Effects of seated double-poling ergometer training on aerobic and mechanical power in individuals with spinal cord injury

Abstract

Objective: To determine whether regular interval training on a seated double-poling ergometer can increase physical capacity and safely improve performance towards maximal level in individuals with spinal cord injury. Methods: A total of 13 subjects with spinal cord injury (injury levels T5?L1) performed 30 sessions of seated double-poling ergometer training over a period of 10 weeks. Sub-maximal and maximal double-poling ergometer tests were performed before (test-retest) and after this training period. Oxygen uptake was measured using the Douglas Bag system. Three-dimensional kinematics were recorded using an optoelectronic system and piezoelectric force sensors were used to register force in both poles. Results: The mean intra-class correlation coefficient for test?retest values was 0. 83 (standard deviation 0. 11). After training significant improvements were observed in people with spinal cord injury in oxygen uptake (22. 7%), ventilation (20. 7%) and blood lactate level (22. 0%) during maximal exertion exercises. Mean power per stroke and peak pole force increased by 15. 4% and 23. 7%, respectively. At sub-maximal level, significantly lower values were observed in ventilation (?12. 8%) and blood lactate level (?25. 0%). Conclusion: Regular interval training on the seated double-poling ergometer was effective for individuals with spinal cord injury below T5 level in terms of improving aerobic capacity and upper-body power output. The training was safe and did not cause any overload symptoms.