Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/2884

Appears in Collections:School of Sport Journal Articles
Peer Review Status: Refereed
Title: Postexercise Muscle Glycogen Synthesis with Combined Glucose and Fructose Ingestion
Authors: Wallis, Gareth A
Hulston, Carl J
Mann, Christopher H
Roper, Helen P
Tipton, Kevin
Jeukendrup, Asker E
Contact Email: k.d.tipton@stir.ac.uk
Keywords: Exercise Recovery
Carbohydrate Supplementation
Issue Date: Oct-2008
Publisher: Lippincott Williams and Wilkins / American College of Sports Medicine
Citation: Wallis GA, Hulston CJ, Mann CH, Roper HP, Tipton K & Jeukendrup AE (2008) Postexercise Muscle Glycogen Synthesis with Combined Glucose and Fructose Ingestion, Medicine and Science in Sports and Exercise, 40 (10), pp. 1789-1794.
Abstract: Purpose: To evaluate the efficacy of using combined glucose and fructose (GF) ingestion as a means to stimulate short-term (4 h) postexercise muscle glycogen synthesis compared to glucose only (G). Methods: On two separate occasions, six endurance-trained men performed an exhaustive glycogen-depleting exercise bout followed by a 4-h recovery period. Muscle biopsy samples were obtained from the vastus lateralis muscle at 0, 1, and 4 h after exercise. Subjects ingested carbohydrate solutions containing G (90 gIhj1) or GF (G = 60 gIhj1; F = 30 gIhj1) commencing immediately after exercise and every 30 min thereafter. Results: Immediate postexercise muscle glycogen concentrations were similar in both trials (G = 128 T 25 mmolIkgj1 dry muscle (dm) vs GF = 112 T 16 mmolIkgj1 dm; P 9 0.05). Total glycogen storage during the 4-h recovery period was 176 T 33 and 155 T 31 mmolIkgj1 dm for G and GF, respectively (G vs GF, P 9 0.05). Hence, mean muscle glycogen synthesis rates during the 4-h recovery period did not differ between the two conditions (G = 44 T 8 mmolIkgj1 dmIhj1 vs GF = 39 T 8 mmolIkgj1 dmIhj1, P 9 0.05). Plasma glucose and serum insulin responses during the recovery period were similar in both conditions, although plasma lactate concentrations were significantly elevated during GF compared to G (by È0.8 mmolILj1, P G 0.05). Conclusions: Glucose and glucose/fructose (2:1 ratio) solutions, ingested at a rate of 90 gIhj1, are equally effective at restoring muscle glycogen in exercised muscles during the recovery from exhaustive exercise
Type: Journal Article
URI: http://hdl.handle.net/1893/2884
URL: http://journals.lww.com/acsm-msse/Abstract/2008/10000/Postexercise_Muscle_Glycogen_Synthesis_with.11.aspx
DOI Link: http://dx.doi.org/10.1249/MSS.0b013e31817e0f7e
Rights: Copyright 2008 by the American College of Sports Medicine.; The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.
Affiliation: University of Birmingham
University of Birmingham
Birmingham Women’s Hospit
Birmingham Heartlands Hospital
Sport - Academic
University of Birmingham

Files in This Item:
File Description SizeFormat 
Wallis 08 glycogen glc frc cycling MSSE.pdf232.15 kBAdobe PDFUnder Embargo until 31/12/2999     Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependant on the depositor still being contactable at their original email address.

This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.