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Title: Reliability and measurement error of tensiomyography to assess mechanical muscle function: A systematic review
Authors: Martín Rodríguez, Saúl 
Loturco, Irineu
Hunter, Angus M.
Munguia-Izquierdo, Diego 
Rodríguez-Ruiz, David 
UNESCO Clasification: 241106 Fisiología del ejercicio
320404 Rehabilitación (médica)
241110 Fisiología del músculo
Keywords: Muscle contractile properties
Relative reliability
Absolute reliability
Issue Date: 2017
Journal: Journal of Strength and Conditioning Research 
Abstract: Interest in studying mechanical skeletal muscle function through tensiomyography (TMG) has increased in recent years. This systematic review aimed to (a) report the reliability and measurement error of all TMG parameters (i.e., maximum radial displacement of the muscle belly [Dm], contraction time [Tc], delay time [Td], half-relaxation time [½ Tr], and sustained contraction time [Ts]) and (b) to provide critical reflection on how to perform accurate and appropriate measurements for informing clinicians, exercise professionals, and researchers. A comprehensive literature search was performed of the Pubmed, Scopus, Science Direct, and Cochrane databases up to July 2017. Eight studies were included in this systematic review. Meta-analysis could not be performed because of the low quality of the evidence of some studies evaluated. Overall, the review of the 9 studies involving 158 participants revealed high relative reliability (intraclass correlation coefficient [ICC]) for Dm (0.91–0.99); moderate-to-high ICC for Ts (0.80–0.96), Tc (0.70–0.98), and ½ Tr (0.77–0.93); and low-to-high ICC for Td (0.60–0.98), independently of the evaluated muscles. In addition, absolute reliability (coefficient of variation [CV]) was low for all TMG parameters except for ½ Tr (CV = .20%), whereas measurement error indexes were high for this parameter. In conclusion, this study indicates that 3 of the TMG parameters (Dm, Td, and Tc) are highly reliable, whereas ½ Tr demonstrate insufficient reliability, and thus should not be used in future studies.
ISSN: 1064-8011
DOI: 10.1519/JSC.0000000000002250
Source: Journal of Strength and Conditioning Research [ISSN 1064-8011], v. 31 (12), p. 3524-3536
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