The purposes of this study were to measure the acute effects of knee wraps (KWs) on knee and hip joint kinematics, dynamic muscle activation from the vastus lateralis (VL) and gluteus maximus (GM), and rating of perceived exertion (RPE) during the back squat exercise at 2 different intensities. Fourteen resistance-trained men (age: 24 ± 4 years, height: 176 ± 6 cm, body mass: 81 ± 11 kg, back squat 1 repetition maximum [1RM]: 107 ± 30 kg, 3 ± 1 year of back squat experience) performed 1 set of 3 repetitions under 4 different conditions, to a depth of approximately 90 degrees of knee joint flexion, and in random order: KWs at 60% 1RM (KW60), KWs at 90% 1RM (KW90), without knee wraps (NWs) at 60% 1RM (NW60), and NWs at 90% 1RM (NW90). The dependent variables obtained were vertical and horizontal bar displacement, peak joint angle in the sagittal plane (hip and knee joints), concentric and eccentric muscle activation (by integrated electromyography) from the VL and GM, and RPE. For muscle activity, there were significant decreases in the VL NWs at 60% 1RM (p = 0.013) and a significant increase NWs at 90% 1RM (p = 0.037). There was a significant increase in VL muscle activity at 90% 1RM, when compared with 60% 1RM (KW: p = 0.001, effect size (ES) = 1.51 and NW: p < 00.001, ES = 1.67). There was a decrease in GM muscle activity NWs only at 60% 1RM (p = 0.014). There was a significant increase in GM muscle activity at 90% 1RM, when compared with 60% 1RM (KW: p < 0.001 and NW: p < 0.001). For peak hip joint flexion angle, there was significant decreases between intensities (90% 1RM < 60% 1RM) only to NWs condition (p = 0.009), and there was greater knee flexion NWs for both intensities: 60% 1RM (p < 0.001) and 90% 1RM (p = 0.018). For normalized vertical barbell displacement, there were significant differences between intensities when using KWs (p = 0.022). There were significant differences in RPE between 60 and 90% 1RM for each condition: KWs (p < 0.001) and NWs (p < 0.001). In conclusion, the use of KWs results in decreased muscle activation of the VL at the same intensity (90% 1RM).

Introduction: About one-third of the day goes on in the workplace. Therefore, strategies that benefit the quality of life of workers become important. Objective: To investigate determinants of quality of life after three months of workers' health promotion programs. Methods: An experimental design was used to verify the quality of life outcomes of 190 workers. The interventions lasted three months. Company A received the exercise program, posters with recommendations on health and quality of life and computer software; Company B received only an exercise program; Company C received posters with recommendations on health and quality of life and computer software, Company D was the control. All assessments of the quality of work life occurred through the questionnaire QVS-80. Data were analyzed through descriptive statistics, the z test and Cronbach's alpha test. results: The main factors that interfered in the quality of life were: physical activity focused on aesthetics, physical fitness, smoking, physical activity recommended by a doctor, sitting time, family life, sleep quality, income. Comparing national data to the present study for all chronic diseases self-reported, statistically significant differences were observed. Physical activity for aesthetic reasons is the variable that most negatively influences on the perception of quality of life. Conclusion: These data help to reflect on the importance of combined strategies such as physical activity implementation and the understanding on the lifestyle components in the workplace.

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The COVID-19 virus had its origin in the city of Whuan - China. This virus has a clinical picture ranging from asymptomatic infections to severe respiratory conditions. Through this virus it was decreed by the World Health Organization as being a pandemic, with it routine aspects were compromised, causing new solutions to be proposed. Quality of life was one of the factors affected by this virus, especially when we relate to teachers, as they had to adapt to new teaching methods, moving from classroom to virtual teaching. This study aimed to assess the perception of quality of life of teachers from public and private schools through the COVID-19 pandemic. The sample consisted of 35 volunteers, being teachers from public and private schools, of both sexes. As a research instrument, the WHOQOL-BRIEF - an instrument that proposes to evaluate the Quality of Life, applied in a virtual way through the Google Forms platform, is composed of 26 questions subdivided into four domains: Domain I - Physical; Domain II - Psychological; Domain III - Social Relationships and Domain IV - Environment. Descriptive statistics for the results were performed. The level of significance adopted for this study was 5% (P≤0.05). The results found show the physical domain with 70.71 points; psychological domain 68.21 points; social domain 64.52 points and environment domain 64.91. It is concluded that the teachers evaluated in most part have suffered with the aspect involving the quality of life.

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