COEFFICIENT OF VARIATION IN MAXIMAL AND FEIGNED STATIC AND DYNAMIC GRIP EFFORTS1
作者:
Zeevi Dvir,
期刊:
American Journal of Physical Medicine and Rehabilitation
(OVID Available online 1999)
卷期:
Volume 78,
issue 3
页码: 216-221
ISSN:0894-9115
年代: 1999
出版商: OVID
关键词: Grip;Effort;Coefficient of Variation;Isometric;Isokinetic
数据来源: OVID
摘要:
The purpose of this study was to investigate the validity of the coefficient of variation as an identifier of feigned grip effort. Seventeen healthy female aged 20 to 25 yr participated in the study. Maximal and feigned efforts were measured isometrically and isokinetically (concentric and eccentric) using the Jamar and KinCom dynamometers, respectively. Findings indicated that, in all situations, the coefficient of variation derived from the maximal effort was significantly (P< 0.0001) lower than that derived from the feigned effort. However, the extent of overlapping between the two was sufficiently large to render the test sensitivities very low. Consequently, regardless of the measurement method, the coefficient of variation is not a valid tool for identifying feigned grip effort in healthy subjects.
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