SD [min–max]

ML mediolateral, AP anteroposterior

^* p < 0.05, significantly different between vision and no vision

^† p < 0.05, significantly different between normal weight and obese groups

^§ p < 0.05, significantly different between overweight and obese groups