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"Booster" interventions to sustain increases in physical activity in middle-aged adults in deprived urban neighbourhoods: internal pilot and feasibility study
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Scott, Emma, Dimairo, Munyaradzi, Hind, D. (Daniel), Goyder, Elizabeth, Copeland, Robert, Breckon, Jeff D., Crank, Helen, Walters, Stephen John, Loban, Amanda and Cooper, Cindy L. (2011) "Booster" interventions to sustain increases in physical activity in middle-aged adults in deprived urban neighbourhoods: internal pilot and feasibility study. BMC Public Health, Volume 11 (Number 1). Article number 129. doi:10.1186/1471-2458-11-129 ISSN 1471-2458.
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Official URL: http://dx.doi.org/10.1186/1471-2458-11-129
Abstract
Background:
Systematic reviews have identified a range of brief interventions which increase physical activity in previously sedentary people. A randomised controlled trial is needed to assess whether providing motivational interviewing, three months after giving initial advice, sustains physical activity levels in those who recently became physically active. This paper reports the results of an internal pilot study designed to test the feasibility of the study in terms of recruitment, per protocol delivery of the intervention and retention at three months.
Methods:
Participants were: aged 40-64 years; resident in deprived areas of Sheffield, UK; and, had recently become physically active as a result of using a brief intervention following an invitation from a mass mailout. Interventions: Motivational Interviewing 'boosters' aimed at sustaining change in physical activity status delivered face-to-face or over the telephone compared with no further intervention. Outcomes of the feasibility study: recruitment of 60 participants from mailout of 3,300; retention of 45 participants with 3-month follow-up accelerometry measurements; 70% of those randomised to boosters receiving intervention per protocol. Sample size and power were recalculated using the accelerometry data collected.
Results:
Forty-seven participants were randomised (78% of the feasibility target); 37 participants were retained at three months, 29 with at least four days of accelerometry data (64% of the feasibility target); 79% of those allocated boosters received them per protocol (surpassing the feasibility target). The proposed sample size of 600 was confirmed as appropriate and power is expected to be sufficient to detect a difference between groups.
Conclusions:
The main study will continue with the original recruitment target of 600 participants but to ensure feasibility, it is necessary to increase recruitment and improve the numbers of those followed-up who have evaluable data. Strategies will include increasing the number of initial invitations sent out and improving the training of research assistants and participants in the positioning of the accelerometer.
Item Type: | Journal Article | ||||
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Subjects: | R Medicine > RA Public aspects of medicine R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine |
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Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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Library of Congress Subject Headings (LCSH): | Health behavior -- Great Britain, Health behavior -- Age factors -- Great Britain, Exercise therapy for older people -- Great Britain, Clinical trials -- Great Britain | ||||
Journal or Publication Title: | BMC Public Health | ||||
Publisher: | BioMed Central Ltd. | ||||
ISSN: | 1471-2458 | ||||
Official Date: | 2011 | ||||
Dates: |
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Volume: | Volume 11 | ||||
Number: | Number 1 | ||||
Page Range: | Article number 129 | ||||
DOI: | 10.1186/1471-2458-11-129 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Date of first compliant deposit: | 25 December 2015 | ||||
Date of first compliant Open Access: | 25 December 2015 | ||||
Funder: | National Institute for Health Research (Great Britain) (NIHR) | ||||
Grant number: | HTA 07/25/02 (NIHR) | ||||
Version or Related Resource: | Hind, D., et al. (2010) A randomised controlled trial and cost-effectiveness evaluation of "booster" interventions to sustain increases in physical activity in middle-aged adults in deprived urban neighbourhoods. BMC Public Health, Volume 10 (Number 1). Article number 3. http://wrap.warwick.ac.uk/id/eprint/57554 | ||||
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