A Hand Gregory, N Blair Steven
Professor, Department of Exercise Science.
Department of Epidemiology and Biostatistics, University of South Carolina, Columbia, South Carolina, US.
Eur Endocrinol. 2014 Aug;10(2):131-135. doi: 10.17925/EE.2014.10.02.131. Epub 2014 Aug 28.
In order to reverse the global obesity pandemic, there is a need for an enhanced understanding of the energy dynamics that underlie the problem. To maintain a stable body weight, energy intake must, over time, match or equal energy expenditure, a concept known as energy balance. Obesity results from a positive state of energy balance (i.e. when energy intake exceeds energy expenditure). However, recent research suggests that strategies to combat obesity should focus on energy flux (the amount of calories going through a system), rather than energy balance alone. In other words, it is easier to maintain weight loss at higher levels of physical activity. Recent findings suggest that a high energy flux, maintained by increasing energy expenditure, can improve an individual's metabolic profile without changing weight. Further understanding of this concept may help in the design of interventions to achieve and maintain a healthy weight.
为了扭转全球肥胖流行的趋势，有必要更深入地了解这一问题背后的能量动态。为了维持稳定的体重，随着时间的推移，能量摄入必须与能量消耗相匹配或相等，这一概念称为能量平衡。肥胖是由能量平衡的正向状态导致的（即能量摄入超过能量消耗时）。然而，最近的研究表明，对抗肥胖的策略应侧重于能量通量（通过一个系统的卡路里量），而不仅仅是能量平衡。换句话说，在较高水平的身体活动中更容易维持体重减轻。最近的研究结果表明，通过增加能量消耗来维持高能量通量，可以改善个体的代谢状况而不改变体重。对这一概念的进一步理解可能有助于设计实现和维持健康体重的干预措施。
