Efeito da atividade física sobre a qualidade seminal

INTRODUÇÃO: A saúde reprodutora masculina pode ser influenciada devida à prática de atividade física, e com isso tem-se aumentado o número de estudos que analisam o efeito da atividade física na qualidade seminal. Descobertas apontam que mudanças significativas na qualidade do sêmen podem ocorrer com a prática de atividade física, que pode alterar sua qualidade de acordo com o tipo de atividade física, a intensidade e a duração. OBJETIVO: Neste contexto, o presente estudo realizou uma análise detalhada da literatura atual com o objetivo de verificar o efeito de diferentes atividades físicas sobre a saúde reprodutora masculina. MÉTODO: Trata-se de uma revisão sistemática feita nas bases de dados do PubMed. Utilizou-se os itens propostos pelo PRISMA para a busca, seleção e extração de dados. De acordo com o fluxograma proposto, 244 artigos foram identificados e, destes, 12 foram selecionados. RESULTADOS: Apoiada por fortes evidências clínicas, esta revisão sugere que a atividade física intensa pode provocar fortes alterações hormonais e prejudicar a qualidade seminal. Já a atividade física moderada parece ter um efeito neutro ou benéfico para a qualidade do sêmen. Além disso, o efeito da atividade física na qualidade do sêmen pode ser diferente de acordo com o tipo de atividade física. CONCLUSÃO: Frente às evidências, ainda existe falta de conclusões sólidas sobre esse assunto, devido ao fato de existir muita contradição entre os estudos existentes e da atividade física não ser facilmente quantificada. ABSTRACT. Effect of physical activity on seminal quality, BACKGROUND: Male reproductive health may be influenced by physical activity, and this has increased the number of studies that analyze the effect of physical activity on seminal quality. Findings indicate that significant changes in semen quality can occur due to the practice of physical activity, which can alter its quality according to the type of physical activity, intensity and duration. OBJECTIVE: In this context, the present study performed a detailed analysis of the current literature with the objective of verifying the effect of different physical activity on male reproductive health. METHODS: A systematic review performed on the PubMed databases. The items proposed by PRISMA were used for searching, selecting and extracting data. According to the proposed flowchart, 244 articles were indentified and, of these, 12 were selected. RESULTS: Supported by strong clinical evidence, this review shows that intense physical activity can cause strong hormonal changes and impair seminal quality. On the other hand, moderate physical activity seems to have a neutral or beneficial effect on semen quality. In addition, the effect of physical activity on semen quality may differ according to the type of physical activity. CONCLUSION: Faced with the evidence, there is still a lack of solid conclusions on this subject, due to the fact that there is a lot of contradiction between the existing studies and that physical activity can not be easily quantified.

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Impact of physical activity and lifestyle in pre-infection on the susceptibility and prognosis of infects with COVID-19

10.21203/rs.3.rs-50626/v1 ◽

2020 ◽

Author(s):

Baozhen Huang ◽

Shixi Zhang ◽

Jiuyu Gong ◽

Yanlin Niu ◽

Fengjuan Zhang ◽

...

Keyword(s):

Physical Activity ◽

Hospital Stay ◽

Regression Models ◽

Moderate Physical Activity ◽

Intensity Level ◽

Moderate Activity ◽

Physical Activity Intensity ◽

Special Effect ◽

Lifestyle Habits ◽

Activity Intensity

Abstract Background There are very few studies focusing on the relationship between COVID-19 and pre-infection lifestyle. In the absence of effective vaccines and special-effect medicines, it is very meaningful to actively respond to the disease pandemic by improving lifestyle habits. Methods This is a multicenter, retrospective cohort study enrolled 431 adult people including 228 normal people and 203 confirmed infects in Wubei, Henan and Shandong Provinces. Questionnaires were used to collect information on physical activity and lifestyle by competent doctors. The univariate logistic regression models and multiple regression models were used in risk factor analysis. Kruskal-Wallis H test were used to test the correlation. Results Lifestyle habits including exercise, smoking, sedentary behavior and physical activity intensity can significantly affect the probability of getting COVID-19 (P < 0.05). The MET (Metabolic Equivalent) intensity classification and sleep status are found to be the potential influencing factors of prognosis in both all infects and symptomatic patients. In all infects, taking the high MET intensity level as a reference, inpatient days would increase by 1.812 times (95% CI: 0.887–3.701) with no significance when the level is moderate (P > 0.05) and significantly increase by 6.674 times (95% CI: 1.613–27.613) when the level is low (P < 0.05). Kruskal-Wallis H test results showed moderate activity MET*min promoted shorter hospital stay (P < 0.05) mainly. Conclusions Sleep status and physical activity influenced the susceptibility and prognosis of COVID-19. Lack of sleep and low MET intensity level may prolong the hospital stay, which means a relatively slow recovery. This encourages the public to have moderate physical activity and adequate sleep to respond to the COVID-19 pandemic actively.

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INTENSITY, DURATION AND TYPE OF PHYSICAL ACTIVITY REQUIRED TO IMPROVE FUNCTION IN KNEE OSTEOARTHRITIS

Acta Ortopédica Brasileira ◽

10.1590/1413-785220172501166212 ◽

2017 ◽

Vol 25 (1) ◽

pp. 25-29 ◽

Cited By ~ 1

Author(s):

RICARDO AKIHIRO KIRIHARA ◽

FELLIPE BRAVIM CATELAN ◽

FABIANE ELIZE SABINO DE FARIAS ◽

CLEIDNÉIA APARECIDA CLEMENTE DA SILVA ◽

CLAUDIA HELENA DE AZEVEDO CERNIGOY ◽

...

Keyword(s):

Physical Activity ◽

Retrospective Study ◽

Knee Osteoarthritis ◽

Weight Training ◽

Functional Improvement ◽

Physical Activity Intensity ◽

Level Of Evidence ◽

Activity Intensity ◽

Type Of Exercise ◽

Intense Physical Activity

ABSTRACT Objective: To evaluate the effects of physical activity intensity, type and duration in patients with knee osteoarthritis (KOA) . Methods: A retrospective study of 195 KOA patients who were followed for two years after receiving educational material about KOA with or without attending classes. The patients were evaluated at baseline and 24 months. At the evaluations, the patients answered questionnaires pertaining to pain and function (WOMAC, Lequesne, VAS and SF-36); reported the intensity, duration and type of exercise performed per week; and performed the Timed Up & Go (TUG) and Five Times Sit-to-Stand (FTSST) tests . Results: Increased age affected improvements in the TUG results (p=0.017). The type, intensity and duration of physical activity did not correlate with pain, function or quality of life improvements (p>0.05), but the TUG results were on average 4 seconds faster among the patients who practiced intense physical activity and/or exercised for more than 180 minutes per week and/or performed isolated weight training or swam compared with those who remained sedentary after 2 years (p=0.01; p<0.001; p=0.01; p=0.04, respectively) . Conclusions: Patients with KOA should aim for intense physical activity and/or more than 180 minutes of exercise per week and/or weight training (bodybuilding) for relevant pain reduction and functional improvement. Level of Evidence II, Retrospective Study.

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The Income and Demographic Determinants of Physical Activity Intensity: Evidence from a Developing Country

Margin The Journal of Applied Economic Research ◽

10.1177/0973801017703498 ◽

2017 ◽

Vol 11 (3) ◽

pp. 348-364

Author(s):

Yong Kang Cheah ◽

Mohd Azahadi ◽

Siew Nooi Phang ◽

Noor Hazilah

Keyword(s):

Physical Activity ◽

Policy Development ◽

Developed Countries ◽

Jel Classification ◽

Physical Activities ◽

Physical Activity Intensity ◽

Research Attention ◽

Factors Affecting ◽

Activity Intensity ◽

Intense Physical Activity

Estimating the factors affecting participation decisions of physical activity has continuously received significant research attention. However, the effects of income and demographic factors on physical activity intensity have seldom been studied thoroughly, especially in developing countries. To fill this research gap, the income and demographic determinants of the time spent on both vigorous- and moderate-intense physical activities among Malaysian adults are estimated using a censored regression model. The results are comparable to those in developed countries, such as the USA and Australia, which show that income, age, education level and being unemployed are negatively associated with the time spent on both vigorous- and moderate-intense physical activities. Compared to females, males spend more time on vigorous-intense physical activity but less time on moderate-intense physical activity. The present study suggests that acquiring a better understanding of the factors that can affect physical activity intensity is important for policy development. JEL Classification: D01, I10, I12

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Implementing Structured Curriculum in an After-School Physical Activity Program

The Physical Educator ◽

10.18666/tpe-2021-v78-i5-10773 ◽

2021 ◽

Vol 78 (5) ◽

Author(s):

Taylor West ◽

Michael Boyd ◽

Whitney Holeva-Eklund ◽

Mina Liebert ◽

John Schuna ◽

...

Keyword(s):

Physical Activity ◽

Total Physical Activity ◽

Physical Activity Program ◽

After School ◽

Moderate Physical Activity ◽

Physical Activity Intensity ◽

School Program ◽

Activity Intensity ◽

Activity Program ◽

After School Program

The purpose of this study was to evaluate the influences of a structured after-school program on student physical activity for third- through fifth-grade students at five schools in southern Colorado. The study utilized a pretest–posttest intervention design in which six elementary schools in a low socioeconomic status school district in southern Colorado were recruited to implement a structured curriculum into their existing after-school physical activity program. Four observations at each school were taken approximately 6 weeks apart during the 2014–2015 academic year. Randomly selected students (n = 187) were measured for height and weight at each observation and wore accelerometers during after-school physical activity. Descriptive statistics and independent sample t tests were calculated for a comparison of physical activity before and after the implementation of the structured after-school program. Students wore accelerometers an average of 45.72 ± 10.28 min/session. Total physical activity increased significantly from 36.21 ± 6.41 to 41.14 ± 6.76 min/session (p < 0.001). Moderate physical activity increased significantly from 9.29 ± 3.84 to 12.10 ± 5.96 min/session (p < 0.001), whereas vigorous activity significantly decreased from 8.02 ± 4.39 to 5.54 ± 5.32 min/session (p < 0.001). Overall, implementing a structured after-school program may be beneficial in increasing total physical activity, though its role in improving physical activity intensity is questionable. Subscribe to TPE

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Accelerometer Derived Activity Counts and Oxygen Consumption between Young and Older Individuals

Journal of Aging Research ◽

10.1155/2014/184693 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 6

Author(s):

Lucas Whitcher ◽

Charilaos Papadopoulos

Keyword(s):

Physical Activity ◽

Oxygen Consumption ◽

Metabolic Rate ◽

Resting Metabolic Rate ◽

The Elderly ◽

Moderate Physical Activity ◽

Older Individuals ◽

Physical Activity Intensity ◽

Elderly Individuals ◽

Activity Intensity

The purpose of this investigation was to compare accelerometer activity counts and oxygen consumption between young and elderly individuals. Sixteen young (21.3±2.5 yrs) and sixteen elderly (66.6±2.9 yrs) participants completed 30 minutes of resting oxygen consumption to determine resting metabolic rate and four 6 min walking intensities ranging from 27 to 94 m·min−1. Resting oxygen uptake was significantly lower for the older participants. Exercise oxygen consumption was significantly higher for the elderly group. There were no significant differences in activity counts between groups at each of the exercise intensities. When using measured resting metabolic rate, activity counts of 824 and 2207 counts·min−1were associated with moderate (3 METs) physical activity intensity for the older and young participants, respectively. However, using standard resting metabolic rate (3.5 mL·kg−1·min−1), activity counts of 784 and 2009 counts·min−1were associated with moderate physical activity intensity for the elderly and young participants, respectively. These findings indicate that activity counts are similar across age groups even though the oxygen consumption of exercise is greater among elderly individuals.

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