Skip to main content

Table 1 COP variables of two age groups’ during single-leg standing in each condition

From: Muscle co-contraction in elderly people change due to postural stability during single-leg standing

 

Young

Elderly

FR

LT

DO

FR

LT

DO

RDIST [mm]

6.04 ± 2.66

3.73 ± 1.08

2.65 ± 0.64‡‡‡

6.71 ± 3.06

6.10 ± 1.75***

3.14 ± 1.36‡‡‡§§§

TOTEX [mm]

271.31 ± 53.16

255.41 ± 49.76†††

254.51 ± 57.51‡‡

315.64 ± 26.09

302.89 ± 35.35

271.91 ± 44.10‡‡‡§§§

MVELO [mm/s]

90.44 ± 17.72

85.14 ± 16.59†††

84.84 ± 19.17‡‡

105.21 ± 8.70

100.96 ± 11.78

90.64 ± 14.70‡‡‡§§§

AREA-SD [mm2]

53.27 (40.14–82.24)

30.45 (28.28–33.32)

11.34 (6.18–16.72)‡‡‡§§§

108.69 (88.75–133.77)***

73.59 (56.74–80.91)***†††

7.96 (7.18–12.96)‡‡‡§§§

  1. Data are mean ± standard deviation or median (interquartile range)
  2. RDIST the root-mean-square (RMS) distance of COP, TOTEX the total excursion of COP, MVELO the mean velocity of COP, AREA-SD standard deviation area of COP, FR no supporting structure, LT light touch of the index finger to a supporting structure (to touch in force < 1 N), DO dependence on a supporting structure for stabilization as desired]
  3. Significant differences between the young and elderly groups are indicated by asterisks (***p < 0.017). Significant differences between the FR and LT conditions are indicated by daggers ( p < 0.05, ††† p < 0.017). Significant differences between the FR and DO conditions are indicated by double daggers (‡‡ p < 0.025, ‡‡‡ p < 0.017). Significant differences between the LT and DO conditions are indicated by section signs (§§§ p < 0.017)