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Saturday, April 16, 2011

Building Muscle Doesn't Require Lifting Heavy Weights, Study Shows:

Article from www.sciencedaily.com:The findings are published in PLoS ONE.
"Rather than grunting and straining to lift heavy weights, you can grab something much lighter but you have to lift it until you can't lift it anymore," says Stuart Phillips, associate professor of kinesiology at McMaster University. "We're convinced that growing muscle means stimulating your muscle to make new muscle proteins, a process in the body that over time accumulates into bigger muscles."
Phillips praised lead author and senior Ph.D. student Nicholas Burd for masterminding the project that showed it's really not the weight that you lift but the fact that you get muscular fatigue that's the critical point in building muscle. The study used light weights that represented a percentage of what the subjects could lift. The heavier weights were set to 90% of a person's best lift and the light weights at a mere 30% of what people could lift. "It's a very light weight," says Phillips noting that the 90-80% range is usually something people can lift from 5-10 times before fatigue sets in. At 30%, Burd reported that subjects could lift that weight at least 24 times before they felt fatigue.
"We're excited to see where this new paradigm will lead," says Phillips, adding that these new data have practical significance for gym enthusiasts but more importantly for people with compromised skeletal muscle mass, such as the elderly, patients with cancer, or those who are recovering from trauma, surgery or even stroke.

Reflections: I was very surprised and shocked after I read this article. The article stated that a new study conducted at McMaster University has shown that a similar degree of muscle building can be achieved by using lighter weights. You just need your muscles to feel fatigue, and you would have your muscles. However, the bad thing is that you need to raise the weight more times. This research also says that other than having practical significance for gym enthusiasts, it would also benefit people with compromised skeletal muscle mass, such as the elderly, patients with cancer, or those who are recovering from trauma, surgery or even stroke. Therefore, I think that these new discovery benefits humans a lot and I would not need to train so hard to get muscles as light weights could also do! However, one still need to put in effort to train muscles as you would also need more time to train muscles in the new method as you need to raise lighter weights more times!

Friday, April 15, 2011

Free Statins With Fast Food Could Neutralize Heart Risk, Scientists Say:

Article from www.sciencedaily.com: Statins reduce the amount of unhealthy "LDL" cholesterol in the blood. A wealth of trial data has proven them to be highly effective at lowering a person's heart attack risk.
In a paper published in the American Journal of Cardiology, Dr Darrel Francis and colleagues calculate that the reduction in cardiovascular risk offered by a statin is enough to offset the increase in heart attack risk from eating a cheeseburger and a milkshake.
Dr Francis, from the National Heart and Lung Institute at Imperial College London, who is the senior author of the study, said: "Statins don't cut out all of the unhealthy effects of burgers and fries. It's better to avoid fatty food altogether. But we've worked out that in terms of your likelihood of having a heart attack, taking a statin can reduce your risk to more or less the same degree as a fast food meal increases it."
One statin, simvastatin, is already available in low doses (10mg) over the counter at pharmacies without a prescription. Other statins are so far only prescribed by doctors, and limited by cost to patients at particular risk of heart attack or stroke. However, the cost of the tablets has fallen sharply in recent years (from ~£40/month to ~£1.50/month), such that the cost to the NHS of seeing a doctor is much greater than the cost of the tablet.
"It's ironic that people are free to take as many unhealthy condiments in fast food outlets as they like, but statins, which are beneficial to heart health, have to be prescribed," Dr Francis said.
Statins have among the best safety profiles of any medication. A very small proportion of regular statin users experience significant side effects, with problems in the liver and kidneys reported in between 1 in 1,000 and 1 in 10,000 people.
"Everybody knows that fast food is bad for you, but people continue to eat it because it tastes good. We're genetically programmed to prefer high-calorie foods, and sadly fast food chains will continue to sell unhealthy foods because it earns them a living.
"It makes sense to make risk-reducing supplements available just as easily as the unhealthy condiments that are provided free of charge. It would cost less than 5p per customer -- not much different to a sachet of ketchup.
"When people engage in risky behaviours like driving or smoking, they're encouraged to take measures that minimise their risk, like wearing a seatbelt or choosing cigarettes with filters. Taking a statin is a rational way of lowering some of the risks of eating a fatty meal."
Studies have shown a clear link between total fat intake and blood cholesterol, which is strongly linked to heart disease. Recent evidence suggests that trans fats, which are found in high levels in fast food, are the component of the Western diet that is most dangerous in terms of heart disease risk.
Dr Francis and his colleagues used data from a previous large cohort study to quantify how a person's heart attack risk increases with their daily intake of total fat and trans fat. He compared this with the decrease in risk from various statins, based on a meta-analysis of seven randomised controlled trials.
The results showed that most statin regimes are able to compensate for the relative risk increase from eating a cheeseburger and a small milkshake.
The researchers note that studies should be conducted to assess the potential risks of allowing people to take statins freely, without medical supervision. They suggest that a warning on the packet should emphasise that no tablet can substitute for a healthy diet, and advise people to consult their doctor for more advice.

Reflections: For those who like to eat fast food, this would be good news for them! Fast food Restaurants are giving out free Statin to reduce the risk of heart diseases like heart attack. What is Statin? Statin is a type of medicine that reduces the amount of unhealthy "LDL" cholesterol in the blood. A wealth of trial data has proven them to be highly effective at lowering a person's heart attack risk. Those who like to eat fast food would be over the moon and eat more from now on. However, in my opinion, eating fast food that increases cholesterol is still unhealthy and bad for us even though now we are given Statin. Statin only reduces the risk of getting heart diseases, but it does not eliminate the possibility of getting heart diseases. Anyway, there are always other vices for this, for example: fast food is too salty, less vitamin C, so on and so forth. Therefore, in a nutshell, I think that we should still eat less fast food as it still harms our body.