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Table 2 Descriptive statistics (mean, SD and n) and statistical test results of the mixed design ANOVA (F, df, p-value and partial η2) for peak forces during the push phase (Fpush) and pull phase of lever propulsion (Fpull), HRW propulsion (Fpeak), heart rate (HR), gross mechanical efficiency (GME), rating of perceived exertion (RPE), stroke frequency (SF) and active time percentage (%Active) of the hand-rim group and the lever group

From: A novel push–pull central-lever mechanism reduces peak forces and energy-cost compared to hand-rim wheelchair propulsion during a controlled lab-based experiment

   

Pre

Post

Propulsion modes

Practice

Interaction

Outcome

Propulsion mode

n

Mean (SD)

Mean (SD)

F (df)

p

Partial η2

F (df)

p

Partial η2

F (df)

p††

Partial η2

Fpush (N)

PPLM

15

45 (10)

42 (10)

24.91 (1.28)

 < 0.001*

0.471

3.936 (1.28)

0.024*

0.123

1.341 (1.28)

0.257

0.046

Fpull (N)

PPLM

15

48 (15)

46 (10)

16.07 (1.28)

 < 0.001*

0.365

3.160 (1.28)

0.043*

0.101

0.932 (1.28)

0.343

0.032

Fpeak (N)

HRW

15

71 (15)

63 (21)

         

EE (W)

PPLM

14

283 (31.5)

263 (45)

7.428 (1.27)

0.006*

0.210

5.912 (1.27)

0.011*

0.174

0.221 (1.27)

0.642

0.008

 

HRW

15

328 (54.7)

298 (59)

         

GME (%)

PPLM

14

5.9 (0.91)

6.4 (1.46)

2.401 (1.27)

0.056

0.079

5.495 (1.27)

0.013*

0.164

0.003 (1.27)

0.959

 < 0.001

 

HRW

15

5.3 (1.06)

5.9 (1.33)

         

HR (BPM)

PPLM

12

104 (17.4)

97 (10)

0.263 (1.25)

0.307

0.008

12.27 (1.25)

0.002*

0.300

0.474 (1.25)

0.497

0.029

 

HRW

15

108 (19.9)

98 (10)

         

SF (1/min)

PPLM

15

52 (11.8)

49 (6.0)

1.160 (1.27)

0.146

0.041

14.01 (1.27)

 < 0.001*

0.342

4.947 (1.27)

0.035*

0.155

 

HRW

14

63 (19.6)

50 (20.9)

         

%Active

PPLM

15

75 (8.2)

86 (9.3)

597.6 (1.27)

 < 0.001*

0.957

6.63 (1.28)

0.008*

0.197

12.53 (1.28)

0.001*

0.317

 

HRW

14

33 (4.2)

31 (5.9)

         

RPE

(6–20)

PPLM

15

11.1 (2.5)

9.4 (1.7)

0.642 (1.28)

0.215

0.022

22.319 (1.28)

 < 0.001*

0.444

0.002 (1.28)

0.963

 < 0.001

 

HRW

15

11.5 (2.0)

9.9 (1.3)

         
  1. One-tailed p-value
  2. ††Two-tailed p-value
  3. *Significant on an α = 0.05 level