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Physical inactivity and obesity is not a myth: Dr Steven Blair comments on Dr Aseem Malhotra's editorial
  1. Steven N Blair
  1. Correspondence to Professor Steven N Blair, Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA; sblair{at}

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Malhotra et al 1 claim that ‘physical activity does not promote weight loss’. I respectfully disagree with many of the claims in the report.

  1. The authors claim that physical activity does not promote weight loss. Similar points were made in an article by Luke and Cooper published in 2013,2 and my colleagues and I published a commentary showing the weaknesses of their interpretation of the data.3 If you are interested in the details, please review that commentary. More detailed information on many of these points is presented in a position statement from the American College of Sports Medicine.4

  2. A second flawed point is the claim that over the past 30 years, there has been little change in physical activity, so the obesity epidemic must be due to increases in caloric intake. If one considers self-reported …

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