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        Muscular activity is similar when sitting or standing. 
        EMG activity decreases when sitting in a forward slumped
        posture, which, adversely produces maximum pressure onthe discs. 
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        How to relax muscles without sacrificing the discs? 
        Use of an up to 110¢X reclined backrest. 
        Effect of use of lumbar support have been mixed. 
         
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