Concurrent exercise circuit protocol performed in public fitness facilities meets the American College of Sports Medicine guidelines for energy cost and metabolic intensity among older adults in Rio de Janeiro City.

The current study investigated whether a single bout of concurrent exercise (Ex Rx) at Third Age Academies (TAAs) in Rio de Janeiro City meets the American College of Sports Medicine (ACSM) guidelines for energy cost and metabolic intensity in older adults. Nine subjects (5 males and 4 females, 63-80 years of age) visited the laboratory for clinical screening and for anthropometrical, resting, and maximal oxygen uptake assessments. Thereafter, subjects performed an Ex Rx circuit consisting of a single circuit alternating aerobic and resistance exercises with outdoor exercise equipment using body mass as the load (total of 9 exercises, 1-2 sets of 15 repetitions). Expired gases were collected via a metabolic cart during exercise bouts. The mean observed energy cost value of 169.1 kcal was slightly greater than the minimum value of 150 kcal reported in the ACSM guidelines (p = 0.018). Like energy cost, all the intensity markers adopted to analyze the physiological strain induced by the Ex Rx circuit significantly exceeded their reference values for moderate intensity (reference values: 3.2 METs (mean observed value = 4.6 METs, p = 0.002); 40% of oxygen uptake reserve (mean observed value = 51.5%, p = 0.040); 40% of heart rate reserve (mean observed value = 64.1%, p < 0.001)), according to the ACSM guidelines. In conclusion, a single bout of Ex Rx circuit performed at TAAs in Rio de Janeiro City was able to induce a physiological strain (i.e., energy cost and intensity) compatible with ACSM recommendations for eliciting health benefits among older adults.

Effect of increased calcium consumption from fat-free milk in an energy-restricted diet on the metabolic syndrome and cardiometabolic outcomes in adults with type 2 diabetes mellitus: a randomised cross-over clinical trial.

We investigated the effects of high-Ca fat-free milk phase (MD) (prescription of approximately 1500 mg of Ca/d) v. low-Ca phase (CD) (prescription of approximately 800 mg of Ca/d) in an energy-restricted diet on the metabolic syndrome (MetS) and cardiometabolic measures in individuals with type 2 diabetes mellitus (T2DM) and low habitual Ca consumption (<600 mg/d). In this randomised cross-over design, fourteen adults with T2DM (49·5 (sd 8·6) years, BMI 29·4 (sd 4·5) kg/m2) consumed either MD or CD for 12 weeks, with a washout of 18 weeks between phases. A breakfast shake containing 700 mg (MD) or 6·4 mg (CD) of Ca was consumed in the laboratory. In addition, energy-restricted diets were prescribed (800 mg of dietary Ca/d). Waist circumference (WC), fasting glucose, fasting TAG, systolic (SBP) and diastolic blood pressure (DBP), fasting total cholesterol, fasting LDL-cholesterol, fasting HDL-cholesterol, HDL:LDL ratio, HDL:TAG ratio and lipid accumulation product (LAP) index were assessed at baseline and after each phase. Ca consumption during the study was equivalent to 1200 mg/d during MD and 525 mg/d during CD. There was a greater reduction in WC, SBP, DBP and LAP index after MD compared with CD. HDL:LDL ratio increased and total cholesterol, LDL-cholesterol, SBP, DBP and LAP index decreased only in MD. The consumption of approximately 1200 mg of Ca/d (700 mg from fat-free milk+500mg from other dietary sources) associated with an energy-restricted diet decreased some of the MetS components and cardiometabolic measures in adults with T2DM.

Dispêndio energético durante a prática de Exergames: um estudo com crianças da região sul do Brasil / Energetic cost during Exergames: a Southern Brazil region children's study

O objetivo deste trabalho foi avaliar o dispêndio energético em jogos de videogame ativo (exergames) e comparar as modalidades de jogo tênis, natação e boxe, considerando as variáveis equivalentes metabólicos (METs), frequência cardíaca e escala subjetiva de esforço. Trata-se de um estudo transversal com amostra de 20 crianças, idades entre 8 e 10 anos, do sexo feminino e masculino. Foi previamente estabelecido que os participantes realizassem 30 minutos de atividade nos jogos virtuais de tênis, natação e boxe, respectivamente, utilizando console Nintendo Wii ®. O tempo de prática foi dividido em três etapas de 10 minutos para cada modalidade com 5 minutos de intervalo entre as etapas. Foi mensurado peso corporal, estatura, consumo de oxigênio, frequência cardíaca e escala subjetiva de esforço. Foram encontrados valores de média e desvio padrão de 3,1±1,5 METs, 5,2±2,5 METs, 5,63±2,2 METs para as três modalidades respectivamente. Houve diferença estatisticamente significativa entre tênis e natação (IC95%: -3,759; -0,4188) e tênis e boxe (IC95%: -4,170; -0,8723) na variável METS, entre tênis e natação (IC95%: -30,59; -9,807) e tenis e boxe (IC95%: -33,19; -12,41) na variavel frequencia cardíaca. Não foi encontrado resultado estatisticamente significativo entre as modalidades na variável BORG. Observou-se que 25% da amostra realizou atividade física leve, 40% atividade física moderada e 35% atividade física vigorosa. Portanto, nosso estudo indica que a prática de exergames permite que os praticantes realizem atividade física que alcance níveis moderado a vigoroso, podendo ser recomendado para crianças como uma forma das mesmas alcançarem as recomendações de atividade física.

The aim of this study was to assessment energy expenditure in active video games (exergames) and compare the tennis, swimming and boxing games, considering the variables metabolic equivalents ( METs ), heart rate and exertion scale. It is a cross-sectional study with a sample of 20 children, age between 8 and 10 years old, female and male. It was previously established that participants performed 30 minutes of activity in virtual games of tennis, swimming and boxing, respectively, using Nintendo ® Wii console. The practice time was divided into three stages of 10 minutes for each mode with 5 minute interval between steps. Body weight, height, heart rate, and subjective effort scale metabolic equivalent was measured. Results: Mean and standard deviation were found 3.1 ± 1.5 METs, 5.2 ± 2.5 METs, 5.63 ± 2.2 METs for all three modalities respectively. There was a statistically significant difference between tennis and swimming (95% CI: -3.759, -0.4188) and tennis and boxing (95% CI: -4.170, -0.8723) in METS variable between tennis and swimming (95% CI: -30 , 59, -9.807) and tennis and boxing (95% CI: -33.19, -12.41) in the variable heart rate. Not found statistically significant result between the modalities in BORG. It was observed that 25% of the sample performed light physical activity, 40% moderate physical activity and vigorous physical activity 35%. Therefore, our study indicates that the practice of exergames allows practitioners to perform physical activity that achieves moderate to vigorous levels and may be recommended for children as a way of achieving the same physical activity recommendations.

More physically active and leaner adolescents have higher energy intake.

OBJECTIVE: To test whether youths who engage in vigorous physical activity are more likely to have lean bodies while ingesting relatively large amounts of energy. For this purpose, we studied the associations of both physical activity and adiposity with energy intake in adolescents. STUDY DESIGN: The study subjects were adolescents who participated in 1 of 2 cross-sectional studies, the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) study (n = 1450; mean age, 14.6 years) or the European Youth Heart Study (EYHS; n = 321; mean age, 15.6 years). Physical activity was measured by accelerometry, and energy intake was measured by 24-hour recall. In the HELENA study, body composition was assessed by 2 or more of the following methods: skinfold thickness, bioelectrical impedance analysis, plus dual-energy X-ray absorptiometry or air-displacement plethysmography in a subsample. In the EYHS, body composition was assessed by skinfold thickness. RESULTS: Fat mass was inversely associated with energy intake in both studies and using 4 different measurement methods (P ≤ .006). Overall, fat-free mass was positively associated with energy intake in both studies, yet the results were not consistent across measurement methods in the HELENA study. Vigorous physical activity in the HELENA study (P < .05) and moderate physical activity in the EYHS (P < .01) were positively associated with energy intake. Overall, results remained unchanged after adjustment for potential confounding factors, after mutual adjustment among the main exposures (physical activity and fat mass), and after the elimination of obese subjects, who might tend to underreport energy intake, from the analyses. CONCLUSION: Our data are consistent with the hypothesis that more physically active and leaner adolescents have higher energy intake than less active adolescents with larger amounts of fat mass.