masterThesis
Alterações antropométricas e bioelétricas em decorrência da sarcopenia em idosos: International Mobility in Aging Study IMIAS Brasil
Fecha
2020-09-09Registro en:
MORAIS, Marcely Araújo de. Alterações antropométricas e bioelétricas em decorrência da sarcopenia em idosos: International Mobility in Aging Study IMIAS Brasil. 2020. 83f. Dissertação (Mestrado em Nutrição) - Centro de Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal, 2020.
Autor
Morais, Marcely Araújo de
Resumen
Sarcopenia is a syndrome characterized by reduced muscle mass, muscle
strength, and physical performance. It is considered one of the principal causes of
disability in older adults, which implies impairments in functional capacity and quality
of life. There are many factors involved in its geneses, such as decreased protein
synthesis, proteolysis, changes in neuromuscular integrity, and fat content. This study
evaluated the relationship between sarcopenia and anthropometric and bioelectric
parameters in older adults. This study is a cross-sectional nested in a cohort, of the
3rd wave of the International Mobility in the Aging Study - IMIAS Brasil project in 2016,
with the participation of 169 older adults. Anthropometric and bioelectric data were
collected to assess nutritional status. We used anthropometric data to calculate the
body mass index (BMI), and bioelectric data to define the skeletal muscle mass index
(MMI). The diagnosis of sarcopenia was obtained using low muscle mass, strength,
and physical performance assessment. The bioelectrical impedance vector analysis
(BIVA) was used the phase angle (PA). In older adult participants, 14.8% had
sarcopenia. Regarding anthropometric nutritional status, 7.1% were thin, and 69.8%
were overweight. Older adults with sarcopenia had a lower BMI and arm, calf, and
muscle perimeter values than those without these conditions (p<0.05). PA values were
lower for men with sarcopenia (p<0.003). In the analysis stratified by sex according to
the BIVA, groups of older adults with sarcopenia had longer vectors compared to the
others (p<0.0001). When plotting individual vectors, we observed reduced cell mass in
71% of women and 36% of men with sarcopenia. In conclusion, older adults with
sarcopenia had lower values of anthropometric parameters regarding muscularity.
Also, they had a bioelectric nutritional profile with impaired cellularity.