The Effects of Exercise on Dietary Intake

Not Applicable

Completed

Conditions: Inactive Lifestyle Males
Active Lifestyle Males

Interventions: Other: Exercise Session
Other: Rest Session

Registration Number: NCT00943436

Lead Sponsor: The University of Tennessee, Knoxville

Brief Summary: The purpose of this study is to determine whether or not energy and macronutrient intake changes when comparing habitually active and habitually sedentary college-aged males in two different sessions of one resting and one exercise.

Detailed Description: Obesity is a consequence of positive energy balance, in which more energy is consumed than expended. It is hypothesized that regular amounts of physical activity may be important in helping individuals more accurately regulate energy balance. More research is needed to understand the impact of a physically active lifestyle on energy regulation capabilities Therefore, this study looks at sedentary college aged males compared to active college aged males when looking at two different sessions of energy expenditure, one exercise session and one resting session, and their energy and macronutrient intake after these sessions. The sessions will take place in the morning where each participant will exercise or rest and then be allowed to eat from a buffet ad libitum, where acute energy and macronutrient intake will be assessed.

The following hypotheses are proposed:

* Individuals who regularly engage in physical activity will more accurately respond to an energy deficit caused by an acute period of physical activity by increasing intake at a subsequent meal.

* Individuals who do not regularly engage in physical activity (sedentary individuals) will be less sensitive to accurately regulate energy balance and will not respond to an energy deficit caused by a period of acute physical activity.

Recruitment & Eligibility

Status: COMPLETED

Sex: Male

Target Recruitment: 20

Inclusion Criteria

BMI of 20-25
Percent body fat of 10-18%
Exercises greater than or equal to 5 days/wk at 30 min/day or less than or equal to 1 day/week at 1 hour/day consistently for the past month
Likes study foods

Exclusion Criteria

Does not fit in exercise criteria
Allergies or unwillingness eat study food, falls
From survey qualifies as a "conscious eater"

Study & Design

Study Type: INTERVENTIONAL

Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Inactive males	Rest Session	Males who participate in less than 1 hour of physical activity per week for the last month.
Active males	Exercise Session	Males who participate in at least 30 minutes of physical activity on 5 or more days per week for the last month.
Active males	Rest Session	Males who participate in at least 30 minutes of physical activity on 5 or more days per week for the last month.
Inactive males	Exercise Session	Males who participate in less than 1 hour of physical activity per week for the last month.

Primary Outcome Measures

Name	Time	Method
Percent Energy From Carbohydrate at the Meal (Rest Session)	2 hours	carbohydrate intake was measured by weighing each item served in the ad libitum buffet meal before and after the subject's meal and subtracting the difference to determine gram weight of each item consumed. Food labels and the NDS-R software were used to determine dietary intake based upon gram weight of each food consumed.
Percent Energy From Fat at the Meal (Exercise Session)	2 hours	Fat intake was measured by weighing each item served in the ad libitum buffet meal before and after the subject's meal and subtracting the difference to determine gram weight of each item consumed. Food labels and the NDS-R software were used to determine dietary intake based upon gram weight of each food consumed.
Percent Energy From Fat at the Meal (Rest Session)	2 hours	Fat intake was measured by weighing each item served in the ad libitum buffet meal before and after the subject's meal and subtracting the difference to determine gram weight of each item consumed. Food labels and the NDS-R software were used to determine dietary intake based upon gram weight of each food consumed.
Percent Energy From Carbohydrate at the Meal (Exercise Session)	2 hours	Carbohydrate intake was measured by weighing each item served in the ad libitum buffet meal before and after the subject's meal and subtracting the difference to determine gram weight of each item consumed. Food labels and the NDS-R software were used to determine dietary intake based upon gram weight of each food consumed.
Energy Intake at the Meal (Exercise Session)	2 hours	Energy intake was measured by weighing each item served in the ad libitum buffet meal before and after the subject's meal and subtracting the difference to determine gram weight of each item consumed. Food labels and the NDS-R software were used to determine dietary intake based upon gram weight of each food consumed.
Energy Intake at the Meal (Rest Session)	2 hours	Energy intake was measured by weighing each item served in the ad libitum buffet meal before and after the subject's meal and subtracting the difference to determine gram weight of each item consumed. Food labels and the NDS-R software were used to determine dietary intake based upon gram weight of each food consumed.
Percent Energy From Protein at the Meal (Exercise Session)	2 hours	Protein intake was measured by weighing each item served in the ad libitum buffet meal before and after the subject's meal and subtracting the difference to determine gram weight of each item consumed. Food labels and the NDS-R software were used to determine dietary intake based upon gram weight of each food consumed.
Percent Energy From Protein at the Meal (Rest Session)	2 hours	Protein intake was measured by weighing each item served in the ad libitum buffet meal before and after the subject's meal and subtracting the difference to determine gram weight of each item consumed. Food labels and the NDS-R software were used to determine dietary intake based upon gram weight of each food consumed.