Table 2.
Performance of the overall IPAQ-SF: Correlations between the objective measures and the IPAQ-SF overall physical activity levels (MET score, time spent, or novel definition by investigators) from 16 studies
| Reference | Objective standard | Objective standard unit | IPAQ-SF total activity value used (Total PA min/wk: 2 × time spent on vigorous + moderate + walking, MET min/wk: 8 × vigorous + 4 × moderate + 3.3 × walking) |
ρ | Effect size (< 0.2: negligible; 0.2 to 0.49: small; 0.5 to 0.79: moderate; ≥0.8: large) |
|---|---|---|---|---|---|
| Scheeres 2009 [18] | Actometer | Actometer score | MET min/wk | 0.33 | Small |
| Craig 2003 [17] | Accelerometer | Count | MET min/wk | 0.30 | Small |
| Dinger 2006 [25]1 | Accelerometer | Count | Total PA min/wk | 0.21 | Small |
| Vandelanotte 2005 [29] | Accelerometer | Count | Total PA min/wk | 0.38 | Small |
| Ekelund 2006 [31]2 | Accelerometer | Count | MET min/wk | 0.34 | Small |
| Kaleth 2010 [33]3 | Accelerometer | Count | Total PA min/wk | 0.33 | Small |
| Lachat 2008 [35] | Accelerometer | Count | MET min/wk | 0.21 | Small |
| Mader 2006 [36]4 | Accelerometer | Count | MET min/wk | 0.39 | Small |
| Wolin 2008 [39] | Accelerometer | Total PA min/wk# | MET min/wk | 0.26 | Small |
| Rangul 2008 [23]5 | Accelerometer | TEE | 3 categories‡ | 0.09 | Negligible |
| Kurtze 2008 [34]6 | Accelerometer | AEE | MET min/wk | 0.26 | Small |
| Macfarlane 2007 [19] | Accelerometer | MET min/wk (Freedson) | MET min/wk | 0.09 | Negligible |
| Dinger 2006 [25]1 | Accelerometer | MET min/wk (Freedson) | Total PA min/wk | 0.23 | Small |
| Ekelund 2006 [31]2 | Accelerometer | MET min/wk (Freedson) | MET min/wk | 0.30 | Small |
| Faulkner 2006 [32] | Accelerometer | Total PA min/wk | Total PA min/wk | 0.37 | Small |
| Deng 2008 [20] | Pedometer | Count | MET min/wk | 0.33 | Small |
| Dinger 2006 [25]1 | Pedometer | Count | Total PA min/wk | 0.25 | Small |
| De Cocker 2009 [30] | Pedometer | Count | Total PA min/wk | 0.28 | Small |
| Reference | Fitness measure | Objective standard unit | IPAQ-SF total activity value used | ρ | Effect size |
| Papathanasiou 2010 [37] | Treadmill | Maximum time endured | Total PA min/wk | 0.36 | Small |
| Kaleth 2010 [33]3 | 6-min walk test | Walking distance | Total PA min/wk | 0.16 | Negligible |
| Rangul 2008 [23]5 | VO2max | ml/kg/min | 3 categories‡ | 0.32 | Small |
| Kurtze 2008 [34]6 | VO2max | ml/kg/min | MET min/wk | 0.30 | Small |
| Mader 2006 [36]4 | VO2max | ml/kg/min | MET min/wk | 0.24 | Small |
AEE: average energy expenditure
TEE: total energy expenditure
MET: metabolic equivalent task
MET min/wk (Freedson): moderate PA: 1952≤ count/min ≤5724, vigorous PA: count/min > 5724
Studies cited more than once have been identified with the same superscript number
3 categories‡: novel definition [23] of: low, moderate, high
#: Accelerometer counts were transformed to AEE, and then AEE was transformed to time spent on moderate and vigorous activity