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Neck Muscle Fatigue And Postural Control In Patients With Whiplash Injury, Paul Stapley, Maria Beretta, Elena Toffola, Marco Schieppati
Neck Muscle Fatigue And Postural Control In Patients With Whiplash Injury, Paul Stapley, Maria Beretta, Elena Toffola, Marco Schieppati
Dr Paul J Stapley
Objectives: To examine if patients with whiplash injury show identifiable increases in neck muscle fatigability and associated increase in postural body sway after contractions of dorsal neck muscles, and if physiotherapy treatment reduces these effects. Methods: Sway was measured during stance in 13 patients before and after 5 min of isometric dorsal neck muscle contractions and after recovery, pre- and post-physiotherapy, using a force platform. Amplitude and median frequency of neck muscle EMG were calculated during the contracting period. After each stance trial, patients gave a subjective score of sway. Results: Pre-treatment, seven patients showed EMG signs of fatigue (increases …