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Introduction: High-performance athletes often undergo periods of exhaustive training and insufficient recovery, which can lead to decreased performance, but it is not clear whether there are any differences between the sexes in the level of habitual physical activity, sedentary time or sleep quantity and quality in young highly trained badminton athletes. Objectives: The aim of this study was to compare the habitual physical activity (PA), sedentary time and sleep quantity and quality of highly trained young male and female badminton athletes and non-athletes. Methods: Twenty-seven young badminton athletes and twenty-one non-athletes (control group) were recruited. Sleep duration and quality (total time in bed, total sleep time, wake after sleep onset, sleep efficiency and latency), total counts, vigorous activity time and sedentary time were measured using a tri-axial accelerometer. Results: Male athletes spent less sedentary time (p=0.028), more time in vigorous activity (p=0.016) and had higher total counts (p 0.05). Conclusion: Among males but not females, young highly trained badminton athletes had less sedentary time and more time in vigorous activity than the non-athletes, however, there were no significant differences between the sexes or groups in sleep quantity and quality. Level of evidence III; Case-control study . RESUMEN Introducción: Los atletas de alto rendimiento con frecuencia son sometidos a períodos de entrenamiento exhaustivo y recuperación insuficiente, lo que puede llevar a una disminución del desempeño, pero no está claro si hay diferencia entre los sexos en cuanto al nivel de actividad física habitual, tiempo sedentario, cantidad y calidad del sueño en jóvenes atletas de bádminton altamente entrenados. Objetivos: El objetivo de este estudio fue comparar la actividad física habitual (AF), el tiempo de sedentarismo y la duración y calidad del sueño en jóvenes atletas de bádminton altamente entrenados y de no atletas, del sexo femenino y masculino. Métodos: Fueron reclutados veintisiete jóvenes atletas de bádminton y veintiuno no atletas (grupo control). La duración y la calidad del sueño (tiempo total en la cama, tiempo total de sueño, vigilia después del inicio del sueño, eficiencia y latencia del sueño), counts totales, el tiempo en actividad vigorosa y el tiempo de sedentarismo fueron medidos con un acelerómetro triaxial. Resultados: Los atletas del sexo masculino tuvieron menos tiempo de sedentarismo (p = 0,028), más tiempo de actividad vigorosa (p = 0,016) y mayor cantidad de counts totales (p 0,05). Conclusiones: Entre hombres, pero no entre mujeres, los jóvenes atletas de bádminton altamente entrenados tuvieron menor tiempo de sedentarismo y mayor tiempo en actividades vigorosas que los no atletas; entretanto, no hubo diferencia significativa entre los sexos o grupos en la cantidad y calidad del sueño. Nivel de evidencia III; Estudio de caso control . RESUMO Introdução: Atletas de alto rendimento com frequência são submetidos a períodos de treinamento exaustivo e recuperação insuficiente, o que pode levar à diminuição do desempenho, mas não está claro se há diferença entre os sexos quanto ao nível de atividade física habitual, tempo sedentário, quantidade e qualidade do sono em jovens atletas de badminton altamente treinados. Objetivos: O objetivo deste estudo foi comparar a atividade física habitual (AF), o tempo de sedentarismo e a duração e qualidade do sono em jovens atletas de badminton altamente treinados e de não atletas, do sexo masculino e feminino. Métodos: Vinte e sete jovens atletas de badminton e vinte e um não atletas (grupo controle) foram recrutados. A duração e a qualidade do sono (tempo total na cama, tempo total de sono, vigília após o início do sono, eficiência e latência do sono), counts totais, tempo em atividade vigorosa e tempo de sedentarismo foram medidos com um acelerômetro triaxial. Resultados: Atletas do sexo masculino tiveram menos tempo de sedentarismo (p = 0,028), mais tempo de atividade vigorosa(p = 0,016) e maior quantidade de counts totais (p < 0,001) do que o grupo controle masculino. Não houve diferença significante no tempo de sedentarismo (p = 0,702) ou tempo de atividade vigorosa (p = 0,205) entre as atletas e não atletas, mas as atletas do sexo feminino acumularam maior quantidade de counts totais que o grupo controle feminino (p = 0,003). Não houve diferença significante entre os sexos ou grupos para tempo na cama, tempo total de sono, eficiência do sono, vigília após o início do sono e latência (p> 0,05). Conclusões: Entre homens, mas não entre mulheres, os jovens atletas de badminton altamente treinados tiveram menor tempo de sedentarismo e maior tempo em atividades vigorosas do que os não atletas; entretanto, não houve diferença significante entre os sexos ou grupos na quantidade e qualidade do sono. Nível de evidência III; Estudo de caso controle .

Introduction: Decreased physical activity has been associated with poorer mental health and is a cause for concern during the COVID-19 pandemic. Objective: To compare groups of medical students (MS) who practiced different levels of moderate and vigorous physical activity (MVPA) during the COVID-19 pandemic, in relation to symptoms of anxiety and depression (BAI-BDI), sleep quality (PSQI), and physical activity (PA) - light, moderate, vigorous (LPA-MPA and VPA), and sedentary behavior (SB). Methods: This research is a cross-sectional study involving 218 MS. Data on the characteristics of the MS were collected through online forms: PA, SB, BAI, BDI, and PSQI. The Cohen's D (Effect Size - ES) and confidence interval (95% CI), Mann-Whitney test: Lower MVPA (Median=0 minute) and Higher MVPA (Median=390 minutes) were recorded. For the statistical analyses, we used: the Odds ratio (OR) for the presence of symptoms of high levels of anxiety and depression and poor sleep quality in the MS and MVPA. Results: We found a small ES for symptoms of depression (ES 0.26 95% CI 0.00 0.53 p=0.029), and significant differences (p

The objective of this study was to assess, in a sample composed by postmenopausal women, the agreement between physical activity time reported by short version of the IPAQ and measured by accelerometer in different intensities. The participants consisted of postmenopausal women aged ≥ 50 years (N = 60, mean age 61.5±7.5 years). They completed the IPAQ (short version) and then wore an accelerometer for one week. Statistical analysis was composed by the Kappa index, McNemar’s test, specificity and sensitivity, Spearman’s rank correlation and the Wilcoxon test. The amount of time spent in moderate and vigorous physical activity had weak correlation (r=-0.04-0.28) between accelerometer and IPAQ. IPAQ overestimated the minutes spent in moderate and vigorous intensities and underestimated the time spent in light activities. There was not significant agreement between instruments (kappa index= 0.151±0.111; p= 0.185; sensibility, 46% and specificity, 28%). There was a significant inconsistence for the time of physical activity reported by IPAQ., Motricidade, Vol 11 No 3 (2015)

Made available in DSpace on 2019-10-03T18:19:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-10-31 The purpose of this study was to investigate the effects of Syzygium cumini (SC) nectar supplementation on performance, markers of oxidative stress, muscle damage, and psychological response in Handball players. Twenty-five young athletes (age = 18.6 +/- 2.4 years) from an elite high school national level Brazilian Handball team were randomized into two study groups: SC/Jamelon nectar (SC, n = 12) and placebo (n = 13). The subjects ingested 10 mL/kg/day of Jamelon nectar or placebo 30 min before the training sessions and immediately after training cessation, for 28 days. Body mass index (BMI) and percentage of fat mass were assessed using bioelectrical impedance analysis. Biomarkers of oxidative stress were measured by lipid peroxidation, which was quantified by malondialdehyde (MDA). Total antioxidant capacity (TAC), creatine kinase (CK) activity, and lactate dehydrogenase (LDH) were determined. The 20 m shuttle run test, vertical jump, and running anaerobic sprint test were assessed to verify performance and the fatigue index was calculated. The Profile of Mood States (POMS) questionnaire was used for psychological evaluation. Both groups demonstrated improved vertical jump performance and a decreased fatigue index over time but without significant differences between them regarding performance. There was statistically significance only for SC in CK, LDH, and MDA, and TAC was greater in the SC compared to placebo. Furthermore, only the SC group demonstrated improved mood disturbance and confusion after the intervention. In conclusion, the present study suggests that SC nectar supplementation reduced biomarkers of oxidative stress and muscle damage, and improved psychological response in young handball players. Univ Fed Piaui, Dept Nutr, Teresina, Brazil Sao Paulo State Univ, Sch Technol & Sci, Dept Phys Educ, Skeletal Muscle Assessment Lab, Sao Paulo, Brazil Univ Western Sao Paulo, Dept Nutr, Presidente Prudente, Brazil Univ Fed Paraiba, Lab Study Phys Training Appl Performance & Hlth, Joao Pessoa, Paraiba, Brazil Brazilian Agr Res Corp, Fed Inst Piaui, Piaui, Brazil Univ Fed Piaui, Dept Biophys & Physiol, Grp Studies Exercise Physiol Appl Performance & H, Teresina, Brazil Univ Fed Piaui, Dept Phys Educ, Immunometab Skeletal Muscle & Exercise Res Grp, Teresina, Brazil Sao Paulo State Univ, Sch Technol & Sci, Dept Phys Educ, Skeletal Muscle Assessment Lab, Sao Paulo, Brazil

The purpose of this study was to investigate the influence of short and moderate recovery intervals during heavy strength exercise on performance, inflammatory, and metabolic responses in recreational weightlifters. Eight healthy subjects (age = 24.6 ± 4.1 years) performed 2 randomized sequences with different rest intervals: short = 90% of 1RM and 30 seconds rest allowed between sets; moderate = 90% of 1RM and 90 seconds rest allowed between sets. All sequences of exercises were performed over 4 sets until movement failure in the squat and bench press exercises, respectively. Glucose, TNF-α, IL-6, IL-10, IL-10/TNF-α ratio, and nonester fatty acid concentrations were assessed at the baseline, immediately postexercise, post-15 and post-30 minutes. We observed a statistically significant decrease after 30 seconds on maximum number of repetitions (p = 0.003) and total weight lifted (p = 0.006) after the bench press, and there was a marginal decrease in the squat (p = 0.055). The glucose concentrations showed a significant increase post-15 minutes in the 30-second condition (pre-exercise = 86.1 ± 9.1, immediately = 85.3 ± 8.2, post-15 = 97.0 ± 9.0, post-30 = 87.1 ± 5.3 mg/dl; p = 0.015); on the other hand, IL-10 increased post-30 minutes in the 90-second condition (pre-exercise = 18.2 ± 12.7, immediately = 16.4 ± 10.7, post-15 = 16.8 ± 12.2, post-30 = 35.0 ± 13.1 pg/ml; p0.001). In addition, the 90-second condition showed anti-inflammatory effects (as indicated by IL-10/TNF-α ratio: pre-exercise = 1.08 ± 1.32, immediately = 1.23 ± 1.20, post-15 = 1.15 ± 1.14, post-30 = 2.48 ± 2.07; p = 0.020) compared with the 30-second condition (pre-exercise = 1.30 ± 2.04, immediately = 0.99 ± 1.27, post-15 = 1.23 ± 1.82, post-30 = 1.28 ± 1.28; p = 0.635). Thus, we concluded that a moderate interval of recovery (90 seconds) during heavy strength exercise allowed higher workload, IL-10 levels, and IL-10/TNF-α ratio in recreational weightlifters.