Source: Annual Congress 2008 - Physiological response to exercise performance
Disease area: Airway diseases, Respiratory critical care

Abstract

Spinal cord injury (SCI) can have a critical impact on the respiratory system due to respiratory muscle (RM) impairment. Among the different options to improve respiratory function in SCI patients, RM training may be attractive. We evaluated the effect of RM endurance training (RMET) on RM function, dyspnea and exercise performance in SCI athletes. 9 endurance athletes of international level (7 paraplegics T4-L1, 2 post-polio syndromes) were evaluated on three occasions (E1-3), with a 1-month interval between evaluations. Subjects performed between E1 and E2 their standard individual exercise training program, and between E2 and E3 the same program with 5 additional RMET sessions per week. Each evaluation included the following measurements: lung function test, RM strength and endurance tests, a maximal incremental arm cranking test and a field test (simulated competition). Ventilation and dyspnea were evaluated during each exercise test. Lung function variables and maximal inspiratory strength were not modified (p>0.05) while respiratory endurance (+24±16%,p<0.01) and maximal expiratory strength (+14±22%;p<0.01) increased from E2 to E3. During the arm cranking test, exercise duration (+7±6%, p=0.09) and maximal power output (+5±6%,p=0.08) tended to increase between E2 and E3 while ventilation and dyspnea remained similar. During the field test, exercise time (-1±3%,p=0.37) and ventilation were unchanged but dyspnea was reduced (-19±23%,p=0.02) between E2 and E3. We concluded that RMET can improve RM function, reduce the perception of dyspnea but modified only slightly exercise performance in SCI athletes. The lesion level as well as the training status probably influence the impact of RMET in SCI subjects.

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Citations should be made in the following way:
S. Verges, P. Flore, G. Nantermoz, P. A. Lafaix, B. Wuyam (Grenoble, France). Respiratory muscle endurance training in spinal cord injured athletes. Eur Respir J 2008; 32: Suppl. 52, 3302

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