title: Comparison of the prevalence of sarcopenia using skeletal muscle mass index and calf circumference applying the European consensus definition in elderly Mexican women.
abstract: OBJECTIVE
  To compare the prevalence of sarcopenia using two indicators: skeletal muscle mass index (SMI) and calf circumference (CC) used in the algorithm proposed by the European Working Group on Sarcopenia in Mexican elderly women.
  
  
  METHODS
  This was a cross-sectional study. Lean body mass was determined by dual-energy X-ray absorptiometry. To define sarcopenia, the SMI was obtained using a cut-off value of 5.5 kg/m2, and the CC cut-off was 31 cm. For gait speed and handgrip strength, the cut-off values were 0.8 m/s and 20 kg, respectively.
  
  
  RESULTS
  A total of 137 women (mean age 73.8 ± 6.7 years) participated in the study. The prevalence of sarcopenia was 14.6% using SMI and 11.0% using CC (P = 0.009). Body mass index was associated with a lower probability of sarcopenia applying SMI or CC (OR 0.75, P = 0.002 for SMI and OR 0.71, P = 0.004 for CC). Sarcopenia evaluated either with dual-energy X-ray absorptiometry or CC was not associated with physical performance, such as five times chair stand test, timed up and go test and short physical performance battery. Additionally, SMI was not associated with physical performance, five times chair stand test (P = 0.775) and timed up-and-go test (P = 0.341).
  
  
  CONCLUSIONS
  The prevalence of sarcopenia in active elderly women was low. A higher prevalence of sarcopenia was detected using SMI compared with CC. It is important to identify the best methods to assess skeletal muscle mass to obtain a reliable diagnosis of sarcopenia. Geriatr Gerontol Int 2017; 17: 161-170.
authors.affiliation: Health Care Department, Metropolitan Autonomous University, Mexico D.F., Mexico.
authors.forename: Maria Consuelo
authors.initials: MC
authors.lastname: Velazquez-Alva
authors.affiliation: Health Care Department, Metropolitan Autonomous University, Mexico D.F., Mexico.
authors.forename: Maria Esther
authors.initials: ME
authors.lastname: Irigoyen Camacho
authors.affiliation: Health Care Department, Metropolitan Autonomous University, Mexico D.F., Mexico.
authors.forename: Irina
authors.initials: I
authors.lastname: Lazarevich
authors.affiliation: Health Care Department, Metropolitan Autonomous University, Mexico D.F., Mexico.
authors.forename: Jaime
authors.initials: J
authors.lastname: Delgadillo Velazquez
authors.affiliation: Health Care Department, Metropolitan Autonomous University, Mexico D.F., Mexico.
authors.forename: Patricia
authors.initials: P
authors.lastname: Acosta Dominguez
authors.affiliation: Health Care Department, Metropolitan Autonomous University, Mexico D.F., Mexico.
authors.forename: Marco A
authors.initials: MA
authors.lastname: Zepeda Zepeda
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001823:Body Composition; D001837:Body Weights and Measures; D003430:Cross-Sectional Studies; D005260:Female; D018737:Hand Strength; D006801:Humans; D007866:Leg / Q000033:anatomy & histology*; D008800:Mexico; D008875:Middle Aged; D018482:Muscle, Skeletal; D015995:Prevalence; D055948:Sarcopenia / Q000175:diagnosis* / Q000453:epidemiology*; D012737:Sex Factors; D000072797:Walking Speed
keywords: calf circumference; elderly women; sarcopenia; skeletal muscle mass index