The best long-term perfect posture is subjective due to the variety of body types, incorrect posture differs from person to person and person's proper posture can be incorrect posture for someone else and vice versa.
Usually the good sitting posture can be determined by the following methods:
Support your back to avoid back pain.
Adjust your chair.
Your body uses motion in several ways to maintain function.
One of them is called muscle milking
Muscle Milking is the process where blood is pushed back up to your heart by your muscles compressing on the veins. Since the veins have valves to ensure one-way direction, compression (usage) of the muscles causes it to move up, against gravity.
Lymph also ...
There is some research that has been done on this, as well as some more anecdotal/lifestyle based evidence.
There is a study done in 1914, published in the American Journal of Physiology, where they examined the carbon dioxide tension of the blood after eating. CO2 tension is a byproduct of food metabolism, and in high amounts can cause dyspnea, acidosis ...
So there are a few things making this a difficult question to answer. Much of the in-depth research hasn't been done on healthy individuals (biomechanics of the foot), but where there's something wrong (pathomechanics of the foot). There is also a difference between what is theoretically best (found here) and what people actually do (sort of found here). ...
Short answer: there is no best long-term sitting posture. If there is any, take care of posture (I'd risk to say upright is best), and move every certain amount of time in the chair and/or around.
I'm for positive responses so let me elaborate a bit more. All cautious considerations, as kenorb properly states, are ok. However, even if some of those ...
When we sit we eat slower and digest the food more properly, because we're more calm. When standing we do things faster, hence we are less focused what we eat and not chew food properly by adding saliva and its digestive enzymes which helps to digest and metabolise your food more efficiently. More stress could also have negative effect on your esophagus. ...
Sitting for long periods of time is unhealthy because you do not get good blood circulation. Most of your muscles are not moving. Passengers are recommended to get up and walk around on a long haul flight every few hours for the same reason.
In serious cases, the blood may clot in the legs. This is known as deep vein thrombosis. I have heard people who, ...
Here's an paper that might help you:
The short conclusion is
"Application of the scapular brace improved shoulder posture and
scapular muscle activity, but EMG changes were highly variable. Use of
a scapular brace might improve shoulder posture and muscle activity in
overhead athletes with poor ...
I would say consult a doctor to confirm the problem. Removal of the Uterus usually doesn't cause to much of a shift, but I am sure there are a very few instances when it does.
The uterus typically takes up a very small space in the abdomen or
pelvis. After a hysterectomy, the other abdominal organs shift
slightly to fill the space. During the surgery,...
There are a few tricks which can make the cross-legged position comfortable:
Sitting more "crossy" - if you are not flexible enough to align your heels one in front of another, cross your ankles or even cross your shins.
Elevate the hips above your knees (by using a cushion, blanket or yoga-block)
Support your knees (again using cushions or something ...
There are actually studies about sitting in a regular chair vs. an exercise ball. Here and here for example. Neither seems to show net benefits. The limitations of both studies are small sample size and short time period of observation.
Anecdotally, I know at least two people who both have done it and they seem happy with it (but this is recent, so I can't ...
Check with doctor first.
1 - i think you have spin or disk hernia near L5-S1 or so
2 - is your posture poor or stable?
3 - if you sneeze (simulate real sneeze) does the pain triggers?
Drink lot of water if the pain is like you explained from belly to pelvic muscle
First, congrats on actually being more comfortable sitting up-right. I've yet to master the talent.
In short, I can't say the relation between old piano players in great health is directly related to or, is the result of a piano bank and an upright posture.
That being said, a majority of the money spent on office chairs are for those ergonomic adjustable ...
From my experience, it is better to change postures while you sit long.
Most often, I sit in a posture similar to below yoga posture 'Padmasana' in my chair, but not for so long, just for 5 or 10 minutes. It really helps to reduce the tension on the back.
Actually, it need not be in exactly this position, just cross your legs as you can. After 5 or 10 ...