Impairment Measures. Cervical mobility was measured using the Cervical Range of Motion device (Performance Attainment Associates, St. Paul, MN). Several studies reported this evaluation tool to be reliable.44,45 Before measuring the cervical ROM, each subject prac- ticed two repetitions each of six motions (flexion, extension, right and
left side bending, right and left ro- tation) to increase the softtissue compliance of the neck. The tester then measured each subject’s active cervical ROM using the cervical ROM instrument. We summed the readings of six directions of neck movement and used the total cervi- cal ROM as our outcome variable. Total cervical ROM has an advan- tage as a sensitive outcome measure compared with only one plane of motion because the direction of limited cervical ROM in individual patients can vary depending on the involved tissues. Some patients have difficulty turning their heads, whereas others may have limited extension. Using total ROM as the measure can reflect the amount of impairment from the cervical dys function in both cases.
Impairment Measures. Cervical mobility was measured using the Cervical Range of Motion device (Performance Attainment Associates, St. Paul, MN). Several studies reported this evaluation tool to be reliable.44,45 Before measuring the cervical ROM, each subject prac- ticed two repetitions each of six motions (flexion, extension, right and
left side bending, right and left ro- tation) to increase the softtissue compliance of the neck. The tester then measured each subject’s active cervical ROM using the cervical ROM instrument. We summed the readings of six directions of neck movement and used the total cervi- cal ROM as our outcome variable. Total cervical ROM has an advan- tage as a sensitive outcome measure compared with only one plane of motion because the direction of limited cervical ROM in individual patients can vary depending on the involved tissues. Some patients have difficulty turning their heads, whereas others may have limited extension. Using total ROM as the measure can reflect the amount of impairment from the cervical dys function in both cases.
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