PMID: 2106774Mar 1, 1990Paper

Increased muscle dynamic endurance associated with weight reduction on a very-low-calorie diet

The American Journal of Clinical Nutrition
M KrotkiewskiJ Szczepanik

Abstract

To assess muscle function after a period of negative energy balance, 32 obese women were placed on a 544-kcal/d, high-protein diet for 4 wk. Weight loss was associated with a decrease in the waist-to-hip-circumference ratio (WHR) and significantly higher emptying of abdominal than gluteal fat cells. The low-calorie regimen was associated with a significant increase in isokinetic muscle endurance, a decrease in glycogen concentration, and an increase in glycogen synthase (GS) activity and its fractional velocity (FV). The GS activity and its FV were negatively correlated with the WHR before treatment whereas their subsequent increase was correlated with the decrease in WHR. Dietary treatment produced a decrease in the isokinetic muscle strength, which was correlated with the reduction in lean body mass. The improvement in dynamic endurance observed after energy restriction parallels not only the increase in GS activity in muscle but also the decrease in glycogen stores and glucose oxidation, and most probably depends on the increased utilization of fatty acids.

Citations

Nov 10, 2007·São Paulo Medical Journal = Revista Paulista De Medicina·Karla Luciana Magnani, Antônio José Maria Cataneo
Oct 1, 1996·Scandinavian Journal of Medicine & Science in Sports·S IwaoY Sato
Mar 7, 2000·International Journal of Obesity and Related Metabolic Disorders : Journal of the International Association for the Study of Obesity·M KrotkiewskiJ Tölli
May 27, 2004·Journal of Sports Sciences·Takashi UmedaKazuo Sugawara
Jul 14, 2017·Human Factors·Ranjana K Mehta, Lora Anne Cavuoto
Apr 30, 2016·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·J ZibelliniA Sainsbury
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Aug 25, 2009·Clinics in Chest Medicine·Akshay Sood

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