Compose a 750 words essay on Occupational Health and Safety. Needs to be plagiarism free!
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(ii) Similar to any mechanical system, the body might be stable or unstable and is able to bear a restricted gamut of physical pressures. Pressures might be forced internally or externally and might be severe or chronic. A helpful beginning in the deliberation of mechanical loading of the body is to differentiate between postural stress and task-induced stress. In the opinion of Grieve and Pheasant, postural stress is the expression used to signify the mechanical load on the body due to its posture. Posture can be defined as the average directions of the parts of the body in the course of time. (iii) Task-stress is dependent on the mechanical endeavor required to carry out daily tasks. It is a fact that majority of the repetitive tasks need a combination of static and rhythmic muscle activity. In case of manual work, postural stabilization of the hands and arms is important for performing all but the complete movements in a purposeful manner. (iv) This stabilization is given by the muscles more up the kinetic chain, muscles which cross the elbow and shoulder joints and have their origins in the cervical spine and thoracic areas. (v) When the task demands are quite above normal, the muscles might experience pain providing stabilization or in the muscles and joints of the effectors, or in both. In a period of time, a medical condition might develop. (Bridger 4-5)