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Table 3 Baseline and change values for objectively assessed physical activity and sedentary behaviour outcomes

From: Promoting physical activity in a multi-ethnic population at high risk of diabetes: the 48-month PROPELS randomised controlled trial

  Control Walking Away Walking Away Plus Intervention effect 1c
(Walking Away vs Control)
Intervention effect 2c
(Walking Away vs Control)
  N Mean SD N Mean SD N Mean SD Difference 97.5% CI Difference 97.5% CI
Lower Upper Lower Upper
Primary outcome
 Total ambulatory activity (steps/day)a
  Baseline value 441 6885 3068 427 7264 3009 435 7353 3432       
  Change at 12 months 374 − 192 1680 319 − 2 2386 324 241 2270 264 − 70 597 547 211 882
 Change at 48 months 373 − 385 2217 303 − 312.5 2499 317 − 296 2969 91 − 282 463 121 − 290 532
Secondary outcomes
 Censored ambulatory activity (steps/day)a
  Baseline value 441 5369.5 2984.0 427 5643 2892 435 5765 3300       
  Change at 12 months 374 − 192 1633 319 − 7.0 2369 324 228 2247 240 − 90 570 531 201 861
  Change at 48 months 373 − 337 2157 303 − 285 2469 317 − 235 2916 66 − 302 433 140 − 263 542
 Time spent sedentary (min/day)a
  Baseline value 441 557.0 92.9 427 544.0 91.3 435 544.5 97.2       
  Change at 12 months 374 − 1.5 74.7 319 3.4 73.8 324 2.5 76.6 − 1.9 − 11.1 7.2 − 7.7 − 16.9 1.5
  Change at 48 months 373 − 1.4 83.9 303 13.1 81.7 317 23.9 90.3 0.1 − 10.2 10.4 4.7 − 5.7 15.1
 Time spent in light physical activity (mins/day)a
  Baseline value 441 293.3 80.7 427 310.9 85.7 435 309.0 88.9       
  Change at 12 months 374 − 7.3 52.3 319 − 10.8 58.8 324 − 7.0 58.8 0.9 − 7.4 9.3 4.4 − 4.1 13.0
  Change at 48 months 373 − 14.5 64.5 303 − 15.4 67.7 317 − 21.0 65.2 − 0.1 − 9.8 9.6 − 5.7 − 15.3 4.0
 Time spent in moderate-to-vigorous physical activity (min/day)a
  Baseline value 441 29.8 24.7 427 31.4 25.7 435 32.1 27.6       
  Change at 12 months 374 − 1.2 15.2 319 − 0.2 22.2 324 1.7 20.2 1.3 − 1.7 4.3 3.5 0.6 6.5
  Change at 48 months 373 − 2.4 19.2 303 − 2.3 23.8 317 − 1.0 24.7 0.5 − 2.8 3.7 1.6 − 1.9 5.0
 Time spent sitting or lying down (min/day)b
  Baseline value 337 549.3 111.6 333 535.7 113.3 323 545.6 115.3       
  Change at 12 months 314 − 4.8 84.2 279 10.2 84.2 289 1.6 79.3 4.3 − 10.2 18.9 − 8.4 − 22.9 6.0
  Change at 48 months 260 10.2 98.1 213 − 3.7 99.7 211 10.3 94.7 − 15.0 − 33.8 3.8 − 10.6 − 29.9 8.7
 Time spent standing (min/day)b
  Baseline value 337 288.3 95.1 333 306.7 95.4 323 294.5 100.7       
  Change at 12 months 314 − 2.8 61.6 279 − 11.1 66.3 289 − 6.8 57.7 − 6.2 − 18.5 6.1 0.3 − 11.8 12.5
  Change at 48 months 260 − 12.8 77.5 213 0.8 78.5 211 − 7.4 73.6 12.7 − 2.7 28.1 5.9 − 9.9 21.6
 Time spent stepping (mins/day) b
  Baseline value 337 106.0 38.1 333 115.3 38.5 323 111.5 43.4       
  Change at 12 months 314 − 1.4 22.8 279 0.9 29.3 289 4.8 27.3 2.4 − 2.8 7.6 8.5 3.3 13.7
  Change at 48 months 260 − 3.7 28.9 213 − 3.2 28.7 211 − 3.7 37.1 2.2 − 4.3 8.6 4.8 − 2.5 12.0
  1. aData derived from waist worn accelerometer
  2. bData derived from thigh worn accelerometer
  3. cData adjusted for wear time at baseline, waking wear time at follow-up, number of valid days at baseline, number of valid days at follow-up, randomisation stratification variables (centre, ethnicity, sex), and baseline value. Bold indicates significance at p < 0.025