Functional and psychological variables both affect daily physical activity in COPD: A structural equations model
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Keywords
COPD
Physical activity
Functional capacity
Psychological capacity
Structural equations model
Abbreviations
6MWD
six-minute walking distance
CCQ
Clinical COPD Questionnaire
COPD
chronic obstructive pulmonary disease
DEFS
Dutch Exertion and Fatigue Scale
DPA
daily physical activity
FEV1
Forced Expiration Volume in one second
GARS
Groningen Activity and Restriction Scale
GOLD
global initiative for chronic obstructive lung disease
HADS
Hospital Anxiety and Depression Scale
IQR
interquartile range
PPAS
Perceived Physical Ability Subscale
PR
pulmonary rehabilitation
RMSEA
root mean square error of approximation
RV%TLC
residual volume as percentage of total lung capacity
SEM
structural equations modeling
SF-36
Short Form 36
SGRQ
St. George Respiratory Questionnaire
SPSS
Scientific Package of Social Sciences
SRQ-E
Self-Regulation Questionnaire for Exercise
VO2peak
peak oxygen uptake
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