title: Influence of brisk walking on appetite, energy intake, and plasma acylated ghrelin.
abstract: OBJECTIVE
  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 x m(-2), (.)VO2max 55.9 +/- 1.8 mL x kg(-1) x 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 x 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.
authors: Loughborough University, UK.
authors: James A
authors: JA
authors: King
authors: Lucy K
authors: LK
authors: Wasse
authors: David R
authors: DR
authors: Broom
authors: David J
authors: DJ
authors: Stensel
mesh_terms: D000293:Adolescent; D000328:Adult; D001066:Appetite / Q000502:physiology*; D015415:Biomarkers; D002149:Energy Intake; D054439:Ghrelin / Q000097:blood / Q000378:metabolism*; D006801:Humans; D008297:Male; D005082:Physical Exertion; D016138:Walking / Q000502:physiology*; D055815:Young Adult
chemical_list: D015415:Biomarkers; D054439:Ghrelin