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Table 4 Acceleration-based values from the T phase ( N= 30)

From: Differences in trunk accelerometry between frail and non-frail elderly persons in functional tasks

  Frail (n = 14) Non-frail (n = 16) U d p-Value
  Median (IQR) Median (IQR)    
t.stopwatch (s) 10.42 (7.64 / 14.53) 1.83 (1.46 / 2.12) 2.000 1.441 <0.001
x.acc.min (m/s2) -1.86 (-2.89 / -1.25) -5.62 (-7.85 / -4.23) 41.00 2.014 0.003
y.acc.max (m/s2) 2.01 (1.47 / 2.87) 7.72 (4.64 / 9.74) 26.50 -2.629 <0.001
y.acc.min (m/s2) -1.62 (-3.14 / -1.18) -6.01 (-11.77 / -4.92) 14.00 1.503 <0.001
z.acc.min (m/s2) -1.52 (-2.89 / -0.44) -6.80 (-9.65 / -4.97) 35.00 2.604 <0.001
z.acc.mean (m/s2) -0.08 (-1.29 / 0.93) -2.57 (-3.84 / -1.89) 36.00 1.830 0.002
rv.acc.max ( m/s2) 3.48 (2.65 / 4.82) 10.34 (8.30 / 13.08) 41.00 -1.782 0.003
rv.acc.min ( m/s2) 0.39 (0.20 / 0.67) 1.23 (0.69 / 2.05) 38.00 -0.930 0.002
  1. x, x axis; y, y axis; z, z axis; acc, acceleration; t, time; max, maximum; min, minimum; rv, resultant vector; U, U-Mann–Whitney; T, Turn; d, Cohen’s d; IQR, interquartil range (percentil 25% / percentil 75%).