Every review on ChairsFX mentions lumbar support as a crucial chair feature. This article explains the physiological benefits that a gaming chair lumbar support provides. Then it looks at the different types of lumbar support systems used on popular gaming chairs.
Sitting in a typical office chair rotates the pelvis and reduces the lumbar curve. Over time, the body adapts to sitting this way. Muscles in the back and shoulders that hold the spine straight get underworked. As a result, they atrophy.
This leads to a downward spiral of debilitation. Sitting with a curved pelvis shortens the hip flexors. That curls the spine into a “c” shape, rounding the upper back and hunching the shoulders.
Over time, muscles adapt. Then, the user will only feel comfortable when sitting with an arched lumbar spine. That weakens stomach muscles, making it harder to sit up straight.
At that point, chronic back, neck, and shoulder pain sets in. With a curved spine and weak muscles, users have two options. First, they can endure the pain. Second, they can buy a chair that has sufficient lumbar support.
The biomechanics of healthy sitting
Sitting causes the pelvis to rotate. That reduces lumbar lordosis, which curves the upper back and shortens the hip flexors. Over time, the body adapts to this position, resulting in a perpetual slouch when sitting or standing.
This summary of healthy sitting studies found that lumbar support reduces disc pressure. Lumbar support with a backrest reclined to 100 degrees is the optimal configuration. The recline angle allows the user to set their computer monitor to eye level. That prevents the neck from bending while using a computer.
Below, we explain the health benefits that good lumbar support adds to the sitting experience.
Flattened lumbar area shortens hip flexors
The lumbar area consists of five vertebrae in the lower spine between the buttocks and ribs. A healthy lumbar area naturally curves inward towards the belly. Sitting with a slouch flattens the lumbar curve. Over time, that shortens hip flexors.
As a result, the opposing gluteal muscle (buttock) gets longer and weaker. Gluteal muscles are the primary muscle that balances the hips above the legs. When the primary muscle becomes weak, helper muscles must take over. This causes further problems.
For instance, some studies estimate that 85% of men and 75% of women suffer from anterior pelvic tilt. Short hip flexors force the front of the pelvis to rotate forward. At the same time, short flexors push the back of the pelvis upwards.
The result is a distorted body with weak stomach muscles, lower body tightness, and a sagging upper body. In this alignment, running, kicking, and bending at the hip becomes difficult.
Gaming chair lumbars support a healthy curve
Spinal curvatures and pelvic orientation differ when standing and sitting. When sitting, there is a postural pelvic tilt with a diminished sacral slope (S.S.). When slouching, the sacral slope decreases even more. At the same time, the lumbar curve gets almost completely flattened. The result is increased pressure on the five lumbar discs.
In 2009, a team of researchers sought out the optimal seated lumbar position. In Seeking the Optimal Posture of the Seated Lumbar Spine, several facts were made clear:
- When standing, the optimal lordotic angle is between 20-45 degrees.
- Unsupported sitting reduces lumbar lordosis by 50%. It also increases intradiscal pressure at the third lumbar vertebra by 40%.
- When sitting with a back angle of 110° and a lumbar support 4 cm deep, lumbar lordosis averages a healthy 47° angle.
- The depth of the lumbar support depends on the individual. If a lumbar support causes discomfort, it means it is set too high, too low, or too deep.
- A sustained lordotic sitting position decreases disc pressure and thereby disc degeneration.
The chair has two essential roles in this configuration. Those are to maintain lumbar lordosis and allow alternating postures.
Using simple, logical technology, gaming chairs fill both of those roles. You can adjust the height of the lumbar or neck pillows to fit into your spine’s natural curves. You can also engage the reclining function to move your body as you sit.
Healthy lumbar curve supports a straight spine
With a flattened lumbar, the upper body tends to sag forward. In contrast, a healthy curvature in the lumbar prevents that. In a gaming chair, adjust the lumbar pillow to fit your lower back curve. Then lean your body weight into the backrest. The mild lumbar pressure combined with a tall backrest makes it impossible to slouch.
The lumbar pillow maintains your lower back curve, while the backrest supports the entire spine. The result is an upright sitting posture ideal for long periods of healthy computing. That is called a Neutral Sitting Posture. That means:
- Feet planted on the floor.
- Knees bent at around 90° with thighs parallel to the floor.
- Back straight.
- Elbows bent at 90° with forearms parallel to the floor.
This is similar to the concept of a weightlifter’s belt. Research shows that when lifting, wearing a lifting belt reduces upper back flexion. At the same time, it increases flexion in the hips and knees. That forces the user to lift with their legs, instead of with their back.
Wearing a belt also causes the lifter to be more aware of their back position. The physical sensation of a belt against skin keeps them alert and in tune with their body. A gaming chair lumbar support works the same way. As the user feels it against their lower back, it makes them more aware of their sitting position. That makes it easier to maintain a neutral sitting posture.
Feet flat on the floor with a mild lumbar curve is the ideal. To learn more about optimal positioning, check out this feature:
Types of gaming chair lumbar support
The previous section clarified the importance of seated lumbar support. This section look at the two types of gaming chair lumbar supports. After that, we look at lumbar supports used by other ergonomic chairs.
Traditional lumbar pillow
The most common type of gaming chair lumbar support is a traditional pillow. These usually attach onto straps that hold it against the backrest. Slide the pillow up or down until it fits into the small of your back.
The straps keep the pillow in place at your preferred height. To support upright computing, set the backrest recline to between 100-110 degrees. Then lean into the backrest. The lumbar pillow will encourage mild lordosis, while the neck pillow will keep the head in balance atop the shoulders. Lumbar pillows are technically only height-adjustable. However, by ensuring the right size of gaming chair, you won’t need to adjust the lumbar depth.
To sit in a gaming chair, position your hips as far back into the seat as possible. If the chair fits correctly, there should be a few inches of space between the back of your knees and the seat’s edge.
In a well-fitting chair, the lumbar pillow will extend more than you need it to. When you press your back against the backrest, the lumbar pillow will compress. After a few days of use, the pillow will compress to the optimal depth for your spine.
To ensure the right fit, check out our Gaming Chair Sizing Guide. To ensure perfect usage, check out our comprehensive Gaming Chair User Guide.
Depth-adjustable internal lumbar
A traditional gaming chair pillow compresses to fill the lumbar curve of the user. To ensure the best fit, you can adjust the height up or down. An internal lumbar support system employs a different concept. It lets the user decide lumbar depth, instead of pillow compression.
The most popular chair with an internal lumbar support system is the Secretlab Titan. This is a top-of-the-line pro esports chair that costs between $459 and $519. Features include 4D armrests, a multifunction tilt-lock, a 5-year warranty, and an internal lumbar support.
The Secretlab Titan lumbar support is depth-adjustable. Other chairs that use internal lumbar systems include the Noblechairs Hero, Autofull T1 Hero, Maxnomic Office Comfort, and Maxnomic Executive Editions. All work using the same principles. Here is how the internals work on the Autofull T1 Hero:
As you turn the dial on the side of the chair, a flexible steel plate bends outwards, increasing the depth of support. Over the plate sits a thick layer of resilient foam padding and cover material. The result is that the lumbar curve expands or retracts from within the backrest itself. It’s a clever solution that works well.
The end result delivers the same outcome as a traditional pillow, with more elegance. The internal lumbar provides slightly firmer support that feels like part of the chair. It’s more precise and consistent. Once you set in your desired position, you can set, forget, and enjoy a fit tailored to your spine.
Razer Iskur lumbar
Recently, Razer introduced its first gaming chair. The Razer Iskur chair provides an alternative take on depth-adjustable lumbar support. Razer touts its version as the most advanced on the market.
The lumbar plate is a piece of reinforced plywood topped with foam and leather. A single control on the side of the seat lets you raise or lower the plate to your liking.
The design looks intriguing. However, the concept of jabbing plywood into your lumbar curve sounds awkward and painful.
Other ergonomic lumbar support systems
Gaming chairs either come with a lumbar pillow or an internal lumbar device. Other types of ergonomic chairs support a lumbar curve using different techniques.
Herman Miller Posturefit
Herman Miller is the ergonomic chair pioneer and leading industry brand. The company’s flagship product is the iconic Herman Miller Aeron. In a 2017 update, that product introduced a support system called PostureFit. This device supports both the lumbar and sacral-pelvic areas. The former maintains a healthy lumbar curve. The latter gives your pelvis a forward tilt to prevent slouching.
You can adjust the height of the support and also the depth. Each pad flexes independently. Working together, the pads encourage the spine to maintain a healthy S-shaped position.
This system works so well that it’s basically impossible to slouch. It’s also comfortable, providing gentle support that makes you feel like you’re floating.
Because of its effectiveness, other Herman Miller chairs also use a Posturefit. For instance, if you can’t afford a $1395 Aeron chair, the Sayle offers Posturefit (and lots more) for $755.
Check out the ergonomics of Herman Miller’s top three chairs for more info:
Height and depth-adjustable external lumbar
Buying a chair with effective lumbar support doesn’t have to be expensive. Several models offer height and depth-adjustable lumbar support across various price ranges.
Cheap ergonomic chairs under $250
There are several ergonomic office chairs on the market that cost under $250. Most models in this range meet basic ergonomic guidelines. Those demand adjustable lumbar support, adjustable armrests, and a reclining backrest.
For example, the Sihoo Ergonomic Chair costs $199.99 on Amazon. It meets ergonomic guidelines with 1D armrests, a reclining backrest, and adjustable lumbar. You can manually adjust the support up and down while adjusting the depth using a dial on the back of the chair.
Cougar Argo
In June 2020, Cougar released the Argo chair ($499 from Cougar). That model combined gaming and task chair features into a unique hybrid.
The standout feature is the height and depth-adjustable lumbar support. You can slide the support up and down. You can also rotate the angle to increase or decrease depth.
Cheap chair lumbar addons
If it’s not feasible to buy a new chair, there are ways to make healthy use out of an existing one. The cheapest option is to roll up a towel and stuff it between your lumbar curve and the chair’s backrest. By supporting the lumbar curve, you’ll find it easier to sit up straight in a cheap chair.
Another option is to buy a lumbar support addon. For example, the McKenzie Lumbar Roll costs $21.95 on Amazon.
It’s a foam roll stuffed inside a machine-washable cover. Loop the straps over the backrest of a chair or car seat and tighten. Then adjust the height to fit into your lumbar curve. Sit as far back in the seat as possible, until the pillow fills your lumbar curve. That will keep your upper back straight, with your entire spine in a healthy alignment.
Conclusion
When standing, the normal lumbar lordotic angle (LLA) in men and women is between 20-45 degrees. Unsupported sitting reduces lumbar lordosis by 50%. At the same time, it increases intradiscal pressure at the third lumbar vertebra by 40%.
By combining a mild recline with lumbar support, users can achieve a healthy lumbar curve. Research suggests the ideal as a 110° backrest recline plus lumbar support 4 cm deep. That results in an optimal seated lumbar curve of 47°. That is slightly more than the optimal standing lumbar curve. Since humans aren’t designed for long periods of sitting, the extra lumbar support helps to compensate.
The bottom line is that lumbar support is essential for anyone who spends long periods sitting. A healthy curve in the lower back keeps the spine straight and in a healthy alignment. Whichever type of chair you use, use the same methods. First, adjust the lumbar support to fit into your lower back curve. Then sit as far back as possible in the chair so that the lumbar support fills your lower back curve. That puts you in the perfect position to deploy a neutral sitting position:
- Feet planted on the floor.
- Knees bent at around 90° with thighs parallel to the floor.
- Back straight.
- Elbows bent at 90° with forearms parallel to the floor.
To ensure the best ergonomic support, make sure to choose a chair appropriate for your size. Check out our Gaming Chair Sizing Guide for details. After buying, make sure to use your chair correctly. The human body adapts to the positions it spends most time in. If you sit full-time for a living, it’s a great opportunity to achieve perfect posture while you sit. Check out our User Guide to learn more. Get yourself started on an incredible journey of health, wellness, and productivity:
