Sep. 30, 2024
If you are looking for more details, kindly visit FreErgo.
"Leaning" redirects here. For the surname, see Leaning (surname)
"Orthostasis" redirects here. For posturally transient low blood pressure, see Orthostatic hypotension
Standing womenStanding, also referred to as orthostasis, is a position in which the body is held in an upright (orthostatic) position and supported only by the feet. Although seemingly static, the body rocks slightly back and forth from the ankle in the sagittal plane, which bisects the body into right and left sides. The sway of quiet standing is often likened to the motion of an inverted pendulum.[1]
Standing at attention is a military standing posture, as is stand at ease, but these terms are also used in military-style organisations and in some professions which involve standing, such as modeling. At ease refers to the classic military position of standing with legs slightly apart, not in as formal or regimented a pose as standing at attention. In modeling, model at ease refers to the model standing with one leg straight, with the majority of the weight on it, and the other leg tucked over and slightly around. There may be a time when a person is standing, where they lose control due to an external force or lack of energy, where they accelerate to the ground due to gravity. This is known as "falling" and may result in injuries around the part of the body that made contact with the ground.
[
edit
]
Standing posture relies on dynamic rather than static balance. The human center of mass is in front of the ankle, and unlike in tetrapods, the base of support is narrow, consisting of only two feet. A static pose would cause humans to fall forward onto the face.[2] In addition, there are constant external perturbations, such as breezes, and internal perturbations that come from respiration. Erect posture requires adjustment and correction. There are many mechanisms in the body that are suggested to control this, e.g. a spring action in muscles, higher control from the nervous system or core muscles. Humans begin to stand between 8 and 12 months of age.
A child learning to stand[
edit
]
Traditionally, such correction was explained by the spring action of the muscles, a local mechanism taking place without the intervention of the central nervous system. Recent studies, however, show that this spring action by itself is insufficient to prevent a forward fall. Also, human sway is too complicated to be adequately explained by spring action. [3][4]
[
edit
]
According to current theory, the nervous system continually and unconsciously monitors our direction and velocity. The vertical body axis alternates between tilting forward and backward. Before each tilt reaches the tipover point, the nervous system counters with a signal to reverse direction. Sway also occurs in the hip, and there is a slight winding and unwinding of the lower back.[5][6]
An analogy would be a ball that volleys back and forth between two players without touching the ground. The muscle exertion required to maintain an aligned standing posture is crucial but minimal. Electromyography has detected slight activity in the muscles of the calves, hips and lower back.[7]
[
edit
]
The core muscles play a role in maintaining stability. The core muscles are deep muscle layers that lie close to the spine and provide structural support. The transverse abdominals wrap around the spine and function as a compression corset. The multifidi are intersegmental muscles. Dysfunction in the core muscles has been implicated in back pain.[8][9]
[
edit
]
Some investigators have replaced the ankle inverted pendulum analogy with a model of double linked pendulums involving both hip and ankle sway.[10] Neither model is accepted as more than an approximation. Analysis of postural sway shows much more variation than is seen in a physical pendulum or even a pair of coupled pendulums. Furthermore, quiet standing involves activity in all joints, not just the ankles or hips.[11]
In the past, the variation was attributed to random effects.[12] A more recent interpretation is that sway has a fractal structure.[13][14][15] A fractal pattern consists of a motif repeated at varying levels of magnification. The levels are related by a ratio called the fractal dimension. It is believed that the fractal pattern offers a range of fine and gross control tuning. Fractal dimension is altered in some motor dysfunctions.[16] In other words, the body cannot compensate well enough for imbalances.
[
edit
]
Although standing per se is not dangerous, there are pathologies associated with it. One short term condition is orthostatic hypotension, and long term conditions are sore feet, stiff legs and low back pain.
[
edit
]
Orthostatic hypotension is characterized by unusually low blood pressure when the patient is standing up.
It can cause dizziness, lightheadedness, headache, blurred or dimmed vision and fainting, because the brain does not get sufficient blood supply. This, in turn, is caused by gravity, pulling the blood into the lower part of the body.
Normally, the body compensates, but in the presence of other factors, e.g. hypovolemia, diseases and medications, this response may not be sufficient.
There are medications to treat hypotension. In addition, there are many lifestyle advisories. Many of them, however, are specific for a certain cause of orthostatic hypotension, e.g. maintaining a proper fluid intake in dehydration.
[
edit
]
Prolonged still standing significantly activates the coagulation cascade, called orthostatic hypercoagulability. Overall, it causes an increase in transcapillary hydrostatic pressure. As a result, approximately 12% of blood plasma volume crosses into the extravascular compartment. This plasma shift causes an increase in the concentration of coagulation factors and other proteins of coagulation, in turn causing hypercoagulability.[17]
[
edit
]
Characterized by fast (12&#;18 Hz) rhythmic muscle contractions that occur in the legs and trunk immediately after standing. No other clinical signs or symptoms are present and the shaking ceases when the patient sits or is lifted off the ground. The high frequency of the tremor often creates a rippling effect on the leg muscles while standing.
[
edit
]
Standing per se does not pose any harm. In the long term, however, complications may arise.
[
edit
]
Pages displaying short descriptions of redirect targets
Contact us to discuss your requirements of adjustable electric computer desk. Our experienced sales team can help you identify the options that best suit your needs.
[
edit
]
The fundamental question, What mechanism do standing desks use?, has diverse answers. Depending on the type of standing desk you choose, it may operate via a manual or electric mechanism.
To answer this question more efficiently, we will dive into their differences and finally, the components that make up these mechanisms.
Among the various mechanisms of standing desks, the pneumatic counterbalance method has a key role. It employs a gas-filled cylinder, aiding in lifting the work surface.
Much like this, a counterpart system using spring tension facilitates the elevation of the desk. It operates on a hydraulic principle where gas or fluid flows through or surrounds a piston, thereby balancing pressure on both sides. These mechanisms make adjusting your desk smooth and effortless.
When it comes to the type of motor used in standing desks, typically there are two variants incorporated. Firstly, a single motor runs one vertical leg of the desk, offering basic functionality.
Secondly, dual motors enhance stability and the ability to handle heavier weight, powering two columns independently. With a dual-motor setup, it grants greater stability and a larger lifting capacity. Depending on the quality of the desk, the longevity of the motor varies greatly.
For a more in-depth comparison between the two, you can refer to our article on Single vs. Dual Motor Standing Desk: Which Is Better?
When it comes to deciding between single motor or dual motor for your standing desk, your priority would typically lie in your desktop's weight load.
Desk structures equipped with two motors undeniably offer a better balance for larger burdens. Two motors can provide a more stable and smooth adjustment, which is crucial when handling substantial load capacities.
Standing desks powered by a single motor tend to exhibit a fair level of reliability. They often have adequate lifting capacity suitable for common use cases.
Motors in these desks are embedded with hall sensors- novel mechanisms that observe the number of turns, as well as their direction made by the motor. This makes single motor desks efficient in both functionality and dependability despite handling less weight as compared to their dual-motor counterparts.
Whether you choose a manual or an electric adjustable desk, both provide the flexibility to adjust your workspace to your comfort. But the core difference lies in the adjustment method.
Electric standing desks use a control panel to drive their motorized lifting columns on user demand. Hence, standing desk adjustments are as effortless as pressing a button.
Conversely, with manual standing desks, you will generally have to engage in a manual operation (such as rotating a hand-crank) to adjust your desk's height. Therefore, considering convenience and ease of usage, electric standing desks have an edge over their manual counterparts.
For more details on these three's differences, head on over to our Electric vs. Manual Crank vs. Converter Comparison.
{{ spec_dual_desk_frame }}
In environments where the regular power supply is unavailable or electric usage might pose a health risk, manual standing desks find their use.
These desk types use the manual turning of a crank handle for height adjustments. The mechanism is simple yet effective&#;turn the handle, change the height. Moving up or down, the path is all in your hands.
Standing desks, especially manual types, operate devoid of electronic components, relying on a structured system for height adjustment.
It's important to note that each model of manual standing desk features a variety of components designed for this purpose. These components may include:
A sophisticated mechanical structure called an electric desk lift, made possible by electric lifting columns, is at the core of an electric adjustable desk's functionality. These raising structures replace traditional desk legs.
But unlike ordinary desk legs, these special columns empower users to alter desk height on-demand. The primary operator of this elevation control is the control system. This crucial system fulfills your command to increase or decrease the table height.
Your input gets translated into an electrical signal that activates the motors inside the lifting columns to adjust your desk to the desired height. Hence, at the touch of a button, you can transition your regular desk into a standing desk!
Standing desks that employ electronic motors for height-adjustment boast of greater dependability compared to their hand-crank counterparts. Why? This leans back on our main topic of interest - the motor. Electronic standing desks eliminate the load-balancing issues that manual adjustable models can suffer from, thanks to their electric motors.
With the touch of a button, you can control the descent or ascent of your desk without breaking a sweat. This motor-driven operation is a game-changer and makes it the ideal choice.
Turning a traditional desk into an adjustable standing desk involves using electric lifting columns. An electric motor powers these columns, replacing static legs and powering the desk's height adjustment capability.
Operating an electric height adjustment desk is incredibly seamless. As previously noted, the control system plays a vital role in desk operations. You will mostly find a control panel (often located on the desk's side) containing buttons for raising or lowering your desk.
By pressing these, you command the control system to trigger the electric lift and adjust the height.
Yes, electric adjustable desks need a power source to operate since their primary mechanism relies heavily on electricity for control and actuation. Typically, they are designed to plug into standard wall outlets.
Nevertheless, some manufacturers may offer battery packs to power the desk. Understandably, these may lower the load capacity and slow the desk's operational speed.
{{ spec_dual_hardwood_desk }}
Generally, height-adjustable standing desks demonstrate remarkable weight-handling capabilities. Many of these versatile pieces are capable of supporting loads ranging from 150 to 310 pounds.
This capacity is robust enough for typical office essentials. An added advantage lies in desks equipped with dual-motor systems, which offer increased lifting power and reduce back discomfort.
As a point of reference, the average desk registers 42 pounds and accommodates a load of roughly 300 pounds for quality, durable models.
However, the size, shape, and material components do warrant variations in weight-carrying efficiency. For desks, practicality directly corresponds to their robustness and construction quality.
With proper installation, floating desks prove to be sturdy workstations. They can comfortably bear loads anywhere between 100 and 200 pounds.
However, the brackets used for mounting have their respective weight limits. It's essential to ensure these brackets are securely fixed into wall studs for optimal stability.
It's worth noting that electric height-adjustable desks can have their shortcomings. For instance, their motors could burn out, their electrical wires could break, or voltage issues could stall the desk altogether.
On top of this, the wiring system could, in the worst-case scenario, catalyse an electrical fire due to liquid spills on the desk. However, keep in mind that these instances are not the norm, and most high-quality standing desks are built to withstand the regular wear and tear of office life.
Hence, we always recommend buying only from reputable and trusted retailers, such as Desky. Desky offers a range of high-quality electric height-adjustable desks that are designed to be durable, stable, and safe.
Even though mechanics might frail, remember that electric adjustable desks, are generally fairly reliable. But if these situations occur, the best solution is to contact the product's support team for professional assistance.
Standing desks are designed to be energy-efficient. While they do consume electricity, it&#;s not a significant amount, especially when compared to other office equipment. Take our Desky Dual Rubberwood Sit Stand Desk for example. While on standby, the power consumption is a negligible 0.1 watts.
The motors in electric sit-stand desks are designed to be energy-efficient, often using between 100-200 watts when in operation. Many electric sit-stand desks have low power consumption in standby mode, often less than a few watts.
The overall impact on your electricity bill is generally negligible. For instance, even with frequent adjustments throughout the day, the cost is likely to be less than a few dollars per year.
If you're worried about what happens when there's a power outage, rest assured. The standing desk motor only operates during desk movement.
In case of a power loss, the only thing you forfeit is the desk's adjustability. This could be a minor inconvenience at most, stressing the fact that an adjusted desk has a plethora of benefits.
Both manual and electric standing desks offer similar health benefits. Electric desks are known for their smooth operation, while manual desks are advantageous due to their affordability.
Power outages do not affect manual desks because they use a hand crank mechanism for adjustment. While they require more physical effort to adjust positions, they are cheaper and need less maintenance. Explore more about these options in our Standing Desks & Adjustable Sit-Stand Desks collection.
In summary, the answer to What mechanism do standing desks use? is multi-faceted. Both manual and electric standing desks employ unique mechanisms offering various advantages.
While the comfort of using an electric desk may appeal to some, the economical and less complex structure of a manual desk could be more appealing to others. At the end of the day, selecting a desk that meets your needs and preferences is of paramount importance.
The company is the world’s best 72 inch electric standing desk supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
Previous: None
Next: How to Choose the Best Electric Standing Desk Lifting Motor?
If you are interested in sending in a Guest Blogger Submission,welcome to write for us!
All Comments ( 0 )