They place duties on employers, and those who control any work at height activity (such as facilities managers or building owners who may contract others to work at height). The head rests on high-back chairs support your upper back by allowing you to relax your neck and trap muscles whenever you need to. It appears that a high back chair is the best choice, but some things must be taken into consideration. This is also part of why most mid-back chairs are not as adjustable as most high-back chairs. Interestingly, it appears that low-back chairs are most cost-efficient, high-back chairs are usually the most expensive, and mid-back chairs exist somewhere in between. Also commonly referred to as ‘task chairs,’ low-back chairs typically feature back rests which come as high as the middle of your back. Can you spell these 10 commonly misspelled words? Back height has an impact on back to back spacing and the higher the back, the more space that is required. Disproportionate dwarfism. In other cases CT or MRI scans are performed when tumor is suspected to be the cause of the fracture. Let’s take a brief look at each of the three types of chairs so that I may fully explain this concept. For the most part, I was wrong. High-back chairs normally include some sort of a head rest. Let’s take a brief look at each of the three types of chairs so that I may fully explain this concept. It turns out that the terms low-back, mid-back and high-back do not refer to the height of the back rests. First, what do you do when you sit in your office chair? These chairs support your middle back, because they come higher than your shoulder blades. Backsight definition is - a reading of the leveling rod in its unchanged position when the leveling instrument has been taken to a new position. Test Your Knowledge - and learn some interesting things along the way. Learn a new word every day. When I first heard these terms I began picturing chairs in my head. It turns out that the terms low-back, mid-back and high-back do not refer to the height of the back rests. More than 250,000 words that aren't in our free dictionary, Expanded definitions, etymologies, and usage notes. Yes, low-back chairs typically have shorter back rests than mid-back or high-back chairs. The back rest on these chairs is usually quite small and will flex backward and forward while you are sitting. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! The average adult height among people with dwarfism is 4 feet (122 cm).Many different medical conditions cause dwarfism. Complications often come within that lifestyle if the chair you sit is unsupportive.More than one in five people will experience severe back pain in their lives. 'All Intensive Purposes' or 'All Intents and Purposes'? In general, the disorders are divided into two broad categories: 1. The millions who go to work, who sit for long hours and labor in one place are in danger. Mid-back chairs are designed to support the middle of your back as well as your lower back. 'Nip it in the butt' or 'Nip it in the bud'? Instead, they refer to the area of your back the chair has been designed to support. The final height will be decided by your local council based on the requirements and information provided by the complainant and hedge owner. But it's not everyday that we think about the health of our backs. Post the Definition of backsight to Facebook, Share the Definition of backsight on Twitter. The entire back rest is designed to be a type of lumbar support. If you have pain or problems in these parts of your back, it may be necessary to look into purchasing a mid-back or high-back chair. info @ officechairsonly.com. Often the most expensive of the three types of chairs, the high-back chair usually features more adjusting options for a personalized and customized seating experience. What made you want to look up backsight? Back Height: Traditional height is 32", but chairs are routinely provided with backs as high as 44". To me, a low-back chair was one whose back rest came up to my lower back. Otherwise severe vertebral compression will eventually lead to severe back pain and loss of disc height. Vertebral compression fracture is diagnosed on spinal radiographs. Please tell us where you read or heard it (including the quote, if possible). If you have a highly mobile job, you may be better served by a less constrictive mid-back or low-back chair. I believed that a mid-back chair was one whose back rest stopped somewhere around the middle of back. Yet, every person will experience some form of back discomfort as a challenge in their … They also support the shoulder-blade area of your back, so that you may lean back into them without placing pressure or strain on your spine. If you do not plan to sit in your chair for extended periods of time, the extra costs associated with a high-back chair may not be beneficial to you, either. Mid-back chairs typically have shorter back rests than high-back chairs. Your lumbar spine is often supported with some type of built-in lumbar support.