Brief Report: Effects of Low-Volume High-Intensity Interval Training in Hispanic HIV+ Women. (1st July 2020)

• Record Type: Journal Article
• Authors: Ramírez-Marrero, Farah A.; Pérez-Frontera, Sigrid; Amalbert-Birriel, Marcos A.; Matos, Miriam; Santana-Bagur, Jorge; Frontera, Walter R.; Wojna, Valerie
• Is Part Of: Journal of acquired immune deficiency syndromes. Volume 84:Number 3(2020)
• Publication Date: 2020-07-01
• Subjects: cardiorespiratory fitness -- VO2peak -- exercise workload -- time to peak exercise -- ventilatory threshold; AIDS (Disease) -- Periodicals; Acquired Immunodeficiency Syndrome -- Periodicals; AIDS (Disease); Periodicals; 616.9792005
• DOI: 10.1097/QAI.0000000000002353
• Languages: English
• ISSNs: 1525-4135

Abstract

Abstract : Background: Low cardiorespiratory fitness (CRF) is usually observed in people living with HIV. The effect of a low-volume high-intensity interval training (LV-HIIT) on CRF in HIV+ and HIV− Hispanic women was evaluated in this study. Setting: A nonrandomized clinical trial with pre-test and post-test using a LV-HIIT intervention was conducted in the AIDS Clinical Trials Unit and the Puerto Rico Clinical and Translational Research Consortium at the University of Puerto Rico Medical Sciences Campus. Methods: Twenty-nine HIV+ and 13 HIV− Hispanic women recruited from community-based programs and clinics, and able to engage in daily physical activities, volunteered to participate. Of these, 20 HIV+ (69%) and 11 HIV− (85%) completed the study and were included in the analyses. LV-HIIT consisted of 6-week, 3 d/wk, 8–10 high-intensity and low-intensity intervals on a cycle ergometer at 80%–90% of heart rate reserve. Main outcome measures were CRF (defined as VO2 peak), peak workload, and time to peak exercise. Results: Average peak workload and time to peak exercise increased after training ( P < 0.05) in both groups. However, average CRF was significantly higher after training only in the HIV− group. Gains in CRF were observed in 100% of HIV− and 50% of HIV+ women. This was not influenced by exercise testing, habitual physical activity, or anthropometric variables. Conclusions: Given the lack of change in CRF observed in the HIV+ group after LV-HIIT intervention, it is important to focus on variations that may occur within groups.