title: Differences in physical performance based on the Geriatric Nutritional Risk Index in elderly female cardiac patients.
abstract: OBJECTIVE
  Little is known about differences in the risk of poor nutritional status as assessed by the Geriatric Nutritional Risk Index (GNRI) in relation to physical performance in elderly female cardiac inpatients. The present study aimed to determine both differences in physical performance based on the GNRI and physical performance cut-off values according to the GNRI in elderly female cardiac inpatients.
  
  
  METHODS
  We enrolled 105 consecutive female Japanese inpatients aged ≥65 years (mean age, 74.6 years) with cardiac disease in this cross-sectional study. We divided the patients into two groups according to GNRI: high-GNRI group (≥92 points) (n = 71) and low-GNRI group (<92 points) (n = 34). Handgrip strength (HG), knee extensor muscle strength (KEMS), gait speed (GS), and one-leg standing time (OLST) were assessed as indices of hospital physical performance and compared between the two groups to determine cut-off values of physical performance.
  
  
  RESULTS
  After adjustment for age and left ventricular ejection fraction, HG, KEMS, GS, and OLST were significantly lower in the low-GNRI versus high-GNRI group. Cut-off values by ROC curve analysis were 16.2 kgf (AUC = 0.66; p < 0.001) for HG, 34.3 % of body weight (AUC = 0.62; p = 0.04) for KEMS, 1.24 m/s (AUC = 0.72; p < 0.01) for GS, and 8.28 s (AUC = 0.62; p = 0.04) for OLST.
  
  
  CONCLUSIONS
  The risk of poor nutrition, as indicated by a low GNRI, might be a predictor of lower physical performance. Cut-off values determined in this study might be minimum target goals for physical performance that can be attained by elderly female cardiac inpatients.
authors.affiliation: Graduate School of Health Sciences, Kobe University, 10-2 Tomogaoka 7-Chome Suma, Kobe, 654-0142, Japan, izawapk@ga2.so-net.ne.jp.
authors.forename: Kazuhiro P
authors.initials: KP
authors.lastname: Izawa
authors.forename: Satoshi
authors.initials: S
authors.lastname: Watanabe
authors.forename: Koichiro
authors.initials: K
authors.lastname: Oka
authors.forename: Takuma
authors.initials: T
authors.lastname: Mogamiya
authors.forename: Mika
authors.initials: M
authors.lastname: Tada
authors.forename: Shuichi
authors.initials: S
authors.lastname: Nakata
authors.forename: Sato
authors.initials: S
authors.lastname: Nitobe
authors.forename: Kazuya
authors.initials: K
authors.lastname: Yoshizawa
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Hirano
authors.forename: Naohiko
authors.initials: N
authors.lastname: Osada
authors.forename: Kazuto
authors.initials: K
authors.lastname: Omiya
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shimizu
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D005260:Female; D015577:Geriatric Assessment; D018737:Hand Strength; D006331:Heart Diseases / Q000503:physiopathology*; D006801:Humans; D053580:Muscle Strength; D015596:Nutrition Assessment