Purpose: To investigate the frequency and force of chest vibration as applied by 18 physiotherapists working in a teaching hospital. Method: Chest vibration was applied to a healthy adult male lying supine on a plinth with seven mounted sensors measuring frequency and force, during three test conditions: (1) directly on the chest, (2) on the chest through a layer of sheet, and (3) on the chest through a layer of towelling. The influence of gender and current practice area (physiotherapists working in cardiopulmonary areas [cardiopulmonary physiotherapists] and physiotherapists who presently did not work in the cardiopulmonary area, but had treated cardiopulmonary patients within the last year [general practice physiotherapists]) on the frequency and force of chest vibrations was examined. Results: Physiotherapists demonstrated a mean frequency of 5.7, 5.3, and 5 Hz and a mean maximum force of 272.78, 273.47, and 271.13 N for conditions 1, 2, and 3 respectively. There were no significant differences in the frequency or forces generated by vibration between cardiopulmonary and general practice physiotherapists, between genders, or among the three test conditions. Conclusions: Vibration frequency was lower and force higher than previously recorded. Force may vary depending on the patient. The addition of a sheet or towel did not affect the force or frequency of vibration compared to vibration performed directly on the chest. RÉ SUMÉObjet : Enquê ter sur la fré quence et sur la force de la vibration thoracique appliqué e par 18 physiothé rapeutes qui travaillent dans un hô pital d'enseignement. Me´thodologie : La vibration thoracique a é té appliqué e à un homme adulte et en santé en position allongé e sur un socle avec sept capteurs monté s pour mesurer la fré quence et la force, durant trois conditions d'essai : 1) directement sur le thorax, 2) sur le thorax à travers l'é paisseur d'un drap et 3) sur le thorax à travers l'é paisseur d'une serviette. On a examiné l'influence du sexe et du champ d'exercice actuel (les physiothé rapeutes qui travaillent dans les domaines des maladies cardio-pulmonaires [physiothé rapeutes cardio-pulmonaires] et les physiothé rapeutes qui ne travaillaient pas dans le domaine cardio-pulmonaire, mais avaient traité des patients cardio-pulmonaires au cours de la derniè re anné e [physiothé rapeutes de pratique gé né rale]) sur la fré quence et la force de la vibration pectorale. Re´sultats : Les physiothé rapeutes ont dé montré une fré quence moyenne de 5,7, 5,3 et 5 Hz et une force maximale moyenne de 272,78, 273,47 et 271,13 N pour les conditions 1, 2 et 3, respectivement. Il n'y a pas eu de diffé rences importantes dans la fré quence ou les forces gé né ré es par la vibration entre les physiothé rapeutes cardio-pulmonaires et de pratique gé né rale, selon le sexe ni entre les conditions des trois essais. Conclusion : La fré quence de la vibration é tait plus faible et la force plus é levé e que celles inscrites pré cé demment. La force peut varier selon le patient. L'ajout ...
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