Mostrar mensagens com a etiqueta Exercício Físico. Mostrar todas as mensagens
Mostrar mensagens com a etiqueta Exercício Físico. Mostrar todas as mensagens

segunda-feira, 9 de setembro de 2019

Bactérias bucais e benefícios do exercício físico?

Parece que eventualmente, sim:
https://zap.aeiou.pt/elixir-bucal-inimigo-exercicio-fisico-278201

Citando:
"Os cientistas repararam que a pressão sanguínea era significativamente mais baixanos participantes que gargarejaram a boca com o placebo, provando que o elixir reduz, de facto, os efeitos do exercício físico.

“Estas descobertas mostram que a síntese de nitrito pelas bactérias orais é extremamente importante para iniciar como o nosso corpo reage ao exercício durante o primeiro período de recuperação, promovendo menor pressão arterial e maior oxigenação muscular”, realçou o coautor do estudo, Craig Cutler."


quinta-feira, 24 de janeiro de 2019

Altura, sexo e longevidade

https://www.tnh1.com.br/noticia/nid/altura-impacta-na-longevidade-diz-estudo/

Citando:
"Mulheres acima de 1,79 metro que conseguem manter o peso adequado ao longo da vida estão 31% mais propensas a viver até os 90 anos, indica estudo publicado no  Journal of Epidemiology & Community Health. Os resultados também indicaram que a atividade física pode interferir na expectativa de vida: exercitar-se por sessenta minutos diários aumenta a probabilidade de chegar aos 90 anos em até 21%; no entanto, passar desse tempo não traz benefícios adicionais, pelo menos para as mulheres.

No caso do sexo masculino, altura e peso não parecem influenciar na longevidade, mas o tempo de exercício físico, sim. Os pesquisadores afirmam que homens que dedicam pelo menos noventa minutos por dia a alguma atividade física estão 39% mais propensos a viver até os 90 anos. E isso não é tudo: a cada trinta minutos a mais se exercitando, há um acréscimo de 5% de chance de atingir essa idade."


segunda-feira, 7 de maio de 2018

Exercício físico e cancro?

Parece que sim, e a todos os pacientes:
https://www.theguardian.com/society/2018/may/07/cancer-if-exercise-was-a-pill-it-would-be-prescribed-to-every-patient

Citando:
"The lead author, Prof Prue Cormie from the Australian Catholic University, said the statement was based on “indisputable” evidence. “Really we are at the stage where the science is telling us that withholding exercise from cancer patients can be harmful,” Cormie said.

“Exercise is the best medicine someone with cancer can take in addition to their standard cancer treatments. That’s because we know now that people who exercise regularly experience fewer and less severe treatment side-effects; cancer-related fatigue, mental distress, quality of life.”"


sexta-feira, 30 de março de 2018

Exercício fisico e depressão

http://visao.sapo.pt/visaomais/2018-03-27-Atencao-Ao-deixar-de-fazer-exercicio-pode-estar-a-abrir-caminho-a-uma-depressao

Citando:
"Isto porque a atividade física potencia a libertação de endorfinas, que atuam como um poderoso analgésico natural. Mas não só. De acordo com a revista Time, a prática de exercício físico desencadeia a libertação de substâncias químicas no cérebro, diretamente relacionadas com o humor - serotonina, dopamina e noradrenalina - que têm ação no alívio da dor e do stress. Funciona ainda como um escape em relação aos pensamentos negativos, motores do stress, ansiedade e, em última instância, a depressão, porque exige a total concentração da pessoa que a pratica."

segunda-feira, 26 de fevereiro de 2018

6 factores de risco para o cancro da próstata

https://www.express.co.uk/life-style/health/924382/cancer-symptoms-prostate-signs-causes

Citando:
"[Factors] include:

Age - risk rises as you get older and most cases are diagnosed in men over 50 years of age.

Ethnic group – prostate cancer is more common among men of African-Caribbean and African descent than in men of Asian descent.

Family history – having a brother or father who developed prostate cancer under the age of 60 seems to increase the risk of you developing it. Research also shows that having a close female relative who developed breast cancer may also increase your risk of developing prostate cancer.

Obesity – recent research suggests that there may be a link between obesity and prostate cancer.

Exercise – men who regularly exercise have also been found to be at lower risk of developing prostate cancer.

Diet – research is ongoing into the links between diet and prostate cancer. There is evidence that a diet high in calcium is linked to an increased risk of developing prostate cancer."


terça-feira, 20 de fevereiro de 2018

Exercício total para idosos?

https://health.spectator.co.uk/for-older-men-total-volume-of-exercise-matters-more-than-consistency/

Citando:
"Exercising for just a few minutes a day is linked to a lower risk of death in older men, according to new research published in the British Journal of Sports Medicine.

The study suggests that the total volume of exercise matters. Current exercise guidelines recommend accumulating at least 150 minutes a week of moderate to vigorous physical activity in bouts lasting longer than ten minutes. But such a pattern is not always easy for older adults to achieve, say the researchers.

This lower level of intensity is also likely to be a better fit for older men, say the researchers.

To find out if other patterns of activity might still contribute to lowering the risk of death, the researchers drew on data from the British Regional Heart Study."

domingo, 24 de dezembro de 2017

Exercício verde?

Verde e azul no exercício parecem fazer a diferença:
https://www.publico.pt/2017/12/24/sociedade/noticia/o-que-e-o-exercicio-verde-1796508

Citando:
"Fazer atividade física em ambientes naturais — o chamado “exercício verde”(green exercise) — traz benefícios acrescidos para a saúde e bem-estar. E pode ser parte da solução para um número crescente de problemas, quer de natureza ambiental quer de saúde pública."

sexta-feira, 24 de novembro de 2017

Exercício físico e cérebro

http://www.newsnation.in/lifestyle/health-and-fitness/around-the-age-of-40-aerobic-exercises-on-daily-basis-may-boost-your-memory-up-study-article-186429.html

Citando:
"Researchers concluded that though exercise has no effect on total hippocampal volume, it did significantly increase the size of the left region of the hippocampus in humans. This is how exercise benefits your brain."

domingo, 11 de junho de 2017

Importância do exercício físico (caminhadas) em pacientes com cancro e em tratamento

http://home.bt.com/news/uk-news/brisk-walk-each-day-may-cut-risk-of-dying-from-cancer-11364185676972

Citando:
"Those in the exercise group were around half as likely to die as those in the usual care group and less likely to have their disease progress, the study, which has not yet been published in a journal, suggested."
(...)
"In the second study, 992 people with stage three bowel cancer that had begun to spread were assessed twice over seven years for diet and lifestyle.

Researchers looked at how closely people followed American Cancer Society guidelines on nutrition and exercise for people with cancer. The guidelines recommend patients keep to a healthy weight, exercise at a moderate-intensity level for 150 minutes per week and eat healthy food.

The study found that compared to those people who adhered least to the guidelines, those who followed them closely had a 42% lower risk of dying and a trend towards better disease-free survival.

Erin van Blarigan, associate professor in University of California San Francisco department of epidemiology and biostatistics, who worked on the study, said it was thought that exercise may affect cancer by lowering levels of insulin and insulin resistance.

Dr Vicky Coyle, a Cancer Research UK scientist at Queen’s University Belfast, said: “Patients with advanced bowel cancer could benefit from keeping a healthy weight, being physically active, and eating a healthy diet, as this study suggests."

sexta-feira, 5 de maio de 2017

Como ganhar força em qualquer idade

A partir dos 18, the only way is down, como é sabido. Bem-vindo ao clube. Mas há exercícios para todas as idades para de alguma forma compensar a perda "programada" de massa muscular e força.

Algumas ideias para ganhar força em todas as idades:

How to build strength at any age


Ages 35-60

(...) this is the period when you are most likely to put on weight, as your metabolism slows, and your job becomes more sedentary.

"Start with some fast-walking, 20-30 minutes twice-three times per week to get some fitness. Progress to a gym membership and consider hiring a personal trainer to get you back into doing the right exercises for you. Spin classes, Zumba, and veterans sports are all good at this age for strengthening the body. Be aware of early onset arthritis. Gentle exercise will help maintain joint flexibility and muscle strength, helping to minimise the onset of joint stiffness and osteoarthritis."

Ages 60+

Exercising when you're over 60 is tougher, as the muscles will start to atrophy (waste away) if you don't use them. (...).

"One of the easiest ways to strengthen the legs is to balance. Stand on one leg for two minutes, and use a wall or table for support. Repeat twice each side and do this once per day. If you can comfortably perform this exercise, try doing it with your eyes shut for 2 minutes holding on to a wall for support. Balancing is fantastic to build strength in the thighs, buttocks, calves and also helps core strength. Strengthening exercises such as body weight exercises and resistance exercises are a great way to improve bone density, and muscle strength. This has two benefits when it comes to falling. First having strong muscles will help prevent falls. Second, having strong bones will help prevent a fracture if you were to have a fall."

The most common fracture sites are the wrist, hip and spine, all of which are very common in the elderly. Indeed, it's thought that roughly one in three over 65s suffer a fall each year - previously estimated to cost the NHS £4.6 million a day. With this in mind, prevention is key."
(...)

2. Strength train

Don't be afraid to strength train. Strength training can involve body weight exercises to start with. It might be as simple as a press-up against a wall, or a sit-down squat on a chair. As you progress, body weight exercises can become more challenging like performing a kneeling press-up, or a plank, and you don't even need a gym."



terça-feira, 2 de maio de 2017

Qual o melhor exercício à medida que vamos envelhecendo?

Qual o melhor exercício para músculos envelhecidos?
R: Treino intercalado (vs. Levantamento ou corrida normal).

Citando:
"There were some unsurprising differences: The gains in muscle mass and strength were greater for those who exercised only with weights, while interval training had the strongest influence on endurance.
But more unexpected results were found in the biopsied muscle cells. Among the younger subjects who went through interval training, the activity levels had changed in 274 genes, compared with 170 genes for those who exercised more moderately and 74 for the weight lifters. Among the older cohort, almost 400 genes were working differently now, compared with 33 for the weight lifters and only 19 for the moderate exercisers.
Many of these affected genes, especially in the cells of the interval trainers, are believed to influence the ability of mitochondria to produce energy for muscle cells; the subjects who did the interval workouts showed increases in the number and health of their mitochondria — an impact that was particularly pronounced among the older cyclists."

Histórico: 2017-05-02, alterado o título, lig. refraseado, mais tags.

quinta-feira, 16 de março de 2017

Inquérito alimentar nacional (PT)

Os resultados do inquérito alimentar nacional realizado em 2015 e 2016, actualizando o último (de 1980) mostram um país em que 6 em cada 10 são obesos (ou pré-obesos) e mostra ainda que não seguimos a dieta mediterrânea (carne a mais, açúcar a mais, sal a mais, álcool a mais):

Infografia: http://www.dn.pt/portugal/interior/ha-5-de-idosos-em-portugal-que-bebem-mais-de-um-litro-de-alcool-por-dia-5727718.html#media-2

http://visao.sapo.pt/opiniao/bolsa-de-especialistas/2017-03-16-Ja-temos-a-radiografia-alimentar-de-Portugal

https://www.publico.pt/2017/03/16/sociedade/noticia/portugueses-comem-muita-carne-e-abusam-do-acucar-1765365

http://www.dn.pt/portugal/interior/ha-5-de-idosos-em-portugal-que-bebem-mais-de-um-litro-de-alcool-por-dia-5727718.html

sexta-feira, 24 de fevereiro de 2017

Estudos para todos os gostos: Exercício físico e apetite sexual

Vários estudos na ligação seguinte alguns com resultados surpreendentes, outros nem por isso (como o que motiva o título desta notícia):
http://www.brisbanetimes.com.au/lifestyle/health-and-wellbeing/fitness/intense-exercise-lowers-mens-libido-study-finds-20170224-gukf9j.html

Citando:
"Exercise is meant to make us hot-blooded, but too much of it can sap our sex drive, a new study has found.

Research has tended to focus on how our sex drive benefits from regular exercise. Aside from the confidence-boost exercise gives us (and confidence leads to greater sexual satisfaction), there are the physiological effects. "
(...)
"it is not the first study to show the "negative impact" of endurance exercise and elite sport.

She says there are two reasons for this – the psychological and the physical. It is known that intense exercise can negatively impact testosterone (which affects both sex drive and sperm count), but Quirk adds:

"There's a parallel between immunological function and sexual interest and there is a negative effect – in elite sports and endurance athletes – on immunological function."

Quirk adds that moderate activity provides "a reasonable amount of benefit" but when we start pushing ourselves hard for extended periods of time, we become mentally and physically "spent".

"Sex will be very low on the list," she says. "

quinta-feira, 23 de fevereiro de 2017

Exercício físico como a melhor maneira de evitar a reincidência de cancro da mama


Mais uma excelente revisão das notícias (e estudo) que referem que o exercício físico é a melhor maneira de prevenir a reincidência do cancro da mama. As conclusões do perito do NHS são que o estudo é interessante do ponto de vista de analisar o impacto do estilo de vida sobre o cancro da mama apesar de ter algumas limitações (bias effect, etc.):
http://www.nhs.uk/news/2017/02February/Pages/Exercise-most-proven-method-to-prevent-return-of-breast-cancer.aspx

Citando:
"The researchers' review of evidence found that physical activity had the strongest reported effect on reducing the risk of breast cancer recurring and dying from breast cancer.

Following the recommended 150 minutes of moderate to vigorous exercise or 75 minutes of vigorous exercise per week guidance, as well as two to three weekly sessions of strength training, can help reduce the risk of breast cancer returning and death from the disease.

The effects of treatments such as surgery and chemotherapy can take a toll on motivation to exercise. But clinical guidelines recommend a gradual return to regular exercise."

sábado, 21 de janeiro de 2017

Mais sobre o exercício retardar o envelhecimento (e os telómeros)

http://www.ibtimes.com/how-look-younger-active-lifestyle-exercise-slows-aging-process-older-women-health-2478928
Citando:
"This study, which was published in the American Association for the Advancement of Science's journal, was able to identify the specific molecule, called NRF1, responsible for maintaining telomeres. Exercise, spending 45 minutes on a stationary bicycle in this case, reportedly boosted the levels of NRF1 and kept the cells "younger."

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"Think about NRF1 like varnish on nails,” Decottignies told TIME Magazine. “You cannot change the nail, but you can change the varnish again and again. What you’re doing is refreshing and replacing the old section with new protective molecules at the telomeres.”"

sexta-feira, 20 de janeiro de 2017

Estar o dia todo sentado acelera o envelhecimento (afecta ADN)

Artigo com métricas quantitativas interessantes relativas aos telómeros (e crítico negativamente acerca da utilidade do estudo sobre estar sentado acelerar o envelhecimento do ADN):
http://www.nhs.uk/news/2017/01January/Pages/Sitting-down-all-day-may-accelerate-DNA-ageing.aspx


Citando:
"Telomeres are measured in the small sections of nucleic acids that make up DNA, known as base pairs. 
Among women in the study who did less than about 40 minutes of physical activity a day, those who sat longest had shorter telomeres by an average 170 base pairs.
The researchers say telomeres shorten at a rate of 21 base pairs a year – using a rough "back of a fag packet" calculation, 170 equals about eight years.
Sitting time did not seem linked to telomere length for women who did at least 30 minutes of physical activity a day."