Effects of Resistance and Endurance Training in Persons with Paraplegia

JACOBS, P. L. Effects of Resistance and Endurance Training in Persons with Paraplegia. Med. Sci. Sports Exerc., Vol. 41, No. 5. pp. 992-997, 2009. Introduction: The specific effects of resistance and endurance training on upper extremity work capacity, muscular strength, and anaerobic power in chronic survivors of paraplegia have not been previously determined. Purpose: This study compared the effects of 12 wk of endurance training (ET) with 12 wk of resistance training (RT) on (V) over dotO(2peak), tipper extremity strength, and power output in persons with chronic paraplegia. Methods: Eighteen subjects with neurologically complete paraplegia, T6-T10, participated in three weekly exercise sessions during a 12-wk training period. Subjects were matched into pairs (body mass and gender) and were randomly assigned to ET or RT. The ET group performed 30 min of arm cranking at 70%-85% of HRpeak. The RT group performed three sets of 10 repetitions at six exercise stations with an intensity of ranging from 60% to 70% of I repetition maximum (1RM). Values of upper extremity strength (1RM) were established using the Mayhew regression equation. (V) over dotO(2peak) was determined during arm ergometry testing using open circuit spirometry. Ann Wingate anaerobic testing (WAnT) was used to determine subjects' peak and mean anaerobic power output. Results: (V) over dotO(2peak) values were significantly greater after RT (15.1%) and ET (11.8%). Muscular strength significantly increased for all exercise maneuvers in the RT group (P values < 0.01) with no changes detected in the ET group. Mean WAnT power increased in the RT and ET groups by 8% and 5%. respectively. The RT group displayed significantly greater gains in peak WAnT power (P < 0.001) than ET, 15.6% and 2.6%, respectively. Conclusion: Persons with paraplegia can significantly improve their upper extremity work capacity, muscular strength, and power by participating in RT.