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Table 1 Baseline physical activity for participants screened with a single-item only (first step) and for those screened more extensively (second step)

From: Physical activity screening to recruit inactive randomized controlled trial participants: how much is too much?

Baseline physical activity outcomes

First step screening, (n = 418)

Second step screening (n = 86)

t or χ2 test

P

Active Australia Survey:

    

Walking (min/week)

119 ± 149

162 ± 168

2.37

0.018

Moderate intensity (min/week)

38 ± 97

27 ± 63

−1.02

0.307

Vigorous intensity (min/week)

46 ± 95

44 ± 85

−0.15

0.881

Walking + moderate + vigorous intensity (min/week)

204 ± 247

234 ± 216

1.04

0.297

Achieves 150 min/week of moderate + vigorous intensity (%)

41.2

55.8

6.14

0.013

Actigraph Accelerometry:

    

Steps (number/day)

7057 ± 2314

8166 ± 2727

3.41

0.001

Moderate intensity (min/week)

157 ± 118

190 ± 140

2.61

0.031

Vigorous intensity (min/week)

4.9 ± 21.3

2.3 ± 7.3

−1.89

0.059

Moderate + vigorous intensity (min/week)

162 ± 141

192 ± 141

1.91

0.057

Achieves 150 min/week of moderate + vigorous intensity (%)

43.6

50.6

1.33

0.249