Group items tagged

How To Relieve Constipation Fast? About twelve percent of the population worldwide report constipation each year. It is characterized by undue effort and time to expel the stool. Here we discuss some useful home remedies to treat constipation. Sometimes it can be really stubborn and won't go away.

An average human being visits the toilet six times a day and stays there for about two minutes. However, attending the call of nature is not always this easy. Sometimes, a common gastrointestinal condition called constipation occurs. It becomes difficult to expel the feces. A desire to visit the washroom is not enough to physically eliminate the feces.

Ergonomic Wheelchair is a light-weight Wheelchair. Its ergonomically designed manual wheelchair built for comfort, health and durability. It uses the patented S-Ergo seat design that helps in distributing weight evenly and reduces the potential for bed sores.Ergonomic wheelchair provides users with a large selection of ultra lightweight wheelchairs that can help improve your life. This series has features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. Ergonomic Wheelchair features an ergonomic "S" shaped seat and the karma ergolite 2501,karma S-106,karma S-105 all features are S-shaped provides the perfect shape to fit the human body to relieve pressure, increase stabilization, weight distribution and lower the risk of pressure sores andscoliosis.Ergonomic Wheelchair users commonly experience pain in their hands and wrists associated with the repetitive stress of wheelchair propulsion. The objectiveof this research was to examine the effect of an ergonomic wheelchair handrim as an intervention designed to reduce pain in the hands and wrists. Ergonomics is the relationship of the body to work. It has long been a priority in industrial settings like assembly plants where work injury from physical overuse is a great danger. Now that computers are causing a lot of physical discomfort, the term is more widely heard.Ergonomic Wheelchairs (Intelligent s-shaped ergonomic seating) provides efficient pressure relief by spreading weight over a greater area, at the same time provides stabilization and reduced sliding. karma ergolite 2501 is the main fetures of the ergonomic wheelchair.It is designed ergonomically, and the backrest angle, backrest height, handlebar height and foot height are adjustable to individual requirements of the user. The optional handrail is designed for quick release and ease of use.Karma ErgoLite is a Lightweight ergonomic wheelchai

Ergonomic Wheelchair is a light-weight Wheelchair. Its ergonomically designed manual wheelchair built for comfort, health and durability. It uses the patented S-Ergo seat design that helps in distributing weight evenly and reduces the potential for bed sores.Ergonomic wheelchair provides users with a large selection of ultra lightweight wheelchairs that can help improve your life. This series has features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. Ergonomic Wheelchair features an ergonomic "S" shaped seat and the karma ergolite 2501,karma S-106,karma S-105 all features are S-shaped provides the perfect shape to fit the human body to relieve pressure, increase stabilization, weight distribution and lower the risk of pressure sores andscoliosis.Ergonomic Wheelchair users commonly experience pain in their hands and wrists associated with the repetitive stress of wheelchair propulsion. The objectiveof this research was to examine the effect of an ergonomic wheelchair handrim as an intervention designed to reduce pain in the hands and wrists. Ergonomics is the relationship of the body to work. It has long been a priority in industrial settings like assembly plants where work injury from physical overuse is a great danger. Now that computers are causing a lot of physical discomfort, the term is more widely heard.Ergonomic Wheelchairs (Intelligent s-shaped ergonomic seating) provides efficient pressure relief by spreading weight over a greater area, at the same time provides stabilization and reduced sliding. karma ergolite 2501 is the main fetures of the ergonomic wheelchair.It is designed ergonomically, and the backrest angle, backrest height, handlebar height and foot height are adjustable to individual requirements of the user. The optional handrail is designed for quick release and ease of use.Karma ErgoLite is a Lightweight ergonomic wheelchair

Ergonomic Wheelchair is a light-weight Wheelchair. Its ergonomically designed manual wheelchair built for comfort, health and durability. It uses the patented S-Ergo seat design that helps in distributing weight evenly and reduces the potential for bed sores.Ergonomic wheelchair provides users with a large selection of ultra lightweight wheelchairs that can help improve your life. This series has features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. Ergonomic Wheelchair features an ergonomic "S" shaped seat and the karma ergolite 2501,karma S-106,karma S-105 all features are S-shaped provides the perfect shape to fit the human body to relieve pressure, increase stabilization, weight distribution and lower the risk of pressure sores andscoliosis.Ergonomic Wheelchair users commonly experience pain in their hands and wrists associated with the repetitive stress of wheelchair propulsion. The objectiveof this research was to examine the effect of an ergonomic wheelchair handrim as an intervention designed to reduce pain in the hands and wrists. Ergonomics is the relationship of the body to work. It has long been a priority in industrial settings like assembly plants where work injury from physical overuse is a great danger. Now that computers are causing a lot of physical discomfort, the term is more widely heard.Ergonomic Wheelchairs (Intelligent s-shaped ergonomic seating) provides efficient pressure relief by spreading weight over a greater area, at the same time provides stabilization and reduced sliding. karma ergolite 2501 is the main fetures of the ergonomic wheelchair.It is designed ergonomically, and the backrest angle, backrest height, handlebar height and foot height are adjustable to individual requirements of the user. The optional handrail is designed for quick release and ease of use.Karma ErgoLite is a Lightweight ergonomic wheelchair

Ergonomic Wheelchair - s90 Ergonomic wheelchair series provides users with a large selection of ultra lightweight wheelchairs that can help improve your life. This series has features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. Also includes the exclusive S-Shape Seating System, which provides increased stability, better weight distribution and lowers the risk of pressure sores and spinal injury. The patented S-Shape Seating System that comes with every wheelchair model in this series provides an ergonomic seating frame that conforms and flexes to the shape of your body. Ergonomic Wheelchair - s90 features an ergonomic "S" shaped seat that provides the perfect shape to fit the human body to relieve pressure, increase stabilization, weight distribution and lower the risk of pressure sores and scoliosis. Features Ultra-Lightweight Frame & Riggings Ergonomic S-Shape Seat Frame Ergonomic grip built into the wheels you propel yourself in Relieves pressure throughout your body T6 Aircraft Grade Aluminum Fusion of form and function at its best with modern stylish designs and options Tube In Center designed footrests protects legs from impacts Extra wide and ergonomic concave arm pads and foldable backrest Flip back armrests allows for easier transfers Removable footrests KM 7501 Wheelchair KM 7501 Wheelchair is a manual wheelchair for children. Its ergonomically antelope horn-shaped handle makes it easy to steer and push the chair, and vertical footrest allow legs to be placed in the correct position. One-piece footplate increases stability. Ergonomically antelope horn -shaped handle Outward extended front wheels Caring footrest One-pieced footplate Vertical footrest Ultra lightweight and compact Seat widths : 11"and 13.5" Weight: 9.3kg Ultra lightweight and compact.

Ergonomics is the relationship of the body to work. It has long been a priority in industrial settings like assembly plants where work injury from physical overuse is a great danger. Now that computers are causing a lot of physical discomfort, the term is more widely heard.Ergonomic Wheelchairs (Intelligent s-shaped ergonomic seating) provides efficient pressure relief by spreading weight over a greater area, at the same time provides stabilization and reduced sliding. Removable upholstery is equipped with AEGIS Microbe Shield anti-biotic technology, odor and stain resistan, ergonomic & lightweight with compact, wider arm pad that provide comfort support. It has a folding backrest.

Ergonomic Wheelchair features an ergonomic "S" shaped seat that provides the perfect shape to fit the human body to relieve pressure, increase stabilization, weight distribution and lower the risk of pressure sores and scoliosis.

Features-

Ultra-Lightweight Frame & Riggings
Ergonomic S-Shape Seat Frame
Ergonomic grip built into the wheels you propel yourself in
Relieves pressure throughout your body
T6 Aircraft Grade Aluminum
Fusion of form and function at its best with modern stylish designs and options
Tube In Center designed footrests protects legs from impacts
Extra wide and ergonomic concave arm pads and foldable backrest
Flip back armrests allows for easier transfers
Removable footrests

S-Ergo 105 Wheelchair

S-Ergo 105 is equipped with the unique ergonomic S-shaped seating system.Ergonomic S-shaped seating system, which has been developed by Karma's very own research and development wheelchair team, is proven to be the best in pressure relief and prevent sliding.S-Ergo 105 Wheelchair
provides pressure relief, stabilization and reduced slidingExtended armrest design allows better seating space with a narrower total chair widthWider armpad

Ergonomics: Benefits of Active Sitting for the Able-bodied The field of ergonomics, in particular that of office furniture, now offers various active sitting products that enable different kinds of movement: forward and backward, lateral (side to side), 360 degree wobble, etc. It is important to note that the ergonomic research also indicates that - although movement is necessary - it is not enough. All movements are not the same; there are movements to be avoided. For example, movement that alternates between different awkward sitting postures that repeatedly load the same joints will provide little benefit.Buy online Ergonomic Wheelchair for handicapped and disabled at lowest price and cheap cost in india from wheelchair india online shopping store of Ergonomic Wheelchair manufacturer, distributor, dealer and supplier of variety of karma Ergonomic Wheelchair at low price in india The benefits of active sitting are understood to occur with movements through a graded range of centered and symmetrical postures. The active and controlled postural positions in sitting are believed to activate and strengthen muscles in the back and core area,to relieve the static loads acting on joints, ligaments, and tendons, and to promote circulation for elimination of waste products. Thus, a dynamic, ergonomic sitting position is believed to lead to improved posture, core stability, and circulation. Wheelchair at low price in india for handicapped and disability product like Karma S Ergo 305 Wheelchair, Karma S Ergo 125 Wheelchair, Karma S-Ergo 115 Wheelchair, Karma Ergo Lite 2501 Wheelchair, Karma S Ergo 106 Wheelchair, Karma S Ergo 105 Wheelchair, along with that we offer huge discount and promo code when you purchase ERGONOMIC WHEELCHAIR from our online shopping store of Ergonomic Wheelchair. Although extensive research in the field of ergonomics and active sitting is yet to become widely available, the logical benefits are easily extrapolated. The pelvis is tilte

Ergonomic wheelchair series provides users with a large selection of ultra lightweight wheelchairs that can help improve your life. This series has features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. Also includes the exclusive S-Shape Seating System, which provides increased stability, better weight distribution and lowers the risk of pressure sores and spinal injury. The patented S-Shape Seating System that comes with every wheelchair model in this series provides an ergonomic seating frame that conforms and flexes to the shape of your body.

Feature

Ultra-Lightweight Frame & Riggings
Ergonomic S-Shape Seat Frame
Ergonomic grip built into the wheels you propel yourself in
Relieves pressure throughout your body
T6 Aircraft Grade Aluminum
Fusion of form and function at its best with modern stylish designs and options
Tube In Center designed footrests protects legs from impacts
Extra wide and ergonomic concave arm pads and foldable backrest

S Ergo 115 Wheelchair

Wheelchairs provide variable mobility to people with various physical disabilities. There are four major types of wheelchairs: indoor, outdoor, combined and special. Ergonomics, or design of equipment to prevent injury, considers all physical and anatomical limitations of the users.A complete assessment may prevent future injury, and improve mobility.

SEAT WIDTH
The width of the wheelchair seat is based on the users' widest point, usually the hips or thighs. If shoulders are wide, consider the shoulder width when choosing a seat width. A too-wide seat leads to difficulty in mobility, inadequate support and discomfort. A narrow seat contributes to pressure sores, inadequate support and discomfort. It is important to have an exact measurement of the seat width for opti

wheelchair cushion can make all the difference in comfort, health and proper positioning. Specifically designed to redistribute pressure caused by constant sitting, wheelchair Hard cushions are available in a wide variety of shapes, sizes and construction to accommodate every unique user's special requirements. They reduce the risk of issue breakdown caused by constant pressure, helping to prevent or relieve pressure ulcers and bedsores, while they also absorb shocks and provide stability, comfort and posture control. It has the finest quality of the upholstery which is very comforting for old aged and people with knee and other ailments.

Foam Wheelchair Cushions - Foam is light and varies widely in stiffness and density. Proper stiffness, density and resilience help ensure adequate support and an effective lifespan.

Gel Wheelchair Cushions -Gel wheelchair cushions are heavier than foams and, therefore, are often used in combination with foams. These materials are good at minimizing heat and are typically encased by a protective cover so are easily cleaned. Because of their incompressible nature, viscous fluid and gel wheelchair cushions often use a contoured non-deforming foam base or a flat, compressible foam base to better enable the cushion to conform around the body. Gels and fluids absorb vibration but cannot absorb impact well. Therefore, these materials can absorb the vibrations that one might experience in a car, but not the impact one gets when bumping over a curbcut.

Air Wheelchair Cushions - Air is highly compressible and would make an excellent support surface, except for its requirement of an impermeable membrane.Because air wheelchair cushions are adjustable, they can be inflated to meet the needs of the user, but this adjustability also means that they must be maintained properly. An improperly inflated air cushion can be either too hard or too soft, and both are potentially damaging situations.

Ergonomic Wheelchair is a lightweight aluminum wheelchair designed for the ultimate mobility experience at a competitive price. Ergonomic Wheelchair is easy to pick up, fold up, and transport in any vehicle. It is a folding backrest and seat with optional quick release wheels and make folding breakdown quick and simple. Ergonomic Wheelchair uses a lightweight Aircraft-grade Aluminum frame making it the lightest folding chair. Ergonomic Wheelchair is a light-weight Manual Wheelchair. It is ergonomically designed manual wheelchair built for comfort, health and durability. It uses S-Ergo seat design that helps in distributing weight and reduces the potential for bed sores. Ergonomic wheelchair provides users with a large selection of ultra lightweight wheelchairs that can help improve your life. Ergonomic wheelchair features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. It is also includes the exclusive S-Shape Seating System, which provides increased stability, better weight distribution and lowers the risk of pressure sores and spinal injury. Ergonomic Wheelchair provides efficient pressure relief by spreading weight over a greater area at the same time provides stabilization and reduced sliding. Removable upholstery is equipped with AEGIS Microbe Shield anti-biotic technology, odor and stain resistan, ergonomic and lightweight with compact, wider arm pad that provide comfort support. Ergonomic wheelchair has a folding backrest. Ergonomic "S" Seating: Ergonomic Wheelchair has ergonomic seating system which is very popular in USA and has setup a benchmark for handicap person using Ergolite KM-2501. Ergonomic seat has a slight 'S" shape to it, just like the natural body's shape. Ergonomic "S" shape provides a more natural posture and discourages the sensation of sliding forward out of the seat. Ergonomic arms: Fixed height desk-length arms in

Ergonomic Wheelchair is a lightweight aluminum wheelchair designed for the ultimate mobility experience at a competitive price. Ergonomic Wheelchair is easy to pick up, fold up, and transport in any vehicle. It is a folding backrest and seat with optional quick release wheels and make folding breakdown quick and simple. Ergonomic Wheelchair uses a lightweight Aircraft-grade Aluminum frame making it the lightest folding chair. Ergonomic Wheelchair is a light-weight Manual Wheelchair. It is ergonomically designed manual wheelchair built for comfort, health and durability. It uses S-Ergo seat design that helps in distributing weight and reduces the potential for bed sores. Ergonomic wheelchair provides users with a large selection of ultra lightweight wheelchairs that can help improve your life. Ergonomic wheelchair features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. It is also includes the exclusive S-Shape Seating System, which provides increased stability, better weight distribution and lowers the risk of pressure sores and spinal injury. Ergonomic Wheelchair provides efficient pressure relief by spreading weight over a greater area at the same time provides stabilization and reduced sliding. Removable upholstery is equipped with AEGIS Microbe Shield anti-biotic technology, odor and stain resistan, ergonomic and lightweight with compact, wider arm pad that provide comfort support. Ergonomic wheelchair has a folding backrest. Ergonomic "S" Seating: Ergonomic Wheelchair has ergonomic seating system which is very popular in USA and has setup a benchmark for handicap person using Ergolite KM-2501. Ergonomic seat has a slight 'S" shape to it, just like the natural body's shape. Ergonomic "S" shape provides a more natural posture and discourages the sensation of sliding forward out of the seat. Ergonomic arms: Fixed height desk-length arms incl

Ergonomic Wheelchair is a lightweight aluminum wheelchair designed for the ultimate mobility experience at a competitive price. Ergonomic Wheelchair is easy to pick up, fold up, and transport in any vehicle. It is a folding backrest and seat with optional quick release wheels and make folding breakdown quick and simple. Ergonomic Wheelchair uses a lightweight Aircraft-grade Aluminum frame making it the lightest folding chair. Ergonomic Wheelchair is a light-weight Manual Wheelchair. It is ergonomically designed manual wheelchair built for comfort, health and durability. It uses S-Ergo seat design that helps in distributing weight and reduces the potential for bed sores. Ergonomic wheelchair provides users with a large selection of ultra lightweight wheelchairs that can help improve your life. Ergonomic wheelchair features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. It is also includes the exclusive S-Shape Seating System, which provides increased stability, better weight distribution and lowers the risk of pressure sores and spinal injury. Ergonomic Wheelchair provides efficient pressure relief by spreading weight over a greater area at the same time provides stabilization and reduced sliding. Removable upholstery is equipped with AEGIS Microbe Shield anti-biotic technology, odor and stain resistan, ergonomic and lightweight with compact, wider arm pad that provide comfort support. Ergonomic wheelchair has a folding backrest. Ergonomic "S" Seating: Ergonomic Wheelchair has ergonomic seating system which is very popular in USA and has setup a benchmark for handicap person using Ergolite KM-2501. Ergonomic seat has a slight 'S" shape to it, just like the natural body's shape. Ergonomic "S" shape provides a more natural posture and discourages the sensation of sliding forward out of the seat. Ergonomic arms: Fixed height desk-length arms in

Karman Ergonomic Wheelchair Ergonomic wheelchair series provides users with a large selection of ultra lightweight wheelchairs that can help improve your life.Ergonomic wheelchair features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. Also includes the exclusive S-Shape Seating System, which provides increased stability, better weight distribution and lowers the risk of pressure sores and spinal injury. Karman Ergonomic wheelchair features an ergonomic "S" shaped seat that provides the perfect shape to fit the human body to relieve pressure, increase stabilization, weight distribution and lower the risk of pressure sores and scoliosis. It has swing-away footrests standard with elevating legrests as an optional upgrade and "tube-in center" footplate that assures better side leg support. The backrest easily folds for transportation and storage and it also features a pouch for carrying small items. Features- Ultra lightweight ergonomic wheelchair Anti-bacterial upholstery High strength and folding backrest Fixed armrest, swing-away footrest "Tube-in Center" foot-plate, assures better side leg support Karma KM 7501 Karma KM-7501 Pediatric Wheelchair is a manual wheelchair for children. It's ergonomically antelope horn-shaped handle makes it easy to steer and push the chair, and vertical footrest allow legs to be placed in the correct position. It'sprovides safety and comfort for your child and ease of use for you with it's ergonomically shaped push handles. One-piece footplate increases stability. Features : Ergonomically antelope horn -shaped handle Outward extended front wheels Caring footrest One-pieced footplate Vertical footrest Ultra lightweight and compact Vertical footrest Fixed full soft rubber armrests for added comfort and durability

The S-Ergo 305 is equipped with Karma's S-Ergo seating system, which promotes pressure redistribution and helps to prevent the occupant sliding down the seat. Ergonomic wheelchairs have been tested and proven to be effective for relieving pressure throughout the body; this is confirmed by pressure chart mapping. Feeling comfortable on a wheelchair is something every user demands out of their new wheelchair, the ergonomic cushion that is included with the ergonomic series provides a level of comfort that is unparalleled.

Ergo 305 is a Folding Wheelchair .It has features and adjustments and comes with our patented S-Ergo seating system, allowing the user to sit comfortably while in the chair and preventing users from sliding off the seat.Ergo 305 is also detachable and has been treated with Aegis microbe shield for maximum hygiene.Ergo 305 wheelchair comes with a wide range of adjustable features including mud guards to protect clothing and shoes in bad weather, footrest hangers, slowing brakes and adjustable armrests Features Only 10 kg. (w/ wheels & footrests removed) Folding backrest, for transporting chair in car, bus, trips, ect. Swing in & away footrest for maximum safety while entering or exiting the chair 24" Quick Release rear spoke/polyurethane/high profile/flat free wheels & 7×1" front casters Seat Width: 18"x17" OR 16" x 17" Upholstery: Silver/Black mesh AEIGIS back and seat cushion Height Adjustable Armrest Factory Height Settings should be selected at time of purchase for convenience High strength, weighs only 13 kg. (w/o footrests) Anti-Bacterial Upholstery/Cushion Flip back armrests w/ wider contoured arm pads for maximum comfort "Tube-in Center" foot-plate, assures better side leg support Frame Color: Pearl Silver & Rose Red Axle Adjustable Seat Height ( 18", 19", 20") Weight Capacity: 115 kg.

Ergonomic wheelchair series provides users with a large selection of ultra lightweight wheelchairs that can help improve your life. This series has features that include a high strength lightweight frame, foldable and easy to store, breathable anti-bacterial, anti-staining, removable and machine washable cushion. Also includes the exclusive S-Shape Seating System, which provides increased stability, better weight distribution and lowers the risk of pressure sores and spinal injury. The patented S-Shape Seating System that comes with every wheelchair model in this series provides an ergonomic seating frame that conforms and flexes to the shape of your body. Feature Ultra-Lightweight Frame & Riggings Ergonomic S-Shape Seat Frame Ergonomic grip built into the wheels you propel yourself in Relieves pressure throughout your body T6 Aircraft Grade Aluminum Fusion of form and function at its best with modern stylish designs and options Tube In Center designed footrests protects legs from impacts Extra wide and ergonomic concave arm pads and foldable backrest S Ergo 115 Wheelchair Wheelchairs provide variable mobility to people with various physical disabilities. There are four major types of wheelchairs: indoor, outdoor, combined and special. Ergonomics, or design of equipment to prevent injury, considers all physical and anatomical limitations of the users.A complete assessment may prevent future injury, and improve mobility. Seat Width The width of the wheelchair seat is based on the users' widest point, usually the hips or thighs. If shoulders are wide, consider the shoulder width when choosing a seat width. A too-wide seat leads to difficulty in mobility, inadequate support and discomfort. A narrow seat contributes to pressure sores, inadequate support and discomfort. It is important to have an exact measurement of the seat width for optimal mobility and environmental accessibility. Seat Depth The seat depth is measured from the back of th

For most people, the onset of winter season is marked by the catch of cold or flu. While few people prefer to jump onto medication to relieve the symptoms, some leave it to Nature to be cured. In reality, there is no certain cure for cold and it takes its time before the symptoms disappear. So, prevention is the smarter way out. Here are 8 changes in habits that can prevent cold:

Karma ErgoLite Lightweight Transporter Chair is a portable mobility solution that is lightweight and foldable so you can bring it everywhere.S-2501 ErgoLite is highly manueverable, providing convenient transport whether you are in class, visiting the doctor or just enjoying time with friends at the mall. Karma Ergolite 2501 is designed for comfort and convenience,Ergolite has fixed armrests with padded troughs, fixed footrests with wider footplates and three pouches for storing personal items while you are out. If you want a mobility aid that combines a durable, low-profile frame with satisfying ergonomics, buy the Karman Healthcare ErgoLite Lightweight Transporter Chair from ActiveForever.The pressure-minimizing ergonomic seat means you can ride for an extended time and remain comfortable and safe from skin ulceration. The built-in seat cushion is treated with Aeigs Microbe Shield technology, rendering it permanently anti-bacterially active for added skin protection. This long-lasting transporter chair has aircraft-grade aluminum for a frame and rugged, 14" tires that never go flat. Karman Healthcare offers an unbeatable lifetime warranty on its S-ERGO line of chairs so you know you're getting a high-quality product. Karma Ergolite 2501 Lightweight Transporter Chair Features: 18 pound transport chair is lightest available S-style ergonomic seat minimizes pressure Aircraft-grade aluminum frame Flat-free tires Backrest folds fo