The article compares the role of physical activity and diet restriction combined as weight loss interventions. It wrongly assumes that physical activity is linked to weight loss. This is not strongly proven by any of the published literature. There are studies which only show mild association and for the short term. There is no long term impact of physical activity with weight loss. Weight gain is because of mainly over consumption of unhealthy food. It is not because of a lack of a physical activity. Physical activity recommendation is basically for “physical fitness” rather than prevention or treatment of weight gain.
Re: Long term maintenance of weight loss with non-surgical interventions in obese adults: systematic review and meta-analyses of randomised controlled trials