REVEALING CHAIR-SIT-TO-STAND TEST CUT OFF POINTS TO DETERMINE LOW MUSCLE STRENGTH AND PROBABLE SARCOPENIA: REAL LIFE DATA

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Bahat-Öztürk G., Özer Aydın Ç., Kılıç C., Karan M. A.

World Congress on Osteoporosis, Osteoarthritis and Musculoskeletal Diseases, Barcelona, İspanya, 4 - 07 Mayıs 2023, ss.252

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: Barcelona
  • Basıldığı Ülke: İspanya
  • Sayfa Sayıları: ss.252
  • İstanbul Üniversitesi Adresli: Evet

Özet

Objective: EWGSOP2 recommends assessment of chair-sit-tostand test (CSST) as a proxy marker for muscle strength when assessment of handgrip strength (HGS) is not convenient. The recommended CSST cut-off is 15 seconds and arbitrary. We aimed to determine the CSST cut-offs that can be used as the proxy marker of low HGS to diagnose probable sarcopenia. In addition, we aimed to determine CSST cut-offs that are associated with better functionality and physical performance.

Methods: This retrospective cross-sectional study included community-dwelling adults over 60 years of age who presented as outpatients to a university hospital between November 2016 and December 2021. All were evaluated for, handgrip strength (Jamar hand dynamometer), usual gait speed, short physical performance battery, and functionality [activities of daily living (ADL), instrumental activities of daily living (IADL)]. The cutoff thresholds of CSST that were associated with low muscle strength (probable sarcopenia), better functionality and physical performance, were calculated from ROC analyses determining the corresponding sensitivity, specificity, and AUC.

Results: Included in the study were 543 older adults (69% were women; mean age: 74.1±6.4 years). The CSST cut-off that best predicted the presence of low muscle strength was 11.9 seconds (sensitivity 79%, specificity 63.6%, AUC 0.76). Corresponding CSST cut-offs for low UGS, impaired SPPB and ADL were 13.6 sn (respectively sensitivity 71.7%, specificity 83.8%, AUC 0.84, sensitivity 89.4%, specificity 87.2%, AUC 0.94 and sensitivity 51.6%, specificity 77.8%, AUC 0.68); for impaired IADL, 12.2 sn (sensitivity 71.2%, specificity 71.8%, AUC 0.55). As rounded figures to ease use, CSST cut-offs were 12 sn for low HGS and impaired IADL and 14 sn for impaired UGS,SPPB and ADL.

Conclusion: To our knowledge is the first study that reported the CSST cut-offs based on a real life data rather than the arbitrary considerations. These cut-offs have the potential to be used while  diagnosing probable sarcopenia and deciding the optimal CSST levels in practice.