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The dynamic control ratio at the equilibrium point (DCRe): introducing relative and absolute reliability scores.
- Source :
-
Journal of Sports Sciences . Apr2017, Vol. 35 Issue 7, p688-693. 6p. 3 Charts, 1 Graph. - Publication Year :
- 2017
-
Abstract
- Analytical methods to assess thigh muscle balance need to provide reliable data to allow meaningful interpretation. However, reproducibility of the dynamic control ratio at the equilibrium point has not been evaluated yet. Therefore, the aim of this study was to compare relative and absolute reliability indices of its angle and moment values with conventional and functional hamstring–quadriceps ratios. Furthermore, effects of familiarisation and angular velocity on reproducibility were analysed. A number of 33 male volunteers participated in 3 identical test sessions. Peak moments (PMs) were determined unilaterally during maximum concentric and eccentric knee flexion (prone) and extension (supine position) at 0.53, 1.57 and 2.62 rad · s–1. A repeated measure, ANOVA, confirmed systematic bias. Intra-class correlation coefficients and standard errors of measurement indicated relative and absolute reliability. Correlation coefficients were averaged over respective factors and tested for significant differences. All balance scores showed comparable low-to-moderate relative (<0.8–0.9) and good absolute reliability (<10%). Relative reproducibility of dynamic control equilibrium parameters augmented with increasing angular velocity, but not with familiarisation. At 2.62 rad · s–1, high (moment: 0.906) to moderate (angle: 0.833) relative reliability scores with accordingly high absolute indices (4.9% and 6.4%) became apparent. Thus, the dynamic control equilibrium is an equivalent method for the reliable assessment of thigh muscle balance. [ABSTRACT FROM AUTHOR]
- Subjects :
- *KNEE physiology
*SPRAIN prevention
*THIGH
*QUADRICEPS muscle physiology
*HAMSTRING muscle physiology
*ANALYSIS of variance
*ANTHROPOMETRY
*CONFIDENCE intervals
*STATISTICAL correlation
*EXERCISE physiology
*EXERCISE tests
*ISOKINETIC exercise
*RANGE of motion of joints
*MUSCLE contraction
*MUSCLE strength
*MUSCLE strength testing
*RELIABILITY (Personality trait)
*STATISTICS
*DATA analysis
*STATISTICAL reliability
*REPEATED measures design
*DATA analysis software
*DESCRIPTIVE statistics
*INTRACLASS correlation
*PHYSIOLOGY
RESEARCH evaluation
Subjects
Details
- Language :
- English
- ISSN :
- 02640414
- Volume :
- 35
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Journal of Sports Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 120748740
- Full Text :
- https://doi.org/10.1080/02640414.2016.1184298