How does physical manipulation (e.g. massage) relax muscles? Does pressure create physiological changes in the tissue? | AskScience Blog

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Friday, January 15, 2016

How does physical manipulation (e.g. massage) relax muscles? Does pressure create physiological changes in the tissue?

How does physical manipulation (e.g. massage) relax muscles? Does pressure create physiological changes in the tissue?


How does physical manipulation (e.g. massage) relax muscles? Does pressure create physiological changes in the tissue?

Posted: 14 Jan 2016 08:41 PM PST

Maybe another way to put this might be: How much of muscle relaxation is physiological and how much is psychological?

Edit: Please provide credible sources if possible. Perhaps understandably, this field is full of personal theories without scientific support, so if you could provide links to appropriate sources of research, that would be extremely valuable

submitted by superhelical
[link] [114 comments]

Can someone go through early life and puberty in a coma?

Posted: 15 Jan 2016 12:52 AM PST

What would the physical consequences be if someone being born in a coma (or going into a coma a few days after birth) and living in a coma for the first 18 years. If that person woke up would they be able to catch up with brain and muscle development? Would it be possible to stimulate muscle and organ development or would the organs fail?

submitted by leparazitus
[link] [17 comments]

Are the orbital planes of most solar systems in the Milky Way coplanar with the galaxy? And is there any benefit in defining a galactic "up" and "down" convention?

Posted: 15 Jan 2016 03:47 AM PST

Why do those stripes form besides an/this nuclear blast? (Camp Desert Rock nuclear test)

Posted: 14 Jan 2016 07:17 AM PST

To the left of the atomic cloud

Screenshot

edit: tfw your thread explodes but you get no karma, thanks for all the answers!

submitted by I_am_a_Failer
[link] [242 comments]

Is there a finite number of possible fingerprints?

Posted: 15 Jan 2016 06:34 AM PST

If so, how likely is it that there are two people in the world with identical fingerprints alive at the same time?

submitted by LynxSys
[link] [2 comments]

If you were thousands of feet below the ocean's surface, would a few photons still occasionally make it down to you?

Posted: 14 Jan 2016 07:13 PM PST

I know that it's pitch black beyond a certain depth in the ocean, and I'm guessing that it becomes increasingly difficult to find a single photon at certain depths, but do any photons find their way down into zones which are otherwise pitch black? What's the farthest down we would expect to find a single photon?

submitted by bdubs17
[link] [21 comments]

Is the crude oil extracted from North America the same chemical makeup as oil from the Middle East?

Posted: 14 Jan 2016 04:54 PM PST

Is there a way to insulate/shield against an electromagnetic field the way lead and other dense material can shield against radiation?

Posted: 15 Jan 2016 03:34 AM PST

The newest global temperatur map released by Berkeley Earth is terrifying to say the least. But I'm curious about what is happening in the north Atlantic?

Posted: 15 Jan 2016 01:30 AM PST

There is a record cold spot in the middle of the North Atlantic, between Greenland and Iceland, and I am curious if it's just a result of the chaotic nature of the climate short-term, or if it has some significance. I'm from the Faroe Islands, so I may be biased.

Link to the temperatur map.

submitted by baldman1
[link] [2 comments]

What components on the Opportunity rover have failed so far and how has that affected it's usefulness?

Posted: 14 Jan 2016 11:45 AM PST

As a follow-up question, assuming the solar panels continue to stay clean and absorb enough sunlight, which component is most likely to be the killing blow upon failure?

submitted by RubberTrucky
[link] [4 comments]

[Physics] why do teabags inflate when you pour hot water on them?

Posted: 15 Jan 2016 06:28 AM PST

I've noticed that when I pour hot water into a tea cup with a tea bag at the bottom, the tea bag inflates. Why is this?

submitted by UltimateTrainRape
[link] [2 comments]

Are there any quantifiable long term (5+ years) effects of exam-related stress?

Posted: 14 Jan 2016 11:29 AM PST

In particular I'm thinking of the increased emphasis (over the last couple of decades) being placed on exam results as the means of getting a job and leading the idealised consumerism-based lifestyle, and whether failure to meet these goals has any effect on well-being (psychological or otherwise).

submitted by Sadryon
[link] [4 comments]

What happens to pharmaceutical medicine when they are past their expiration date?

Posted: 14 Jan 2016 05:37 PM PST

Does the chemical composition change to make it less effective? Or maybe toxic?

Are these not stable compounds? Do environmental factors have an effect?

How is the expiration date calculated?

submitted by rugbyslide
[link] [10 comments]

When I move, do I give off ionizing or non-ionizing radiation?

Posted: 14 Jan 2016 05:59 PM PST

Radiation is the transfer of energy in waves, so anything that moves gives it off. But is that radiation ionizing (bad)?

submitted by Cacts
[link] [8 comments]

How do processes that change copper's surface color and appearance affect it?

Posted: 14 Jan 2016 12:29 PM PST

This is actually a collection of several questions related to copper I'm trying to get my head around, regarding patina and the gasoline-on-concrete look heated copper has.

Patina

Is patina a form of rust, or is rust specifically iron?

If in a high corrosion environment, like a dock, would patina form faster, like iron rust does, or would the metal corrode another way?

Heated copper

Is this a reaction to a sudden temperature change, or would slowly heating copper have the same effect?

Does the thickness/density of the copper put on the flame change anything?

Can you tell anything about the copper from what pattern forms, or is it completely dependent on the heat?

Does the flame have to touch the copper to change its color?

How does cast copper etc. keep its uniform copper color, despite being exposed to such heat? Does the oxidation have to be cleaned off, after?

Can the oxidation colors be cleaned off easily?

& combo

What happens if you heat tarnished copper? How does the patina react to the flame?

Does heating copper protect it from forming a patina? Does it affect the type and color of patina that ensues?

I know there's copper cookware and it can work as a heat diffuser. Are they specifically treated to not develop the coloring when heated? Is it just expected from having a copper utensil?

Any answer helps! It's a hodge-podge, here.

submitted by joddish
[link] [4 comments]

Why are electron orbitals shaped the way they are?

Posted: 15 Jan 2016 03:56 AM PST

What causes "dormant" clouds to be white and "storm" clouds to be grey?

Posted: 14 Jan 2016 08:18 PM PST

Does the order of your GPU heatsinks, CPU heatsink, radiators, etc. make any difference in a water cooling loop?

Posted: 14 Jan 2016 03:16 PM PST

My friend says it doesn't because the water will all reach equilibrium according to the laws of thermodynamics.

I say having a big radiator right before the GPUs would cool it faster than putting the radiator anywhere else.

Could you help us settle this?

submitted by EpicGibs
[link] [11 comments]

Is it immposible to have more than 126 protons in a nucleus ?

Posted: 14 Jan 2016 10:51 PM PST

I read that it is impossible to have more than 126 protons in a nucleus because the repulsion of the protons overcomes the strong force. Also I have seen a video about quantum tunneling (minutephysics) and they mentioned that due to quantum tunneling there is a slim chance to find an electron in the nucleus. So is it possible to stabilize the nucleus by adding electrons ? I don't compleatly grasp the duality of the electron and I'm not sure if it will stay in the nucleus. I'm a 10th grade student so if my question is stupid and I lack some common physics knowledge you are free to roast me.

submitted by zarie125
[link] [4 comments]

Would a bullet travel slower through a tank filled with heavy water (deuterium) as opposed to regular water?

Posted: 14 Jan 2016 02:37 PM PST

How do multiple copies of a gene work together?

Posted: 14 Jan 2016 04:48 PM PST

I was recently reading The Secret of Our Success and one part mentioned that humans possess 6 to 8 copies of a certain gene related to a protein involved in digesting starches while chimpanzees only possess a couple of copies. That made me wonder just how multiple copies of genes work. Would all the copies of the gene generally be being transcribed at a given time? If not why not just increase the amount of time that gene spends being activated? Would there tend to be any interesting genetic variation between the different copies a person might possess? If they aren't all active at the same time, could different copies have different activation criteria?

submitted by symmetry81
[link] [4 comments]

What is the difference between an alpha particle and a Helium atom?

Posted: 14 Jan 2016 05:42 PM PST

They both have 2 protons and 2 neutrons, so I was wondering if we can bottle and use alpha particles in the same way we use helium. For example, can inhaling an alpha particle cause our voices to go higher?

submitted by MrFroYo
[link] [12 comments]

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