RT Book, Section A1 Manore, Melinda M A2 Burke, Louise A2 Deakin, Vicki A2 Minehan, Michelle SR Print(0) ID 1185563169 T1 Energy Requirements and Measurement of Energy Expenditure T2 Clinical Sports Nutrition, 6e YR 2021 FD 2021 PB McGraw Hill Education (Australia) Pty Ltd PP New York, NY SN 9781743767900 LK accessphysiotherapy.mhmedical.com/content.aspx?aid=1185563169 RD 2024/04/20 AB Most individuals, including athletes, maintain a stable body mass (BM) over long periods of time, while paying little attention to the amount of energy consumed or expended each day. However, energy balance is of primary concern to athletes who want to alter BM and/or composition to improve their exercise performance or meet a designated weight requirement for their sport. When energy consumption is insufficient to match that expended, much of the effort of training can be lost, since both muscle and fat will be used for energy. In addition, if energy intake is limited or restricted, the ability to obtain other essential nutrients, such as carbohydrate (CHO), protein, fat, vitamins and minerals—which are necessary for optimal sport performance and good health—will also be compromised.