Resistance Exercise, Recovery Drinks and Appetite

Study Overview
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Brief Summary
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Whilst the effects of manipulating the macronutrient content of foods on appetite and energy intake has been relatively well studied at rest, little is known about these responses in a post-exercise context. The effect of post-exercise nutrition on recovery from or adaptation to exercise has been well studied. However, many exercisers do so for weight management and thus any post-exercise nutrition might impact on energy balance and might need to be carefully considered. This study will examine the impact of manipulating the composition of a recovery drink consumed after resistance exercise on subsequent appetite and energy intake.

Detailed Description
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Subjects perform a bout of lower body resistance exercise lasting  50 min and immediately post-exercise they consume one of two recovery drinks over a 5 min period. Over the next 60 min subjective appetite responses will be measured and then 60 min after drink ingestion, subjects will consume an ad-libitum meal.

Official Title
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Effect of Recovery Drink Composition Consumed After Resistance Exercise on Subsequent Appetite and Energy Intake

Conditions
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Active Population

Intervention / Treatment
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* Dietary Supplement: Protein drink
* Dietary Supplement: Carbohydrate drink


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Generally fit and healthy Use resistance exercise as part of weekly training Weight stable in previous 6 months Exclusion Criteria: Smoker History of gastric, digestive, cardiovascular or renal disease Lactose, dairy, gluten intolerances or allergies

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years


Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Protein<br>In this arm the subjects were provided with a PROTEIN drink to consume after exercise. This protein drink contained whey protein isolate that provided 0.3 g/ kg body mass of protein. | Dietary Supplement: Protein drink<br>* The protein drink was administered during this trial<br>|
| Experimental: Carbohydrate<br>In this arm the subjects were provided with a CARBOHYDRATE drink to consume after exercise. This carbohydrate drink was energy matched to the protein drink in the other arm of the experiment. | Dietary Supplement: Carbohydrate drink<br>* The carbohydrate drink was administered in this trial<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Ad-libitum energy intake | Assessed via a homogenous pasta meal | 65 min post-exercise | 
| Subjective appetite (hunger) | Assessed via 100 mm visual analogue scales | 150 min | 
| Subjective appetite (fullness) | Assessed via 100 mm visual analogue scales | 150 min | 
| Subjective appetite (desire to eat) | Assessed via 100 mm visual analogue scales | 150 min | 
| Subjective appetite (prospective food consumption) | Assessed via 100 mm visual analogue scales | 150 min | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pleasantness of study drinks | Assessed via 100 mm visual analogue scales | Immediately after drinking | 
| Aftertaste of study drinks | Assessed via 100 mm visual analogue scales | Immediately after drinking | 
| Saltiness of study drinks | Assessed via 100 mm visual analogue scales | Immediately after drinking | 
| Bitterness of study drinks | Assessed via 100 mm visual analogue scales | Immediately after drinking | 
| Sweetness of study drinks | Assessed via 100 mm visual analogue scales | Immediately after drinking | 
| Creaminess of study drinks | Assessed via 100 mm visual analogue scales | Immediately after drinking | 
| Thickness of study drinks | Assessed via 100 mm visual analogue scales | Immediately after drinking | 
| Stickiness of study drinks | Assessed via 100 mm visual analogue scales | Immediately after drinking | 
| Fruitiness of study drinks | Assessed via 100 mm visual analogue scales | Immediately after drinking | 
| Refreshment of study drinks | Assessed via 100 mm visual analogue scales | Immediately after drinking | 
| Eating rate | mean eating rate determined at ad-libitum meal | 65 min post-exercise |