If you want to sit on a ball for extended periods, the ball chair may offer the best option. The ball sits in a wheeled frame that offers stability, adjustability and maneuverability. Some of the ball chairs have arms and a back to improve comfort. Here, we discuss the science behind the connection between how we sit and our health, the potential benefits of sitting on a stability ball, and several exercises for improving your back health and posture. Inventive manufacturers offer ball chairs to combine the perceived benefits of a ball with the stability, mobility and comfort of a chair. It may be replacing your office chair for a stability ball. This can create problems if you have a small space and may cause the ball or chair to impede your ability to move freely within the space. Sitting on a ball at the office or home may require you to reserve space for both a chair and a ball to keep you comfortable and productive. If punctured, the ball can deflate, although most exercise balls are constructed of burst-resistant plastic so they deflate slowly to prevent injury. Placing the ball on a stability base or ring can keep the ball in place, but may make it harder to position the ball because the ball and the base must shift together. The ball can roll out from under you if you aren’t careful. Alternating sitting in a chair with sitting on the ball could reduce the discomfort during the day. A third study published in “Human Factors” also concluded that the balls caused discomfort with little or no redeeming advantage. A May 2006 study reported in “Clinical Biomechanics” reported that extended ball sitting led to soft tissue compression and subsequent discomfort. A study published in the May 2009 edition of “Applied Ergonomics” noted that women who typed sitting on a ball for more than one hour demonstrated spinal shrinkage and a reduction in arm flexion, leading the authors to conclude that the ball disadvantages outweigh any benefits. The balls are not ergonomically developed for extended sitting, which leads to discomfort. Sitting on the ball for hours can become painful. A study published in the December 2009 edition of “Scoliosis” found that individuals sitting on an exercise ball demonstrated similar slumping and poor posture habits to those sitting in chairs. Fatigue can lead to poor posture, the antithesis of why many sit on the ball. He believes that long hours of ball sitting can lead to injuries when you get too tired to maintain your balance or focus on your balance and posture. Henry Goitz, chief of sports medicine at the Medical College of Ohio. The lack of stability, arm and back support can cause fatigue if you sit on the ball for extended periods, according to Dr.
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