Electronic Theses and Dissertations

Identifier

2465

Date

2015

Document Type

Thesis

Degree Name

Master of Science

Major

Health and Sport Science

Concentration

Nutrition Science

Committee Chair

Randal K Buddington

Committee Member

Marie van der Merwe

Committee Member

Richard J Bloomer

Abstract

Carbohydrate absorption may limit the benefits of carbohydrate ingestion during endurance exercise. Intestinal structural and functional adaptations were investigated in response to a vegan Daniel Fast diet (DF) or a Western Diet (WD), with or without endurance exercise training (DFE, DFS, WDE, WDS). Male Long-Evans rats (n = 28, aged 3-4 weeks) were assigned to the two diets and were either exercise trained by treadmill running or were sedentary for the 13 week intervention. Structural parameters significantly affected by diet (p <0.05) include villus height, crypt depths, intestine length and mass. Exercise significantly affected the percentage of mucosa in the proximal small intestine and several histological measurements (p <0.05). Functionally, WDE rats had higher proximal maltase activity (p = 0.04), but did not have higher rates of glucose uptake. A surprising finding is the intestine adapts to endurance exercise by reducing mass while maintaining carbohydrate digestion.

Comments

Data is provided by the student.

Library Comment

Dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.

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