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9. PHYSICAL LOAD 9.9 Sitting back in the chair When you sit your lower back should be slightly curved and pelvis should be in central line. Thus the neck and shoulders area is relaxed and posture is ergonomically correct. When the lower back is curved outward, it leads the head and shoulders to fall forward of the central line of gravity. When the pelvis is tilted to one side, it leads the back to lean on one side. Correct pelvic posture is the keystone to ergonomic sitting. From time to time improve your sitting posture - align your back against the back of the chair. Lean back slightly and move the chair close enough to the work surface. Maintain the natural curve in your lower back. Adjust work tools to support good posture. Keep your head straight, viewing area of the monitor is below horizontal eye level. Use armrests when possible. Take regular breaks to stand up. Adapt these instructions to different seats / places, e.g. in a forklift truck and office. Consider all available adjustments, then set and modify them according to your needs. Ergonomics is a part of occupational safety. Do reverse exercises, if you notice that (e.g. when sitting in a forklift truck) repetitious movements put strain only on one side of your body. Try to lean to one side of your body only for short moments. Lean equally to both sides of your body. © Valmius Hyvinvointiin Group Oy 33


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