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Table 3 Mean ± SD for questionnaire and accelerometer assessed sedentary time, walking and MVPA and their differences

From: Using open source accelerometer analysis to assess physical activity and sedentary behaviour in overweight and obese adults

  Sedentary (mins/day)   Walking (mins/day)   MVPA (mins/day)  
Questionnaire Acca Mean difference (Limits of agreement) p Questionnaire Acc Mean difference (Limits of agreement) p Questionnaire Acc Mean difference (Limits of agreement) p
BMI Normal 476 ± 84 597 ± 67 − 121 (− 227 to 35) < 0.001 56 ± 29 42 ± 27 14 (−53 to 61) < 0.001 125 ± 23 103 ± 19 21 (−33 to 56) < 0.001
Overweight 545 ± 91 704 ± 73 − 159 (− 345 to 27) < 0.001 95 ± 27 77 ± 21 18 (−45 to 61) < 0.001 121 ± 27 100 ± 21 20 (−43 to 63) < 0.001
Obese 628 ± 83 823 ± 94 −195 (− 394 to 5) < 0.001 96 ± 23 77 ± 19 19 (−36 to 54) < 0.001 70 ± 29 44 ± 27 25 (−52 to 63) < 0.001
BIA Average 422 ± 78 521 ± 86 −99 (− 283 to 85) < 0.001 102 ± 27 83 ± 25 19 (−43 to 62) < 0.001 133 ± 27 121 ± 25 19 (−41 to 65) < 0.001
High 532 ± 69 638 ± 98 − 106 (− 325 to 114) < 0.001 78 ± 32 61 ± 28 17 (−56 to 70) < 0.001 111 ± 32 82 ± 28 29 (−54 to 72) < 0.001
Obese 656 ± 73 798 ± 102 −142 (− 388 to 104) < 0.001 43 ± 36 37 ± 29 14 (−67 to 74) < 0.001 48 ± 36 24 ± 29 24 (− 66 to 75) < 0.001
WHR Normal 457 ± 82 560 ± 60 − 103 (− 251 to 46) < 0.001 130 ± 22 123 ± 17 7 (−31 to 54) 0.067 169 ± 22 158 ± 17 11 (−27 to 58) 0.058
Overweight 601 ± 78 644 ± 72 −43 (− 207 to 121) < 0.001 78 ± 24 71 ± 21 7 (−40 to 54) 0.063 101 ± 24 92 ± 21 9 (−38 to 56) 0.064
Obesity 712 ± 82 845 ± 97 −133 (− 307 to 41) < 0.001 55 ± 25 50 ± 28 5 (−45 to 55) 0.057 82 ± 25 65 ± 28 12 (−43 to 56) 0.052
  1. a Abbreviations: Acc, accelerometer. Limits of Agreement expressed as the mean difference between methods ±1.96SD
  2. Non-significant P values are shown in bold