RESUMO
The purpose of this study was to investigate the effect of a single resistance training session on the glycemic and lipid response of women with Human Immunodeficiency Virus (HIV)/Acquired Immunodeficiency Syndrome (AIDS) treated with Antiretroviral Therapy (ART). The sample consisted of 10 female subjects who underwent one resistance training session involving different muscle groups, that is, three sets of 8-12 repetitions with an interval of 90 seconds between the sets, and 120 seconds between exercises. The loads used in each exercise corresponded to an intensity equivalent to the interval of 5-7, which was in accordance with the OMNI-RES scale. The capillary glycemic levels were evaluated under the fed state before (Pre) and immediately after (Post) the exercise session. In order to evaluate the total cholesterol, HDL, and triglycerides (TG), blood samples were collected before (Pre) and one hour after the experimental protocol (Post). Non-HDL values were obtained using the Friedewald formula. The results showed that after a single resistance training session, alterations occurred in the glycemic response (p = 0.03), with a decrease of 11.4% in the values when comparing Pre and Post workout moments (99.8 ± 14.3 mg/dL vs. 87.3 ± 11.3 mg/dL, respectively). However, no significant result was observed regarding lipid response. In conclusion, a single resistance training session can reduce glycemic response in HIV positive people treated with ART without interfering with the lipid response.
RESUMO
BACKGROUND: Impaired microcirculation is associated with poor walking capacity in symptomatic peripheral artery disease (PAD) patients during treadmill test; however, this test does not simulate the efforts of daily walking of these patients. Thus, the aim of the study was to describe the microcirculation responses during a 6-minute walk test (6MWT) and to analyze the relationship between microcirculation indicators and walking impairment in symptomatic PAD patients. METHODS: Thirty-four patients were included (mean age = 67.6 ± 11.2 years). Their clinical characteristics were collected, and they performed a 6MWT, in which the initial claudication distance (ICD) and total walking distance (TWD) were recorded. During and after the 6MWT, calf muscle oxygen saturation (StO2) parameters were monitored continuously to measure microcirculation behavior. The association between calf muscle StO2 parameters and walking impairment were analyzed by Pearson or Spearman correlations. RESULTS: Walking impairment was not associated with any StO2 parameters during exercise. In contrast, after 6MWT, recovery time of StO2 (r = -0.472, P = 0.008) and recovery time to maximal StO2 (r = -0.402, P = 0.019) were negatively correlated with ICD. Furthermore, the distance walked under claudication symptoms (ΔTWD-ICD) was positively correlated with recovery time to maximal StO2 (r = 0.347, P = 0.048). CONCLUSIONS: In symptomatic PAD patients, shorter ICD values during a 6MWT are associated with a delayed recovery in calf muscle StO2 after exercise. Calf muscle StO2 parameters decrease subtly during 6MWT, suggesting that the degree of ischemia in the calf muscle during ground walking, simulating efforts of the daily walking, is relatively low.
