Back to Search
Start Over
Simple standard equation for daily step count in Japanese patients with chronic obstructive pulmonary disease
- Source :
- International Journal of COPD, Vol Volume 14, Pp 1967-1977 (2019)
- Publication Year :
- 2019
- Publisher :
- Dove Medical Press, 2019.
-
Abstract
- Masanori Nakanishi,1 Yoshiaki Minakata,2 Rie Tanaka,3 Hisatoshi Sugiura,3 Hikaru Kuroda,4 Makoto Yoshida,5 Nobuyuki Yamamoto11Third Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan; 2Department of Respiratory Medicine, National Hospital Organization Wakayama Hospital, Wakayama, Japan; 3Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan; 4Department of Respiratory Medicine, National Hospital Organization Asahikawa Medical Center, Asahikawa, Hokkaido, Japan; 5Department of Respiratory Medicine, National Hospital Organization Fukuoka Hospital, Fukuoka, JapanCorrespondence: Yoshiaki MinakataDepartment of Respiratory Medicine, National Hospital Organization Wakayama Hospital, 1138 Wada Mihama-cho, Hidaka-gun, Wakayama 644-0044, JapanTel +81 73 822 3256Fax +81 73 822 2126Email minakata.yoshiaki.qy@mail.hosp.go.jpPurpose: The improvement of physical activity in patients with COPD is an important issue. However, no standard for the recommended number of steps for patients with COPD has been determined. We conducted a retrospective observational study to create a simple standard equation for the daily step count, which makes it easier to determine whether each subject is attaining his/her predicted value or not.Patients and methods: Stable outpatients diagnosed with COPD whose physical activities had been measured using a triaxial accelerometer for more than 2 weeks were recruited from 5 institutes in Japan. Factors associated with the step count were detected by multivariate regression analysis. After the data were transformed to a normalized distribution, a multivariate linear regression equation was created using stepwise regression.Results: One hundred sixty-two patients aged 72.3 (7.2) years and of FEV1 %pred 59.2 (22.8) % were recruited. Among the parameters, age, mMRC dyspnea scale and inspiratory capacity (IC) were detected by the stepwise method. The created standard equation was “Step count = (−0.079×[age]−1.595×[mMRC]+2.078×[IC]+18.149)3,”. The correlations between the calculated values and the measured values were observed, and fixed, and proportional biases between them were also observed. When patients with
Details
- Language :
- English
- ISSN :
- 11782005
- Volume :
- ume 14
- Database :
- Directory of Open Access Journals
- Journal :
- International Journal of COPD
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.10a29264297c45e79f573f160f58b280
- Document Type :
- article