Changes in lower extremity muscle mass and muscle strength after weight loss in obese men: A prospective study
Abstract
Background Obesity is not only associated with internal diseases but also with surgical problems. Surgical diseases related to obesity frequently occur in the load bearing joints of the lower limbs. To decrease the occurrence of surgical diseases related to obesity, weight loss has been recommended. It is important for obese men to maintain muscle mass and muscle strength after weight loss because low muscle mass and muscle strength are also related to the occurrence of surgical diseases. To date, the importance of muscle mass and muscle strength after weight loss in obese men has been underappreciated.Objective The purpose of this study was to investigate changes in lower extremity muscle mass and muscle strength resulting from a weight loss programme consisting of caloric restriction and exercise.Methods All participants concurrently attended a 12-week diet class 1day/week and a 12-week exercise class 3days/week. Body weight and body composition by dual-energy X-ray absorptiometry and knee extensor strength by dynamometry were assessed.Results The weight loss programme led to a 14.1% weight loss accompanied by significant loss of leg muscle mass, static maximal muscle strength, dynamic maximal muscle strength and dynamic muscle endurance but not with significant loss of dynamic muscle power. Decline of muscle strength was related to a decrease in muscle mass, but not completely dependent on a decrease in muscle mass. Body weight-normalised muscle strength increased significantly.Conclusion We recommend utilising resistance exercise to restore muscle mass and muscle strength in the legs after substantial weight loss.
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CR intervention in elderly humans results in a reduction or maintenance of muscle strength.
“CR intervention in elderly humans results in a reduction [18,19] or maintenance [15,16,20,24] of muscle strength.”
From Resistance Training Prevents Muscle Loss Induced by Caloric Restriction in Obese Elderly Individuals: A Systematic Review and Meta-Analysis (2018) · cites this paper as [18]
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- Authors
- Kim, B., Tsujimoto, T., So, R., & Tanaka, K.
- Affiliations
- University of Tsukuba (JP)
- Corresponding author
- Kim, Bokun
- Venue
- Obesity Research & Clinical Practice
- Publisher
- Elsevier BV
- Published
- 2015-07
- Volume
- 9
- Issue
- 4
- Pages
- 365-373
- ISSN
- 1871-403X (ISSN-L)
- OpenAlex
- W2123299697
- Cited by
- 18
- References
- 21
- Citations by year
- 2026: 2 · 2024: 3 · 2023: 1 · 2022: 2 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 3 · 2015: 1
- FWCI
- 1.47
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Obesity Research & Clinical Practice (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Japan Society for the Promotion of Science (14F04009)
- Topics
- Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
- Health Sciences › Medicine › Physiology › Body Composition Measurement Techniques
- Keywords
- obesity, weight loss, muscle strength, muscular endurance, muscle power, caloric restriction, resistance training, quadriceps strength, body composition, load-bearing joints, surgical diseases
- MeSH terms
- Adaptation, Physiological, Adult, Humans, Japan, Male, Middle Aged, Obesity, Prospective Studies, Weight Loss, Exercise, Body Mass Index, Treatment Outcome, Muscle, Skeletal, Caloric Restriction, Lower Extremity, Muscle Strength, Resistance Training
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