Purpose
To validate the use of QSE for muscle elasticity mapping as a possible clinical and quantitative tool and to compare quantitatively the QSE mapping obtained in the vastus lateralis muscles of young adults when submitted to a program of training.
Methods and materials
Twenty-eight healthy males volunteers (mean age 20 ± 3.3 years),
participated in this study,
divided into two groups: control group and training group.
From the training group,
11 performed a concentric training and 9 submitted an eccentric training,
during 15 weeks,
on a total of 45 training sessions.
All the participants were submitted to an ultrasound evaluation of the vastus lateralis on transverse plan before and after the 12 weeks of training program.
Results
It was found high intra-evaluation reliability for colour mapping values by QSE ultrasound.
In few cases,
ICC was below the acceptable 0.70 levels.
Vastus lateralis muscle was defined as a soft tissue,
with higher percentage of green colour,
followed by the blue colour when in rest.
In generally,
there were significant differences on red colour percentage between the first and second evaluations and between the rest and contraction,
showing on these two evaluations a less percentage of red colour that is an increase on the...
Conclusion
Vastus laterallis muscle is defined as a soft tissue,
with higher percentage of green colour,
followed by the blue colour when in rest.
Generally,
significant differences on red colour percentage between the first and second evaluations and between the rest and contraction,
showing on these two evaluations a less percentage of red colour that is an increase on the tissue hardness after dynamic exercise.
This is due the fact of the repetitive muscle contractions frequently increase the intramuscular pressure resulting from fluid accumulation,
and it...
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