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    Determination the validity of the new developed sport expert hand grip dynamometer measuring continuity of force and comparison with current takei and baseline dynamometers
    (Edizioni Minerva Medica, 2015) Güçlüöver, Aziz; Kutlu, Mehmet; Cigerci, Ali Erdem; Esen, H. Tolga; Demirkan, Erkan; Erdoğdu, Murat
    Aim. In this study the Sport Experts (TM) brand of hand grip dynamometer, measuring the continuity of force with the new developed load cell technology, was compared with Takei and Baseline (R) dynamometers, the current in use. It was tried to determine the correlation between them. In a study with provides use of clinical, orthopedic and rehabilitative purposes in the athletes and patient populations, this developed dynamometer can provide useful data by observing the continuity of force. Methods. The sample of the study included 60 badminton players in 2010-2011; consisting of Turkish Junior National male players (N.=16, age: 16.8 +/- 1.5), Junior National female players (N.=14, age: 16.9 +/- 1.6), amateur level male players (N.=15, age: 16.3 +/- 0.8) and amateur level female players (N.=15, age: 16.1 +/- 0.6). ANOVA was used in the statistical methods in order to compare the hand grip strength made by different brands; Pearson's correlation coefficient was used to determine the relationship level between dynamometers. Furthermore, test-retest reliability analysis was completed the new developed expert dynamometer. Results. There was no statistically significant difference in the comparison of the dynamometers (P>0.05). Besides, a highly significant relationship (r=0.95 to 0.96) was found among all three dynamometers. However, the reliability coefficient was found (Chronbachs alpha: 0.989, ICC:0.97, r=0.97), (P<0.01) for the new developed expert dynamometer. Conclusion. Comparison between the dynamometers and the statistical results obtained from the correlation relationships shows interchangeability of dynamometers. As a result, our observation of force continuity (progression) of the athlete and patient populations is thought to be important.