Energy balance in weight stable athletes with and without menstrual disorders

Scandinavian Journal of Medicine & Science in Sports
Sissel E Tomten, Arne T Høstmark

Abstract

The energy balance and nutritional adequacy was assessed in a group of runners with irregular menstrual function (IR, n = 10) and in a comparable group of runners with normal menstrual function (R, n = 10). Based on computerized records of 3 days food intake, the mean content of energy and macronutrients were estimated. Excess energy expenditure (EEE) during training hours was estimated using HF monitoring and individual HF/VO2 nomograms. For the rest of a daily 24 h cycle, estimated values for basal metabolic rate (BMR) and sedentary metabolic rate were applied. Daily training-related excess energy expenditure (2.1 +/- 0.3 vs 2.2 +/- 0.4) MJ (Mean +/- SEM) and total energy expenditure (TEE) (11.0 +/- 0.3 vs 11.2 +/- 0.4) MJ in R vs IR were not different in the two groups. Calculated daily energy intake (EI) was, however, significantly lower in IR (9.7 +/- 0.5 MJ) than in R (12.3 +/- 0.7 MJ), (P = 0.007). Calculated EI and TEE were in balance in R athletes. When the same calculations were applied on IR athletes, a moderate but statistically significant negative energy balance was found (-1.5 +/- 0.6 MJ, P = 0.03). The calculated energy deficit was supported by significantly lower levels of free thyroxine in IR athletes, and may...Continue Reading

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Citations

Dec 6, 2007·Journal of Sports Sciences·Melinda M ManoreUNKNOWN International Association of Athletics Federations
Nov 26, 2008·Journal of Sports Sciences·Sissel E Tomten, Arne T Høstmark
Oct 19, 2012·Journal of Sports Sciences·Jennifer L ReedNancy I Williams
Feb 25, 2014·British Journal of Sports Medicine·Anna MelinJorunn Sundgot-Borgen
Dec 1, 2015·Physical Medicine and Rehabilitation Clinics of North America·Brian Y Kim, Aurelia Nattiv
Jun 4, 2014·Scandinavian Journal of Medicine & Science in Sports·A MelinA Sjödin
May 9, 2015·European Journal of Sport Science·Karolina Łagowska, Karina Kapczuk
May 31, 2014·Journal of the International Society of Sports Nutrition·Karolina LagowskaJoanna Bajerska
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Jul 21, 2017·Medicine and Science in Sports and Exercise·Åsa B TornbergAnders Sjödin
Jul 7, 2015·Scandinavian Journal of Medicine & Science in Sports·A MelinA Sjödin
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Jul 9, 2010·The American Journal of Clinical Nutrition·Michelle T BarrackJeanne F Nichols

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