Supplement prediction model 127 dyspnea scale as a measure of disability in patients with chronic obstructive pulmonary disease Table 2 Descriptive statistics for the theory of planned behavior, psychological constructs, past exercise and fitness, and exercise adherence (n = 196) Planned behavior Median intention (IQR) 16.0 (14.0-17.0) Median perceived Behavioral Control (IQR) 11.0 (9.0-11.3) Median attitude (IQR) 26.0 (20.0-30.0) Median subjective Norm (IQR) 10.0 (8.0-11.0) Psychological constructs Median alliance (IQR) 47.0 (39.8-50.0) Exercise and fitness Days of MPA per week (%) - Never - 1-2 a week - 3-4 a week - ³ 5 a week 13.3 41.8 30.6 14.3 Days of VPA days per week (%) - Never - 1-2 a week - ³ 3 a week 54.1 26.5 19.4 Exercise in history (%) 62.2 Physiotherapy in history (%) 58.7 Years of physiotherapy (%) - 0-3 months - 3-6 months - 6-12 months - 1-5 years - > 5 years 14.8 7.7 6.6 30.6 40.3 Exercise adherence (after 12 months) Median adherence (IQR) 53.0 (48.8-57.0) Note: IQR: Inter Quartile Range; MPA: moderate physical activity; VPA: vigorous physical activity Exercise adherence The median score on the RAdMAT-NL was 53.0 with an IQR van 48.8 to 57.0. According to the American College of Sports Medicine guidelines, a score of at least 85% must be achieved to be adherent to the rehabilitation program [12]. This means, a minimum total score of 54 or higher must be achieved on the RAdMAT-NL to be adherent. Dichotomizing the scores at this cut-off point, showed that 57.1% (112/196) of patients in this cohort were non-adherent.
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