Oral creatine supplementation enhances upper extremity work capacity in persons with cervical-level spinal cord injury

Patrick L. Jacobs, Edward T. Mahoney, Kelly A. Cohn, Laurey F. Sheradsky, Barth A. Green

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

Objective: To examine the effects of short-term creatine monohydrate supplementation on the upper extremity work capacity of persons with cervical-level spinal cord injury (SCI). Design: Randomized, double-blind, placebo-controlled, crossover design study. Consists of 2 treatment phases lasting for 7 days, separated by a 21-day washout period. Setting: University research laboratory trial. Participants: Sixteen men with complete cervical-level SCI (C5-7). Intervention: Subjects were randomly assigned to I of 2 groups and received either 20g/d of creatine monohydrate supplement powder or placebo maltodextrin powder for the first treatment phase; the treatment was reversed in the second phase. Incremental peak arm ergometry tests, using 2-minute work stages and 1-minute recovery periods, were performed immediately before and after each treatment phase (total of 4 assessments). The initial stage was performed unloaded, with power output progressively increased 10 watts/stage until subjects had achieved volitional exhaustion. Main Outcome Measures: Peak power output, time to fatigue, heart rate, and metabolic measurements, including oxygen uptake (Vo2), minute ventilation, tidal volume (VT), and respiration frequency. Results: Significantly greater values of Vo2, Vco2 and VT at peak effort after creatine supplementation (P < .001). Conclusions: Creatine supplementation enhances the exercise capacity in persons with complete cervical-level SCI and may promote greater exercise training benefits.

Original languageEnglish (US)
Pages (from-to)19-23
Number of pages5
JournalArchives of physical medicine and rehabilitation
Volume83
Issue number1
DOIs
StatePublished - Jan 1 2002

Keywords

  • Creatine
  • Dietary supplementation
  • Exercise tolerance
  • Rehabilitation
  • Spinal cord injuries

ASJC Scopus subject areas

  • Rehabilitation

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