As an example, he noted a study of the effectiveness of three alternative combinations of methods to promote physical activity in Newcastle. In this, 523 adults were randomised to one control group and four intervention groups that consisted of either a brief (one interview) or intensive (six interviews over 12 weeks) motivational interviewing, with or without financial incentives (30 vouchers entitling free access to leisure facilities). `The most effective intervention was the one involving six motivational interviews and a financial incentive: 55 percent of these participants had increased physical activity scores, compared with 35 per cent in the group that only received intense motivational interviewing'. |
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