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在8周内随着自愿轮转跑步逐渐增加能量摄入可限制雄性大鼠的体重变化。

Gradual increase in energy intake over 8 weeks with voluntary wheel running limits body weight change in male rats.

作者信息

Durocher Isabelle, Grant Daniel S, Bomhof Marc R

机构信息

Department of Kinesiology and Physical Education, University of Lethbridge, 4401 University Dr. W., Lethbridge, ABT1K 3M4, Canada.

出版信息

Br J Nutr. 2025 Feb 28;133(4):567-576. doi: 10.1017/S0007114525000194. Epub 2025 Feb 10.

Abstract

The influence of appetite and energy intake (EI) on energy compensation in response to chronic exercise remains poorly understood. This study examined the temporal impact of habitual exercise on EI and the homeostatic appetite regulators that influence energy compensation. Twelve-week-old male Sprague Dawley rats ( 30) fed an AIN-93M diet were randomised into one of three groups: (1) sedentary control (SED); (2) voluntary wheel exercise (EX) and (3) sedentary, weight-matched to aerobic exercise (SED-WM) for 8 weeks. Measures of EI, body weight and adiposity were assessed. Appetite-regulating hormones acyl ghrelin, active glucagon-like peptide (GLP)-1, leptin and insulin were measured in response to an oral glucose tolerance test. Rats with running wheels completed an average of 192 km over 8 weeks. While EI was initially reduced in EX, EI gradually increased with exercise training after week 1 ( < 0·05). Body weight was lower in EX relative to SED from weeks 3 to 5 but did not differ at the end of the study. Fat mass and long-term satiety hormones leptin and insulin were lower in EX ( < 0·05). No differences were observed in concentrations of the satiety hormone active GLP-1 or the orexigenic hormone acyl ghrelin. Short-term homeostatic regulators of appetite do not appear to be altered with exercise training. The reduction in adiposity and associated decrease in tonic satiety hormones leptin and insulin are likely contributors to the coupling of energy expenditure with EI over time with voluntary exercise.

摘要

食欲和能量摄入(EI)对慢性运动后能量补偿的影响仍未得到充分了解。本研究考察了习惯性运动对EI以及影响能量补偿的稳态食欲调节因子的时间影响。将12周龄、喂食AIN-93M饮食的雄性斯普拉格-道利大鼠(n = 30)随机分为三组之一:(1)久坐对照组(SED);(2)自愿轮转运动组(EX)和(3)久坐、体重与有氧运动组匹配组(SED-WM),为期8周。评估EI、体重和肥胖程度。在口服葡萄糖耐量试验后,测量食欲调节激素酰基胃饥饿素、活性胰高血糖素样肽(GLP)-1、瘦素和胰岛素。有转轮的大鼠在8周内平均跑了192公里。虽然EX组的EI最初有所降低,但在第1周后随着运动训练逐渐增加(P<0.05)。从第3周到第5周,EX组的体重低于SED组,但在研究结束时无差异。EX组的脂肪量以及长期饱腹感激素瘦素和胰岛素较低(P<0.05)。饱腹感激素活性GLP-1或促食欲激素酰基胃饥饿素的浓度未观察到差异。食欲的短期稳态调节因子似乎不会因运动训练而改变。肥胖的减少以及与之相关的紧张性饱腹感激素瘦素和胰岛素的降低,可能是随着时间推移自愿运动时能量消耗与EI耦合的原因。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3524/12011546/2ccb3319ab70/S0007114525000194_fig1.jpg

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