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Table 2 Significant main effectsa in the training sessions with an effect size ≥ 0.02

From: Learning to use a body-powered prosthesis: changes in functionality and kinematics

Dependent variable

Within/between subject factor

Mean (SE)

95 % CI lower-upper

F

p

η 2 G

Reach time (s)

Session

1

0.96 (.04)

0.85–1.08

11.63

.00

.06

2

0.87 (.03)

0.77–0.96

3

0.85 (.03)

0.76–0.95

4

0.85 (.04)

0.75–0.95

5

0.85 (.04)

0.74–0.95

Group

COM

0.89 (.06)

0.73–1.05

4.27

.03

.26

IG

0.75 (.06)

0.59–0.91

DG

0.99 (.06)

0.82–1.16

Plateau time (s)

Group

COM

0.49 (.03)

0.41–0.57

16.71

.00

.41

IG

0.35 (.03)

0.27–0.42

DG

0.57 (.03)

0.49–0.66

Hook closing time (s)

Session

1

0.86 (.06)

0.70–1.02

20.36

.00

.20

2

0.69 (.04)

0.59–0.79

3

0.65 (.03)

0.56–0.75

4

0.61 (.03)

0.53–0.70

5

0.56 (.04)

0.45–0.68

Peak velocity hook closing (mm/s)

Session

1

134.68 (8.29)

111.10–158.26

5.19

.007

.04

2

145.19 (10.60)

115.04–175.34

3

143.83 (8.50)

119.66–168.00

4

158.27 (11.09)

126.71–189.83

5

163.21 (13.32)

125.30–201.12

Object

Solid

157.06 (10.20)

128.04–186.08

14.43

.00

.12

HO

151.27 (9.38)

124.58–177.96

MO

145.50 (9.81)

117.60–173.40

LO

142.32 (9.01)

116.69–167.95

Compression when grasping (mm)

Object

HO

0.55 (.04)

0.44–0.66

402.65

.00

.83

MO

2.47 (.11)

2.15–2.80

LO

5.02 (.19)

4.48–5.55

Compression during manipulation (mm)

Object

HO

0.93 (.07)

0.74–1.12

591.65

.00

.91

MO

5.34 (.18)

4.84–5.84

LO

7.30 (.16)

6.84–7.75

Force when grasping (N)

Group

COM

3.63 (.19)

3.24–4.03

4.21

.03

.09

IG

2.86 (.19)

2.46–3.25

DG

3.33 (.20)

2.90–3.76

Object

HO

2.14 (.15)

1.72–2.57

61.60

.00

.39

MO

3.51 (.16)

3.05–3.97

LO

4.17 (.16)

3.72–4.61

Force during manipulation (N)

Object

HO

3.66 (.26)

2.92–4.39

100.96

.00

.59

MO

7.58 (.25)

6.88–8.29

LO

6.06 (.13)

5.68–6.44

  1. SE standard error of the mean, 95% CI lower-upper 95% Confidence Interval, Lower bound and Upper bound, s second, mm millimeter, COM combination group, IG indirect grasping group, DG direct grasping group, Solid solid object, HO high-resistance object, MO moderate-resistance object, LO low-resistance object
  2. aA main effect of object shows the means per object over all sessions and all groups; in case of a main effect of session the means per session over all objects and all groups are shown, whereas a main effect of group shows the means per group over all sessions and all objects