Skip to main content

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.