Table 2 Mean energy expenditure for each activity and mean difference (kcal.min ⁻¹ ) between methods (kcal.min ⁻¹ )

Adults

Rest

NA

1.27 ± 0.28

1.09 ± 0.15

0.19 ± 0.27*

1.21 ± 0.16

0.04 ± 0.24

1.07 ± 0.45

0.22 ± 0.42

Walk (overground)

4.2 ± 1.2 km.h⁻¹

6.69 ± 2.04

6.88 ± 1.60

−0.19 ± 2.24

7.52 ± 2.25

−0.85 ± 2.32

5.04 ± 1.14

1.78 ± 2.22*

Treadmill walking

1.0 km.h⁻¹

3.14 ± 0.84

5.32 ± 2.48

−2.13 ± 1.97*

2.14 ± 0.54

0.99 ± 0.48*

2.72 ± 1.17

0.40 ± 1.05

Treadmill walking

1.0 km.h⁻¹ at 5% incline

3.45 ± 0.85

6.09 ± 2.72

−2.64 ± 2.19*

2.08 ± 0.43

1.38 ± 0.67*

2.59 ± 1.09

0.91 ± 1.06

Treadmill walking

2.0 km.h⁻¹

3.90 ± 0.93

5.28 ± 2.89

−1.38 ± 2.64

3.13 ± 0.96

0.77 ± 1.18

3.22 ± 0.80

0.78 ± 1.07

Treadmill walking

4.0 km.h⁻¹

5.10 ± 1.21

6.07 ± 1.97

−0.89 ± 2.09

4.98 ± 0.93

0.12 ± 0.83

4.48 ± 1.48

0.62 ± 1.90

Children

Rest

NA

1.06 ± 0.33

0.79 ± 0.28

0.28 ± 0.30*

1.03 ± 0.19

0.04 ± 0.25

1.49 ± 0.81

−0.43 ± 0.76

Walk (overground)

3.6 ± 1.3 km.h⁻¹

4.56 ± 1.47

4.39 ± 1.89

0.17 ± 1.54

4.33 ± 1.64

0.23 ± 0.92

3.92 ± 1.46

0.64 ± 1.74

Treadmill walking

1.0 km.h⁻¹

2.52 ± 0.82

2.67 ± 1.00

−0.03 ± 0.71

1.79 ± 0.46

0.73 ± 0.47*

2.50 ± 0.58

0.02 ± 0.78

Treadmill walking

1.0 km.h⁻¹ at 5% incline

2.73 ± 1.08

3.50 ± 2.04

−0.63 ± 1.43

1.86 ± 0.52

0.87 ± 0.61*

2.32 ± 0.91

0.41 ± 1.25

Treadmill walking

2.0 km.h⁻¹

3.11 ± 1.29

3.57 ± 1.56

−0.28 ± 1.31

2.20 ± 0.71

0.91 ± 0.70*

2.83 ± 0.69

0.28 ± 1.10