Source: Annual Congress 2008 - Physiological response to exercise performance

Abstract

Background: Walking is an important functional activity and the shuttle walk test (SWT) has been used to evaluate functional capacity, surgical risk, measure improvements in exercise tolerance after treatment and prognosis of patients with cardiac and respiratory diseases. Objective: To analyze the physiologic variables in the SWT, verify interruption causes of the test and walking distance reached. Method: A prospective and descriptive study was designed including 40 women healthy and sedentary, between 20 and 30 years old, who underwent an evaluation including personal data, physiologic variables, Borg Scale, distance reached and interruption causes. The SWT was carried out in accordance with protocol described by Singh et al. (1992), the measures of physiologic variables and Borg Scale were done with the women seated in rest, at the end of the test and three minutes after the test finished. For statistical evaluation there were used the Variance Analysis for Repeated Measures and the Spearman Correlation test. Results: The women achieved a mean distance of 812 (±165)m, cardiac frequency of 164.5 (±19.6)bpm, respiratory frequency of 30.3 (±6,4)ipm, systolic blood pressure of 143.3 (±20.5) mmHg and diastolic blood pressure of 83.3 (±10.6)mmHg and Borg Scale of 5.4 (±2.2), being all values statistically significant (p<0.05) among the three moments. There was significant correlation between the cardiac frequency and distance walked (r=0.51, p=0.01). The main interruption cause was dyspnea (64.5 %). Conclusion: The SWT caused significant alterations of the physiologic variables, the cardiac frequency improved as the walking distance increased, the dyspnea was the main interruption cause of the test.

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I. Alonso Bredda Saad, J. Gomes Zabatiero, C. Patricia Santoro De Biasi, L. Campanatti Palhares, E. Couto, I. Felizardo Contrera Toro (Campinas, Sao Paulo, Brazil). Analysis of physiologic variables in healthy women in shuttle walk test. Eur Respir J 2008; 32: Suppl. 52, 3289

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