Abstract Title:

Nutrient supplementation post ambulation in persons with incomplete spinal cord injuries: a randomized, double-blinded, placebo-controlled case series.

Abstract Source:

Arch Phys Med Rehabil. 2007 Feb;88(2):228-33. PMID: 17270521

Abstract Author(s):

Mark S Nash, Nina M Meltzer, Shannon C Martins, Patricia A Burns, Stephen D Lindley, Edelle C Field-Fote

Article Affiliation:

Department of Neurological Surgery, Miller School of Medicine, University of Miami, Miami, FL 33136, USA. mnash@miami.edu

Abstract:

OBJECTIVE: To examine effects of protein-carbohydrate intake on ambulation performance in persons with incomplete spinal cord injury (SCI). DESIGN: Double-blinded treatment with washout and placebo crossover. SETTING: Academic medical center. PARTICIPANTS: Three subjects aged 34 to 43 years with incomplete SCI at C5-T4. INTERVENTIONS: Subjects walked to fatigue on 5 consecutive days. On fatigue, participants consumed 48g of vanilla-flavored whey and 1g/kg of body weight of carbohydrate (CH(2)O). Weekend rest followed, and the process was repeated. A 2-week washout was interposed and the process repeated using 48g of vanilla-flavored soy. MAIN OUTCOME MEASURES: Oxygen consumed (Vo(2); in L/min), carbon dioxide evolved (Vco(2)), respiratory exchange ratio (RER: Vco(2)/Vo(2)), time (in minutes), and distance walked (in meters) were recorded. Caloric expenditure was computed as Vo(2) by time by 21kJ/L (5kcal/L) of oxygen consumed. Data were averaged across the final 2 ambulation sessions for each testing condition. RESULTS: Despite slow ambulation velocities (range, .11-.34m/s), RERs near or above unity reflected reliance on CH(2)O fuel substrates. Average ambulation time to fatigue was 17.8% longer; distance walked 37.9% longer, and energy expenditure 12.2% greater with the whey and CH(2)O supplement than with the soy drink. CONCLUSIONS: Whey and CH(2)O ingestion after fatiguing ambulation enhanced ensuing ambulation by increasing ambulation distance, time, and caloric expenditure in persons with incomplete SCI.

Study Type : Human Study

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