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Table 2 Durations and maximum angular velocities in standing-up (SU) and sitting-down (SD)

From: Sit-stand and stand-sit transitions in older adults and patients with Parkinson’s disease: event detection based on motion sensors versus force plates

   Older subjects (n = 12) Patients with PD (n = 10)   
   Duration [s] CoV [%] Duration [s] CoV [%] t duration, CoV p
BFS SU 1.81 (0.26) 8.05 (6.83) 1.82 (0.16) 9.44 (6.97) −0.096 .925
   1.49-2.25 1.23-17.86 1.47-2.01 2.13-19.78 −0.474 .641
  SD 2.09 (0.25) 6.99 (3.32) 2.10 (0.18) 6.76 (3.21) −0.171 .866
   1.74-2.57 2.83-13.29 1.71-2.33 2.40-12.91 0.167 .869
Force plate SU 1.75 (0.31) 7.77 (4.80) 1.79 (0.19) 8.78 (7.13) −0.323 .750
   1.36-2.45 0.96-15.42 1.43-1.99 0.60-23.86 −0.397 .696
  SD 1.93 (0.40) 10.67 (5.39) 1.92 (0.19) 10.29 (6.98) 0.071 .944
   1.18-2.69 0.98-20.58 1.68-2.21 2.41-25.06 0.143 .888
   Duration [s] ωmax [deg/s] Duration [s] ωmax [deg/s] t duration, ωmax p
BFS SU Flexion 0.86 (0.15) 99.44 (13.04) 0.83 (0.07) 102.26 (17.85) 0.718 .483
   0.68-1.16 73.27-116.72 0.67-0.91 77.00-133.44 −0.428 .673
  Extension 0.95 (0.14) 85.10 (16.92) 0.99 (0.10) 68.70 (6.31) −0.853 .404
   0.76-1.24 59.99-111.83 0.80-1.15 59.87-79.18 3.108 .007*
BFS SD Flexion 0.96 (0.13) 93.85 (15.36) 1.06 (0.17) 66.13 (19.96) −1.603 .125
   0.79-1.19 67.63-124.16 0.75-1.23 37.45-101.63 3.683 .001*
  Extension 1.13 (0.18) 80.79 (13.21) 1.04 (0.11) 83.65 (22.56) 1.335 .197
   0.90-1.49 59.42-102.37 0.88-1.22 53.94-119.86 −0.370 .716
  1. Averaged total durations and corresponding coefficients of variation (CoVs) for the condition with arms crossed in front of the trunk as determined from body-fixed-sensor (BFS) and force-plate data, as well as averaged durations and maximum angular velocities (ωmax) of flexion and extension phases. Mean, standard deviation, minimum and maximum is indicated.
  2. t: two-tailed independent samples t-test, * significant difference.