We all know the type: The friend or colleague who stays slim and trim without much effort and despite eating the same high-calorie fare that causes everyone else to gain weight. As it turns out, the way the muscles of the inherently thin work may give them the edge.
Daily physical activity is an inherited trait with a strong association to how fat or thin a person is. Chaitanya K. Gavini et al. previously found that aerobic capacity is a major predictor of daily physical activity level among humans and laboratory animals. In their new study, they compared female rats with high aerobic capacity (genetic tendency toward leanness) or low aerobic capacity (genetic tendency toward obesity) to investigate how muscle physiology affects leanness.
Though the rats in each group were similar in weight and lean body mass, the rats with a high aerobic capacity were consistently more active than the low capacity rats. While all the rats had similar energy expenditures when at rest, big differences in energy expenditure (calorie burn) occurred during mild exercise. The researchers found the muscles of rats with lean genes demonstrated “poor fuel economy,” meaning that they burned more calories when performing the same exercise as those with fat genes. This may be due to more lean rats having higher levels of proteins that support energy expenditure and lower levels of proteins that encourage energy conservation and/or an increased sympathetic nervous system role in powering the muscles of lean rats.
According to the researchers: “This has implications for how we consider metabolism when attempting to prevent or treat obesity. Targeting of pathways maximizing skeletal muscle energy use during physical activity may take advantage of already existing mechanisms that are endogenously employed to a greater extent in naturally lean people.”
The article “Leanness and heightened nonresting energy expenditure: role of skeletal muscle activity thermogenesis” is published in the March 2014 issue of the American Journal of Physiology — Endocrinology and Metabolism.
Story Source:
The above story is based on materials provided by American Physiological Society. Note: Materials may be edited for content and length.
Original story here.
Fitness News — Sciencedaily
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She’s Mezzo-Soprano
I went the through the whole thing
R.I.P. headphone users :'(
Ppl say i have god voice but i sing wrongly
But my voice isn’t like that :(
1:32 she dun busted my ears. to bad i was wearing headphones
she’s good!
Omg this works… gotta keep practicing over and over
goog
I had to stop at 1:28 :(
Im sorry but your voice is awful vert strong but it doesnt sound good and
thanks now i have a headache and an ear infection! Actually not joking!
My music teacher does this with “la” instead of “eeh.” Its easier but you
need to make sure your mouth retains a round shape. I want to sing well so
terribly cx
Like if you’re homealone :D
can we get some comments from people who have actually attempted this and
did it successfully? that’d be great thanks
It looks like they’re floating in purgatory.
yeah its simple exersise as you said..
piano man was like…… can i go now or what?? 2:08
This exercise is literally my best friend. I would not have the voice I
have now if I hadn’t done this now for three years. Hell, I wish I started
earlier. THIS WORKS PEOPLE.
I did it and I warmed up my voice and now I am ready to sing
Soprano? Or can you do it all? I used to sing alto when I was younger but
would love to be able to sing again.
No real “heavy”, but works well,
I did some testing lifting free-weights with the bands and found each band maxed out at 15, 22, and 25 pounds for light, medium, and heavy respectively. The problem is that stretched to waste and shoulder height, the medium and heavy bands are almost identical in resistance at 12 pounds at waste and 17 pounds at shoulder height. In order to have a true heavy band, I’ll have to combine the light and the heavy for a 40 pound band.
Pros:
– thick material
– 5 feet in length and will stretch 3 times as long
– can provide a wide range of resistance from 7 to over 40 pounds with some creative thinking
– much cheaper than free-weights
Cons:
– medium and heavy bands are also identical
– requires using multiple bands for significant resistance
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