This field intervention study compared the working postures and reported musculoskeletal symptoms of participants, while using both a traditional telephone handset and a telephone headset. Twenty-six subjects from a variety of occupations participated in a cross over design. Working postures and self-reported symptoms were recorded and then compared following a month using a handset and a month of headset use. Working posture was significantly improved with the headset. A significant reduction in self-reported neck pain during the period of headset use was found.
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