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DC Field | Value | Language |
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dc.contributor.author | Limb, ES | - |
dc.contributor.author | Ahmad, S | - |
dc.contributor.author | Cook, DG | - |
dc.contributor.author | Kerry, SM | - |
dc.contributor.author | Ekelund, U | - |
dc.contributor.author | Whincup, PH | - |
dc.contributor.author | Victor, CR | - |
dc.contributor.author | Iliffe, S | - |
dc.contributor.author | Ussher, M | - |
dc.contributor.author | Fox-Rushby, J | - |
dc.contributor.author | Furness, C | - |
dc.contributor.author | Ibison, J | - |
dc.contributor.author | Dewilde, S | - |
dc.contributor.author | Harris, T | - |
dc.date.accessioned | 2019-02-05T13:11:15Z | - |
dc.date.available | 2019-01-22 | - |
dc.date.available | 2019-02-05T13:11:15Z | - |
dc.date.issued | 2019-01-22 | - |
dc.identifier.citation | The international journal of behavioral nutrition and physical activity, 2019, 16 (10), pp. 1 - 11 | en_US |
dc.identifier.issn | http://dx.doi.org/10.1186/s12966-018-0762-5 | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/17460 | - |
dc.description.abstract | Background: Few trials have compared estimates of change in physical activity (PA) levels using self-reported and objective PA measures when evaluating trial outcomes. The PACE-UP trial offered the opportunity to assess this, using the self-administered International Physical Activity Questionnaire (IPAQ) and waist-worn accelerometry. Methods: The PACE-UP trial (N=1023) compared usual care (n=338) with two pedometer-based walking interventions, by post (n=339) or with nurse support (n=346). Participants wore an accelerometer at baseline and 12months and completed IPAQ for the same 7-day periods. Main outcomes were weekly minutes, all in ≥10min bouts as per UK PA guidelines of: i) accelerometer moderate-to-vigorous PA (Acc-MVPA) ii) IPAQ moderate+vigorous PA (IPAQ-MVPA) and iii) IPAQ walking (IPAQ-Walk). For each outcome, 12month values were regressed on baseline to estimate change. Results: Analyses were restricted to 655 (64%) participants who provided data on all outcomes at baseline and 12 months. Both intervention groups significantly increased their accelerometry MVPA minutes/week compared with control: postal group 42 (95% CI 22, 61), nurse group 43 (95% CI 24, 63). IPAQ-Walk minutes/week also increased: postal 57 (95% CI 2, 112), nurse 43 (95% CI -11, 97) but IPAQ-MVPA minutes/week showed non-significant decreases: postal -11 (95% CI -65, 42), nurse -34 (95% CI -87, 19). Conclusions: Our results demonstrate the necessity of using a questionnaire focussing on the activities being altered, as with IPAQ-Walk questions. Even then, the change in PA was estimated with far less precision than with accelerometry. Accelerometry is preferred to self-report measurement, minimising bias and improving precision when assessing effects of a walking intervention. | en_US |
dc.format.extent | 1 - 11 | - |
dc.language.iso | en | en_US |
dc.publisher | BMC | en_US |
dc.subject | Walking | en_US |
dc.subject | Intervention | en_US |
dc.subject | Primary care | en_US |
dc.subject | MVPA | en_US |
dc.subject | Accelerometry | en_US |
dc.subject | IPAQ | en_US |
dc.subject | GPPAQ | en_US |
dc.title | Measuring change in trials of physical activity interventions: a comparison of self-report questionnaire and accelerometry within the PACE-UP trial | en_US |
dc.type | Article | en_US |
dc.identifier.doi | http://dx.doi.org/10.1186/s12966-018-0762-5 | - |
dc.relation.isPartOf | The international journal of behavioral nutrition and physical activity | - |
pubs.issue | 10 | - |
pubs.publication-status | Published | - |
pubs.volume | 16 | - |
Appears in Collections: | Dept of Health Sciences Research Papers |
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