Abstract
Muscle architecture parameters performed using ultrasound serve as an aid to monitor muscle changes derived from diseases, however there are no studies that determine the reliability and applicability of this evaluation in individuals with type 2 diabetes (DM2). Three raters captured three images of measurements of thickness of the rectus femoris (RF), vastus intermedius and anterior quadriceps, RF muscle cross-sectional area, RF pennation angle in 17 individuals with DM2 above 50 and sedentary. Intra and inter-raters analysis showed reliability from high to very high for the three raters (ICC> 0.87), except for the RF pennation angle with moderate to low intra-raters (ICC = 0.58, 0.48, 0.51), and high inter-rater reliability (ICC = 0.70). Ultrasound measurements of quadriceps muscles showed high to very high intra and inter-raters reliability, thus allowing its use to monitor muscle changes provoked by diabetes or interventions in individuals with DM2.
Highlights
Diabetes mellitus facilitates the installation and development of chronic complications [1], such as diabetic neuropathy [2, 3], and sarcopenia [4]
The highest coefficient of variation (CV) was observed in pennation angle of the rectus femoris (RF) (16%), followed by RF muscle cross-sectional area (12%), while the lowest CV was in the thickness of anterior
minimal detectable difference (MDD) values varied directly in proportion to the standard error measurement (SEM) values, with a maximum value in the thickness of anterior quadriceps variable (9.14 mm), and a minimum value in the pennation angle of the RF variable (2.97 mm). This is the first study that assess the reliability of the US in muscular quadriceps architecture measurements of individuals with type 2 diabetes
Summary
Diabetes mellitus facilitates the installation and development of chronic complications [1], such as diabetic neuropathy [2, 3], and sarcopenia [4]. People with diabetes are more likely to suffer accelerated loss of mass and muscle strength over time, in the lower extremities [5, 6] which is related to the increased risk of mortality in individuals with type 2 diabetes [7]. Interventions to augment lower limb muscle strength have been suggested to enhance mobility and quality of life of patients with type 2 diabetes [8]. In this sense, physical training has been proven positive in this population, minimizing muscular deficits while allowing meaningful changes in body composition, such as fat loss and increased lean body mass with improvements in muscle strength [9, 10].
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