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Title: Influence of brisk walking on appetite, energy intake, and plasma acylated ghrelin
Authors: King, James A.
Wasse, Lucy K.
Broom, David R.
Stensel, David J.
Keywords: Acylated ghrelin
Issue Date: 2010
Publisher: © American College of Sports Medicine
Citation: KING, J.A. ... et al, 2010. Influence of brisk walking on appetite, energy intake, and plasma acylated ghrelin. Medicine and Science in Sports and Exercise, 42 (3) pp. 485-492.
Abstract: Purpose: This study examined the effect of an acute bout of brisk walking on appetite, energy intake, and the appetite-stimulating hormone-acylated ghrelin. Methods: Fourteen healthy young males (age 21.9 +/- 0.5 yr, body mass index 23.4 +/- 0.6 kg.m(-2), (V) over dotO(2max) 55.9 +/- 1.8 mL.kg(-1).min(-1); mean +/- SEM) completed two 8-h trials (brisk walking and control) in a randomized counterbalanced fashion. The brisk walking trial commenced with 60 min of subjectively paced brisk walking on a level-motorized treadmill after which participants rested for 7 h. Participants rested for the duration of the control trial. Ad libitum buffet meals were offered twice during main trials (1.5-2 and 5-5.5 h). Appetite (hunger, fullness, satisfaction, and prospective food consumption) was assessed at 30-min intervals throughout. Levels of acylated ghrelin, glucose, insulin, and triacylglycerol were determined from plasma. Results: Sixty minutes of brisk walking (7.0 +/- 0.1 km.h(-1)) yielded a net (exercise minus resting) energy expenditure of 2008 +/- 134 kJ, yet it did not significantly influence appetite, energy/macronutrient intake, or the plasma concentration of acylated ghrelin either during or after exercise (P > 0.05). Participants did not compensate for energy expended during walking, therefore a deficit in energy was induced (1836 kJ, 439 kcal) relative to control. Conclusions: This study demonstrates that, despite inducing a moderate energy deficit, an acute bout of subjectively paced brisk walking does not elicit compensatory responses in acylated ghrelin, appetite, or energy intake. This finding lends support for a role of brisk walking in weight management.
Description: This is a non-final version of an article published in final form in Medicine and Science in Sports and Exercise: http://dx.doi.org/10.1249/MSS.0b013e3181ba10c4 [PubMed ID: 19952806].
Sponsor: This project received financial support from the Ramblers' Association.
Version: Accepted for publication
DOI: 10.1249/MSS.0b013e3181ba10c4
URI: https://dspace.lboro.ac.uk/2134/10167
Publisher Link: http://dx.doi.org/10.1249/MSS.0b013e3181ba10c4
ISSN: 0195-9131
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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