Skip Navigation LinksHome > July 1999 - Volume 31 - Issue 7 > Cardiopulmonary and CD4 cell changes in response to exercise...
Medicine & Science in Sports & Exercise:
Clinical Sciences: Clinically Relevant

Cardiopulmonary and CD4 cell changes in response to exercise training in early symptomatic HIV infection

PERNA, FRANK M.; LaPERRIERE, ARTHUR; KLIMAS, NANCY; IRONSON, GAIL; PERRY, ARLETTE; PAVONE, JEAN; GOLDSTEIN, ALISON; MAJORS, PAT; MAKEMSON, DAVID; TALUTTO, CRAIG; SCHNEIDERMAN, NEIL; ANN FLETCHER, MARY; MEIJER, ONNO G.; KOPPES, LANDO

Collapse Box

Abstract

Cardiopulmonary and CD4 cell changes in response to exercise training in early symptomatic HIV infection. Med. Sci. Sports Exerc., Vol. 31, No. 7, pp. 973-979, 1999.

Purpose: The purposes of the present study were to assess the effects of a 12-wk laboratory based aerobic exercise program on cardiopulmonary function, CD4 cell count, and physician-assessed health status among symptomatic pre-AIDS HIV-infected individuals (N = 28) and to assess the degree to which ill health was associated with exercise relapse.

Methods: Responses to graded exercise test, physician-assessed health status, and CD4 cell counts were determined at baseline and 12-wk follow-up for participants randomly assigned to exercise or control conditions, and reasons for exercise noncompliance were recorded.

Results: Approximately 61% of exercise-assigned participants complied (> 50% attendance) with the exercise program, and analyses of exercise relapse data indicated that obesity and smoking status, but not exercise-associated illness, differentiated compliant from noncompliant exercisers. Compliant exercisers significantly improved peak oxygen consumption (V̇O2peak; 12%), oxygen pulse (O2pulse; 13%), tidal volume (TV; 8%), ventilation (V̇E; 17%), and leg power (25%) to a greater degree than control participants and noncompliant exercisers (all P < 0.05). Although no group differences in health status were found, a significant interaction effect indicated that noncompliant exercisers' CD4 cells declined (18%) significantly, whereas compliant exercisers' cell counts significantly increased (13%; P < 0.05).

Conclusion: We conclude that although aerobic exercise can improve cardiopulmonary functioning in symptomatic HIV-infected individuals with minimal health risks, attention to factors associated with exercise adherence is warranted.

© 1999 Lippincott Williams & Wilkins, Inc.

Login

Article Tools

Share

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.

Connect With Us