title: Sarcopenia and its associated factors in Iranian older individuals: Results of SARIR study.
abstract: Sarcopenia, an age- related loss of muscle mass, is a significant associating factor for functional impairment among older adults. The aim of this study was to investigate the prevalence of and associated factors for sarcopenia and severe sarcopenia among older adults in Iran.
  
  
  
  A total of 300 individuals aged over 55 years were randomly selected from the 6th district of Tehran, Iran, in 2011. Sarcopenia was defined according to the European Working Group on Sarcopenia in Older People (EWGSOP) algorithm. The skeletal muscle mass was assessed using DXA. Muscle strength and muscle performance were assessed according to hand grip strength and 4-m usual walking gait speed test. A logistic regression analysis was performed.
  
  
  
  The prevalence values of presarcopenia, sarcopenia, and severe sarcopenia were 52.7%, 20.7%, and 6%, in men and 25.3%, 15.3%, and 5.3% in women, respectively. The prevalence of sarcopenia was higher in men older than 75 years than women in the same age range (36.7% versus 20%, respectively). Using multiple logistic regression models, age, sex, smoking, and body mass index (BMI) were independently associated with different stages of sarcopenia.
  
  
  
  The prevalence of sarcopenia is high in Iranian older adults. The older age, male sex, smoking and lower BMI were independently associated with presarcopenia, sarcopenia and severe sarcopenia.
authors.affiliation: School of Nutritional Sciences and Dietetics, Ziaeian Hospital, Tehran University of Medical Science, Tehran, Iran.
authors.forename: Rezvan
authors.initials: R
authors.lastname: Hashemi
authors.affiliation: Chronic Diseases Research Center (CDRC), Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, No 111, 19th St., North Kargar Ave., Tehran 14114, Iran. Electronic address: g-shafiee@razi.tums.ac.ir.
authors.forename: Gita
authors.initials: G
authors.lastname: Shafiee
authors.affiliation: School of Nutritional Sciences and Dietetics, Tehran University of Medical Science, Tehran, Iran.
authors.forename: Ahmadreza Dorosty
authors.initials: AD
authors.lastname: Motlagh
authors.affiliation: Endocrinology & Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Parvin
authors.initials: P
authors.lastname: Pasalar
authors.affiliation: Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Esmailzadeh
authors.affiliation: Department of Nutrition and Biochemistry, Faculty of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Fereydoun
authors.initials: F
authors.lastname: Siassi
authors.affiliation: Endocrinology & Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Bagher
authors.initials: B
authors.lastname: Larijani
authors.affiliation: Chronic Diseases Research Center (CDRC), Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, No 111, 19th St., North Kargar Ave., Tehran 14114, Iran. Electronic address: rheshmat@tums.ac.ir.
authors.forename: Ramin
authors.initials: R
authors.lastname: Heshmat
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015992:Body Mass Index; D005260:Female; D005684:Gait; D018737:Hand Strength; D006801:Humans; D007492:Iran / Q000453:epidemiology; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D053580:Muscle Strength; D018482:Muscle, Skeletal / Q000503:physiopathology*; D015995:Prevalence; D055948:Sarcopenia / Q000453:epidemiology* / Q000503:physiopathology; D012720:Severity of Illness Index; D017678:Sex Distribution; D012907:Smoking / Q000453:epidemiology; D055105:Waist Circumference; D000072797:Walking Speed
keywords: Adult; Factor; Prevalence; Sarcopenia