Acute effect of resistance exercise on cognitive function in people living with HIV.

People living with HIV are at an increased risk of developing cognitive deficits. Physical exercise is an important strategy to improve the brain health of people living with HIV. This randomized, controlled study aimed to investigate the acute effect of a single resistance exercise session on the cognitive function of people living with HIV. Twenty-three people living with HIV were randomized (1:1) to a control group (n = 12) or the exercise group (n = 11). Cognitive function was assessed by the Stroop test and the Trail Making Test. The exercise group was evaluated before and after the exercise session; meanwhile, the control group was evaluated before and after a 40-minute rest period. No statistical difference was found on the effect of exercise on cognitive function (p > 0.05). This result suggests that one session of resistance exercise was not capable of improving the cognitive function of people with HIV.

The Acute Effect of a Single Resistance Training Session on the Glycemic Response among Women with HIV/AIDS.

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.

O período do dia não influencia o desempenho físico de homens praticantes de treinamento com pesos / Day period fails to affect the physical performance of males who practice weight lifting

O objetivo deste estudo é avaliar o desempenho de praticantes de treinamento com pesos em diferentes períodos do dia. A amostra foi composta por 10 homens treinados (24,4 ± 2,7anos, 80,6 ± 12,7 kg, 180,0 ± 10,8 cm), submetidos ao teste de uma repetição máxima (1RM) para determinação de carga máxima, no exercício supino no banco horizontal. Em seguida, três encontros foram destinados para realização do teste de resistência de força a 80% de 1RM, realizados em diferentes períodos do dia, de maneira aleatória. A análise de variância (ANOVA one-way) foi utilizada para verificar as médias dos grupos nos períodos distintos. Não foram encontradas diferenças no desempenho, independente do horário do dia, manhã (25 ± 4 repetições), tarde (26 ± 7 repetições) e noite (26 ± 7 repetições) em relação ao desempenho obtido (P > 0,05). Assim, sugere-se que o período do dia não influencia o desempenho da força e fadiga de indivíduos jovens treinados.

To evaluate the performance of weight lifterS at different periods of the day. Method: sample comprised 10 trained males (24.4± 2.7 years, 80.6±12.7kg, 180.0±10.8cm) who underwent maximum repetition test (MRT) to determine maximum load, by supine exercise, on a horizontal bench. Three sessions were employed to test force resistance at 80% MRT, at random, at different periods of the day. One way ANOVA was employed to verify means of groups within distinct periods. There was no difference in performance with regard to day period: morning (25 ± 4 repetitions), afternoon (26 ± 7 repetitions) and evening (26 ± 7 repetitions) with regard to performance (P > 0.05). It may be suggested that the period of the day does not affect force performance and fatigue of trained young people.