OBJECTIVES: To validate self-reported preclinical mobility limitation concept and self-report assessment method against muscle power and walking speed, and to study the predictive validity of preclinical mobility limitation with respect to future risk of manifest mobility limitation. DESIGN: Observational prospective cohort study and cross-sectional analysis. SETTING: Research laboratory and community. PARTICIPANTS: A total of 632 community-living (age range, 75-81 y) women and men took part in the baseline assessments and 302 persons in the semi-annual interviews on mobility limitation over 2 years. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Walking speed, muscle power, and self-reported preclinical and manifest mobility limitation. Preclinical mobility limitation was defined as self-reported tiredness or modification of task performance without task difficulty. At baseline, 4 subgroups were created according to self-reported preclinical mobility limitation in any of 3 mobility tasks (walking 2 km, walking 0.5 km, climbing up stairs): no limitation, preclinical limitation, and minor and major manifest limitation. RESULTS: At baseline, participants with preclinical mobility limitation showed intermediate levels of walking speed and muscle power, compared with those with no limitation or manifest mobility limitation. Participants reporting baseline preclinical mobility limitation had 3- to 6-fold higher age- and sex-adjusted risk of progressing to major manifest mobility limitation during the 2-year follow-up compared with participants with no limitation at baseline, whereas the risk among those with minor limitation at baseline was 14- to 18-fold higher compared with those with no limitation. CONCLUSIONS: The self-report assessment tool proved to be a valid measure to capture the early signs of disability and may serve as an inexpensive tool for identifying those nondisabled persons at high risk for future disability.
OBJECTIVES: To validate self-reported preclinical mobility limitation concept and self-report assessment method against muscle power and walking speed, and to study the predictive validity of preclinical mobility limitation with respect to future risk of manifest mobility limitation. DESIGN: Observational prospective cohort study and cross-sectional analysis. SETTING: Research laboratory and community. PARTICIPANTS: A total of 632 community-living (age range, 75-81 y) women and men took part in the baseline assessments and 302 persons in the semi-annual interviews on mobility limitation over 2 years. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Walking speed, muscle power, and self-reported preclinical and manifest mobility limitation. Preclinical mobility limitation was defined as self-reported tiredness or modification of task performance without task difficulty. At baseline, 4 subgroups were created according to self-reported preclinical mobility limitation in any of 3 mobility tasks (walking 2 km, walking 0.5 km, climbing up stairs): no limitation, preclinical limitation, and minor and major manifest limitation. RESULTS: At baseline, participants with preclinical mobility limitation showed intermediate levels of walking speed and muscle power, compared with those with no limitation or manifest mobility limitation. Participants reporting baseline preclinical mobility limitation had 3- to 6-fold higher age- and sex-adjusted risk of progressing to major manifest mobility limitation during the 2-year follow-up compared with participants with no limitation at baseline, whereas the risk among those with minor limitation at baseline was 14- to 18-fold higher compared with those with no limitation. CONCLUSIONS: The self-report assessment tool proved to be a valid measure to capture the early signs of disability and may serve as an inexpensive tool for identifying those nondisabled persons at high risk for future disability.
Authors: Janne Sallinen; Sari Stenholm; Taina Rantanen; Markku Heliövaara; Päivi Sainio; Seppo Koskinen Journal: J Am Geriatr Soc Date: 2010-09 Impact factor: 5.562
Authors: Torrance J Higgins; Christopher M Janelle; Kelly M Naugle; Jeffrey Knaggs; Brian M Hoover; Michael Marsiske; Todd M Manini Journal: Arch Gerontol Geriatr Date: 2012-07-06 Impact factor: 3.250
Authors: Urho M Kujala; Pekka Hautasaari; Henri Vähä-Ypyä; Katja Waller; Noora Lindgren; Paula Iso-Markku; Kauko Heikkilä; Juha Rinne; Jaakko Kaprio; Harri Sievänen Journal: Ann Med Date: 2019-03-05 Impact factor: 4.709
Authors: Marla K Beauchamp; Suzanne G Leveille; Kushang V Patel; Dan K Kiely; Caroline L Phillips; Stefania Bandinelli; Luigi Ferrucci; Jack Guralnik; Jonathan F Bean Journal: Am J Phys Med Rehabil Date: 2014-05 Impact factor: 2.159
Authors: Carol Ewing Garber; Mary L Greaney; Deborah Riebe; Claudio R Nigg; Patricia A Burbank; Phillip G Clark Journal: BMC Geriatr Date: 2010-02-03 Impact factor: 3.921