《Chinese Journal of Rehabilitation Theory and Practice》 ›› 2018, Vol. 24 ›› Issue (6): 709-712.doi: 10.3969/j.issn.1006-9771.2018.06.016

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Intra- and Inter-rater Reliability of A Novel Hand-held MyotonPRO Device for Achilles Tendon Properties in Healthy Subjects

FENG Ya-nan1, LI Ya-peng1, ZHANG Zhi-jie1, ZHU Yi2, YANG Jin-chu1, LIU Chun-long3   

  1. 1. Rehabilitation Therapy Center, Luoyang Orthopedic Hospital of Henan Province, Orthopedic Hospital of Henan Province, Luoyang, Henan 471002, China;
    2. Rehabilitation Therapy Center, Hainan Province Nongken Genernal Hospital, Haikou, Hainan 570311, China;
    3. Clinical Medical College of Acupuncture, Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
  • Received:2018-02-27 Revised:2018-04-15 Published:2018-06-25 Online:2018-06-28
  • Contact: ZHANG Zhi-jie. E-mail: Sportspt@163.com

Abstract: Objective To evaluate the intra- and inter-rater reliability of MyotonPRO for Achilles tendon properties measured.Methods Twenty healthy subjects were recruited to measure Achilles tendon properties using a novel hand-held MyotonPRO device by two testers, one of the testers re-tested five days later. The reliability was assessed using intra-class correlation coefficient (ICC) and Bland-Altman analysis, and minimum detectable changes (MDC) was calculated. The Achilles tendon properties of the dominant or non-dominant leg was compared. The correlation between body mass and Achilles tendon properties was examined.Results The intra-rater reliabilities of Achilles tendon properties were ICCleft=0.884 and ICCright=0.904; the inter-rater reliabilities were ICCleft=0.883 and ICCright=0.945. The MDC was 36.64 N/m. Bland-Altman plots showed good agreement. There was no significant difference in Achilles tendon properties between dominant and non-dominant legs (t<1.236, P>0.05). The body mass positively correlated with Achilles tendon properties (r>0.477, P<0.05).Conclusion The intra- and inter-rater reliabilities of MyotonPRO were good in measuring Achilles tendon properties in healthy subjects. No significant difference was found between dominant and non-dominant legs. The body mass positively correlated with Achilles tendon properties in healthy subjects.

Key words: rehabilitation evaluation, Achilles tendon properties, reliability, MyotonPRO

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