Fitness Weight Loss

How Do Different Lifestyle Intervention Methods Affect Weight Loss?

Tony Nunez
Tony Nunez
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This is part 3 of a 3 part Q&A series that answers: What does current research tell us about aerobic fitness and metformin, strength training recovery times, and obesity intervention methods?

Part 1: Can metformin have a negative impact on cardiorespiratory fitness?

Part 2: What difference does recovery time make in strength training performance?

The
percentage of middle-aged U.S. adults with obesity is reportedly 40%, with
higher levels for poorer and less educated adults, despite health
professionals’ efforts to stress the importance of physical activity and
healthy eating. Barriers to a healthier lifestyle range from financial burden
to travel difficulty and lack of education. Given these obstacles, the study
authors investigated the use of video conferencing to deliver exercise classes
and discuss nutrition with patients.

Researchers
compared three lifestyle interventions—clinic-based, community-based and video
conference—and their associated attendance and weight loss results after 6 and
12 months. Participants, mean age 53 years, were predominantly female (82%) and
predominantly African-American (65%). All 150 participants were considered
obese, with a mean body mass index of 38.9, and half reported a household
income of $18,000 or less. In terms of weight loss, the study measured the
percentage of participants who lost >2 kilograms (>4.4 pounds) of body
weight.

Surprisingly,
according to the authors, there was no statistically significant difference in
weight loss between the three intervention types after 12 months. When baseline
observations were taken into account, available data showed that 29%, 29% and 34% of
participants in clinic-based, community-based and video-conferencing
interventions, respectively, experienced weight loss of more than 4.4 pounds.
The study abstract noted that attendance was poor all round; in those same
groups, percentages attending at least one session were 15%, 45% and 58%,
respectively.

Reference: Clark, D.O., et al. 2019. Outcomes of an RCT of videoconference vs. in-person or in-clinic nutrition and exercise in midlife adults with obesity. Obesity Science and Practice, 5 (2), 111–19.

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The Author

Tony Nunez

Tony Nunez

Tony P. Nunuez, PhD, is an assistant professor of human performance and sport at the Metropolitan State University of Denver. He is an active researcher and presenter in the exercise physiology and fitness field.