TY - JOUR
T1 - Enhanced motivational interviewing for reducing weight and increasing physical activity in adults with high cardiovascular risk
T2 - the MOVE IT three-arm RCT
AU - Ismail, Khalida
AU - Stahl, Daniel
AU - Bayley, Adam
AU - Twist, Katherine
AU - Stewart, Kurtis
AU - Ridge, Katie
AU - Britneff, Emma
AU - Ashworth, Mark
AU - de Zoysa, Nicole
AU - Rundle, Jennifer
AU - Cook, Derek
AU - Whincup, Peter
AU - Treasure, Janet
AU - McCrone, Paul
AU - Greenough, Anne
AU - Winkley, Kirsty
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Background: Motivational interviewing (MI) enhanced with behaviour change techniques (BCTs) and deployed by health trainers targeting multiple risk factors for cardiovascular disease (CVD) may be more effective than interventions targeting a single risk factor. Objectives: The clinical effectiveness and cost-effectiveness of an enhanced lifestyle motivational interviewing intervention for patients at high risk of CVD in group settings versus individual settings and usual care (UC) in reducing weight and increasing physical activity (PA) were tested. Design: This was a three-arm, single-blind, parallel randomised controlled trial. Setting: A total of 135 general practices across all 12 South London Clinical Commissioning Groups were recruited. Participants: A total of 1742 participants aged 40–74 years with a ≥ 20.0% risk of a CVD event in the following 10 years were randomised. Interventions: The intervention was designed to integrate MI and cognitive–behavioural therapy (CBT), delivered by trained healthy lifestyle facilitators in 10 sessions over 1 year, in group or individual format. The control group received UC. Randomisation: Simple randomisation was used with computer-generated randomisation blocks. In each block, 10 participants were randomised to the group, individual or UC arm in a 4: 3: 3 ratio. Researchers were blind to the allocation. Main outcome measures: The primary outcomes are change in weight (kg) from baseline and change in PA (average number of steps per day over 1 week) from baseline at the 24-month follow-up, with an interim follow-up at 12 months. An economic evaluation estimates the relative cost-effectiveness of each intervention. Secondary outcomes include changes in low-density lipoprotein cholesterol and CVD risk score. Results: The mean age of participants was 69.75 years (standard deviation 4.11 years), 85.5% were male and 89.4% were white. At the 24-month follow-up, the group and individual intervention arms were not more effective than UC in increasing PA [mean 70.05 steps, 95% confidence interval (CI) –288 to 147.9 steps, and mean 7.24 steps, 95% CI –224.01 to 238.5 steps, respectively] or in reducing weight (mean –0.03 kg, 95% CI –0.49 to 0.44 kg, and mean –0.42 kg, 95% CI –0.93 to 0.09 kg, respectively). At the 12-month follow-up, the group and individual intervention arms were not more effective than UC in increasing PA (mean 131.1 steps, 95% CI –85.28 to 347.48 steps, and mean 210.22 steps, 95% CI –19.46 to 439.91 steps, respectively), but there were reductions in weight for the group and individual intervention arms compared with UC (mean –0.52 kg, 95% CI –0.90 to –0.13 kg, and mean –0.55 kg, 95% CI –0.95 to –0.14 kg, respectively). The group intervention arm was not more effective than the individual intervention arm in improving outcomes at either follow-up point. The group and individual interventions were not cost-effective. Conclusions: Enhanced MI, in group or individual formats, targeted at members of the general population with high CVD risk is not effective in reducing weight or increasing PA compared with UC. Future work should focus on ensuring objective evidence of high competency in BCTs, identifying those with modifiable factors for CVD risk and improving engagement of patients and primary care.
AB - Background: Motivational interviewing (MI) enhanced with behaviour change techniques (BCTs) and deployed by health trainers targeting multiple risk factors for cardiovascular disease (CVD) may be more effective than interventions targeting a single risk factor. Objectives: The clinical effectiveness and cost-effectiveness of an enhanced lifestyle motivational interviewing intervention for patients at high risk of CVD in group settings versus individual settings and usual care (UC) in reducing weight and increasing physical activity (PA) were tested. Design: This was a three-arm, single-blind, parallel randomised controlled trial. Setting: A total of 135 general practices across all 12 South London Clinical Commissioning Groups were recruited. Participants: A total of 1742 participants aged 40–74 years with a ≥ 20.0% risk of a CVD event in the following 10 years were randomised. Interventions: The intervention was designed to integrate MI and cognitive–behavioural therapy (CBT), delivered by trained healthy lifestyle facilitators in 10 sessions over 1 year, in group or individual format. The control group received UC. Randomisation: Simple randomisation was used with computer-generated randomisation blocks. In each block, 10 participants were randomised to the group, individual or UC arm in a 4: 3: 3 ratio. Researchers were blind to the allocation. Main outcome measures: The primary outcomes are change in weight (kg) from baseline and change in PA (average number of steps per day over 1 week) from baseline at the 24-month follow-up, with an interim follow-up at 12 months. An economic evaluation estimates the relative cost-effectiveness of each intervention. Secondary outcomes include changes in low-density lipoprotein cholesterol and CVD risk score. Results: The mean age of participants was 69.75 years (standard deviation 4.11 years), 85.5% were male and 89.4% were white. At the 24-month follow-up, the group and individual intervention arms were not more effective than UC in increasing PA [mean 70.05 steps, 95% confidence interval (CI) –288 to 147.9 steps, and mean 7.24 steps, 95% CI –224.01 to 238.5 steps, respectively] or in reducing weight (mean –0.03 kg, 95% CI –0.49 to 0.44 kg, and mean –0.42 kg, 95% CI –0.93 to 0.09 kg, respectively). At the 12-month follow-up, the group and individual intervention arms were not more effective than UC in increasing PA (mean 131.1 steps, 95% CI –85.28 to 347.48 steps, and mean 210.22 steps, 95% CI –19.46 to 439.91 steps, respectively), but there were reductions in weight for the group and individual intervention arms compared with UC (mean –0.52 kg, 95% CI –0.90 to –0.13 kg, and mean –0.55 kg, 95% CI –0.95 to –0.14 kg, respectively). The group intervention arm was not more effective than the individual intervention arm in improving outcomes at either follow-up point. The group and individual interventions were not cost-effective. Conclusions: Enhanced MI, in group or individual formats, targeted at members of the general population with high CVD risk is not effective in reducing weight or increasing PA compared with UC. Future work should focus on ensuring objective evidence of high competency in BCTs, identifying those with modifiable factors for CVD risk and improving engagement of patients and primary care.
KW - CARDIOVASCULAR DISEASE
KW - COGNITIVE–BEHAVIOURAL THERAPY
KW - LIFESTYLE INTERVENTION
KW - MOTIVATIONAL INTERVIEWING
KW - PHYSICAL ACTIVITY
KW - PRIMARY HEALTH CARE
KW - WEIGHT LOSS
UR - http://www.scopus.com/inward/record.url?scp=85077169613&partnerID=8YFLogxK
U2 - 10.3310/hta23690
DO - 10.3310/hta23690
M3 - Article
C2 - 31858966
AN - SCOPUS:85077169613
SN - 1366-5278
VL - 23
SP - 1
EP - 144
JO - Health technology assessment (Winchester, England)
JF - Health technology assessment (Winchester, England)
IS - 69
ER -