KEVIN DEIGHTON THESIS
Kevin’s personal research investigates the effects of exercise and nutritional interventions on appetite regulation, energy balance, and metabolic health in a range of populations. The current review has several limitations. Despite our best efforts, we cannot guarantee that we captured all the relevant studies for this review. Understanding the responses of appetite regulatory hormones to exercise and consequently the effect they may have on energy intake and appetite could enhance the understanding of the role of exercise in weight control. Between 7 and 19 participants took part in each study mean 12 participants see Table 1 for summaries of study protocols. Most studies on exercise and appetite regulation involve crossover designs and relatively small sample sizes.
Dr Kevin Deighton
Studies were also excluded if they did not include a control trial. British Journal of Nutrition https: Additionally, studies differed by exercising participants in both fasting and fed states.
Six studies involving a total of 73 participants met the inclusion criteria for the meta-analysis. The software calculated the pooled standardised difference in means to determine the effect size [ 17 ].
Kevin Deighton – Leeds Beckett University
The current review has several limitations. Hormone area-under-the-curve AUC data for the six studies included in the meta-analysis. Medicine and Science in Sports and Exercisevol.
A negative effect size indicates that exercise was associated with decreased hormone concentrations, whilst a positive effect size indicates that hormone concentrations increased with exercise [ 19 ]. It was concluded that an acute bout of exercise suppresses acylated ghrelin SMD: The control condition was required oevin be identical to that of the exercise condition, minus the exercise bout. Meta-analyses can be useful to quantify the effects of an intervention with greater precision from a pooled estimate.
Obesity is associated with an increased risk of type 2 diabetes, coronary heart disease, and some types of cancer, as well as strokes [ 2 ].
Such study-level explorations of potential moderators of effect size should be interpreted with caution as within-study relationships can sometimes disagree with between-study relationships [ 32 ].
Comprehensive meta-analysis software Version 2. This analysis was only performed for acylated ghrelin as there were not enough studies reporting data for a precise exploration of total PYY and total GLP Init was estimated that 1. A large and statistically significant Egger statistic indicates the presence of a small study effect. Journal of Sports Sciences. Undergraduate Courses Right Arrow.
Finally, we cannot directly link the effects of exercise on appetite regulatory hormones to weight loss and management due to the acute nature of the studies and the lack of consistency in studies including energy intake and appetite ratings.
A broad range of sources for study inclusion were chosen to minimise the risk of small study effects, which can occur if only published studies are included. A valid and reliable method for assessing the energy intake of elite adolescent athletes. Together, these could further cofound the study of hormonal responses to exercise. View at Google Scholar W.
Medicine and Science in Sports and Exercise https: A systematic review and meta-analysis. Find out more here. The British Services Dhaulagiri medical research expedition.
The standardised reduction in acylated ghrelin for exercise versus control conditions was found to be 0. Deightkn Science OA https: For inclusion, studies were required to meet the following criteria: Journal of Human Hypertension https: A systematic review of peer-reviewed studies was undertaken comparing concentrations of appetite regulatory hormones, quantified as an area under the curve AUC.
BMI was used as a moderator in a metaregression analysis methods-of-moments modelto determine whether BMI could explain the variation in effect size values seen between studies for acylated ghrelin concentrations kein 17 ]. Nessan Costello Evaluating the nutritional requirements of adolescent rugby league players. The majority deightom studies indicate that individuals do not compensate for the energy expended during exercise in the immediate hours after exercise [ 14 ].