The Effects of a Six-Week Weight Loss Program on Body Composition and Muscular Strength and Endurance

Main Article Content

Paul Stickles
Jamie M. Blose
Antonia Battaglino
Alexis Trumbetti
Jared James
Katie Cooper
Anna Schade
Melissa Reed
Selen Razon
Melissa A. Whidden

Keywords

Body Composition, Strength, Resting Metabolic Rate

Abstract




Introduction: The purpose of this study was to investigate body composition and muscular strength and endurance adaptations with a six-week weight loss program. Methods: Body fat, fat-free mass, waist and hip circumferences, resting metabolic rate, and muscular fitness were assessed before and after the six-week program in 40 middle-aged women.
Results: There was a significant reduction in body fat (P < 0.001) and waist and hip circumferences (P < 0.01) while there was an increase in fat-free mass (P < 0.001). There was a significant improvement in muscular strength in all muscle groups examined (P < 0.01) and an improvement in muscular endurance in forearm plank hold and wall taps for time. Resting metabolic rate did not change after the six-week weight loss program.
Conclusions: This weight loss program was effective in improving body composition while improving muscular strength and endurance. However, this combination of diet, exercise, and water consumption was not effective in changing resting metabolic rate. This study contributes to the necessity to create an exercise and diet program of optimal duration and intensity that is effective in altering body composition and improving muscular fitness while improving resting metabolic rate for the long-term maintenance of optimal body weight.




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References

1. Alizadeh Z, Kordi R, Rostami M, Mansournia MA, Hosseinzadeh-Attar SJ, Fallah J. Comparison between the effects of continuous and intermittent aerobic exercise on weight loss and body fat percentage in overweight and obese women: a randomized controlled trial. Inter J of Prevent Med. 2013;4(8):881-888.
2. American College of Sports Medicine Guidelines for Exercise Testing & Prescription. 10th ed. Philadelphia, PA: Wolters Kluwer; 2018.
3. Apfelbaum MJ, Bestsarron J, Lacatis D. Effect of caloric restriction and excessive caloric intake on energy expenditure. American Journal of Clinical Nutrition. 1971;24:1405-1409.
4. Blose JM, Stickles P, Battaglino A, Trumbetti A, James J, Cooper K, et al. The effects of a six- week weight loss program on blood lipid profiles and cardiovascular health. The Journal of Exercise and Nutrition. 2020;3(4):16.
5. Byrne HK and Wilmore JH. The relationship of mode and intensity of training on resting metabolic rate in women. International Journal of Sport Nutrition and Exercise Metabolism. 2001;11(1):1-14.

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