Table S1.

COPEX questionnaire and response rates among 719 COPD patients

	COPEX questionnaire		Response rate n (%)
Q1A	How often do you exercise at least half an hour at a time during the spring, summer, and autumn seasons (at least mildly perspiring and being out of breath)?
	1. Daily		113 (16.1%)
	2. 4–6 times a week		117 (16.6%)
	3. 2–3 times a week		202 (28.7%)
	4. Once a week		85 (12.1%)
	5. 2–3 times a month		65 (9.2%)
	6. A few times or less		121 (17.2%)
			Total 703
Q1B	How often do you exercise at least half an hour at a time during the winter season (at least mildly perspiring and getting out of breath)?
	1. Daily		71 (10.1%)
	2. 4–6 times a week		78 (11.1%)
	3. 2–3 times a week		202 (28.8%)
	4. Once a week		109 (15.5%)
	5. 2–3 times a month		71 (10.1%)
	6. A few times or less		170 (24.3%)
			Total 701
Q2	How many minutes do you walk or cycle daily on your way to work?
	1. I do not work or I work at home		611 (87.8%)
	2. I go to work by motor vehicle		35 (5.0%)
	3. <15 minutes a day		12 (1.7%)
	4. 15–29 minutes a day		17 (2.4%)
	5. >30 minutes a day		21 (3.0%)
			Total 696
Q3	How physically strenuous is your work?
	1. I do not work		614 (87.3%)
	2. I mostly sit		37 (5.4%)
	3. I walk a lot, but I do not lift or carry heavy items		24 (3.4%)
	4. I walk a lot, lift and carry items, and climb stairs or uphill		23 (3.3%)
	5. My work is heavy physical labor		5 (0.7%)
			Total 703
Q4	Domestic activities that you do every week (mean ± SD)		Time (min)	Mean*
	1. Vacuuming, cleaning	____ h ____ min/week	430 (60%)	85 (±66)
	2. Gardening, yard work	____h ____ min/week	197 (27.5%)	206 (±192)
	3. Shopping	____h ____ min/week	572 (80%)	157 (±116)
	4. Taking care of children	____h ____ min/week	42 (5.9%)	362 (±386)
	5. Taking the dog out	____ h ____ min/week	72 (10%)	383 (±246)
	6. Something else	____ h ____ min/week	79 (11%)	313 (±300)
Q5	Sports that you have practiced during the last year
	Gym workout		62/9%
	Gymnastics		21/3%
	Dancing (anything)		18/3%
	Walking		235/33%
	Jogging		4/1%
	Cycling (in or out)		68/9%
	Swimming		48/7%
	Water aerobics		29/4%
	Water running		34/5%
	Yoga		7/1%
	Skiing		20/3%
	None		194/27%
Q6	My exercising is restricted because (of):
	1. Shortness of breath		480 (67%)
	2. Other illnesses (three most common)		301 (42%)
	3. Pain		260 (36%)
	4. I have been warned not to stress myself physically		44 (6.1%)
	5. Strenuous exercise feels uncomfortable		146 (20%)
	6. I do not feel safe outdoors		46 (6.4%)
	7. Why should I exercise?		10 (1.4%)
	8. I don’t know where to exercise		22 (3.1%)
	9. I don’t know how to exercise		13 (1.8%)
	10. I don’t have time to exercise		13 (1.8%)
	11. I lack the company		51 (7.1%)
	12. Bad weather conditions		121 (17%)
	13. Exercising is too expensive		37 (5.2%)
	14. I have no possibilities to exercise in the neighborhood		17 (2.4%)
	15. Fear of injury		48 (6.7%)
	16. Another obstacle: what?		88 (12%)
Q7	If pulmonary disease prevents your exercising, which of the next choices describes your situation best?
	1. I am mostly up all day doing light household duties in- and outside when needed		36 (6%)
	2. I stay most of the day inside resting, and go out only when it is necessary		130 (23%)
	3. I stay most of the day inside resting and need help when I leave the house		397 (71%)
			Total 563
Q8	Which of the following describes your situation best?
	0. Not troubled with breathlessness except with strenuous exercise		69 (10.3%)
	1. Troubled by shortness of breath when hurrying on the level or walking up a slight hill		263 (39%)
	2. Walk slower than people of the same age on the level because of breathlessness or have to stop for breath when walking at own pace on the level		202 (30%)
	3. Stop for breath after walking about 100 yards or after a few minutes on the level		96 (14.3%)
	4. Too breathless to leave the house or breathless when dressing or undressing		41 (6.1%)
			Total 671
Q9	Has your pulmonary disease affected your exercise habits?
	1. I have given up exercising		71 (11%)
	2. I have significantly diminished exercising		219 (34%)
	3. I have started exercising		62 (9.6%)
	4. I avoid all strenuous physical activity and shortness of breath		95 (15%)
	5. I have not changed my exercise habits		198 (31%)
			Total 645
Q10	Did you compete in sports during your childhood or adolescence?		Yes 244 (35%)
			No 454 (65%)
			Total 698
Q11	Have you received any guidance on how to exercise due to your pulmonary disease?
	1. No, I have not		445 (65%)
	2. Yes, from a physician		97 (14%)
	3. Yes, from a physiotherapist		144 (21%)
	4. Yes, from a nurse		57 (8.3%)
	5. Yes, from somebody else: who?		39 (5.6%)
			Total 690
Q12	Have you previously participated in pulmonary rehabilitation?
	1. Yes, as an inpatient for a rehabilitation course for several days in row		71 (10%)
	2. Yes, guidance by a physiotherapist to exercise by myself or as an outpatient under supervision in a group		25 (3.8%)
	3. No, I have not		590 (85%)
			Total 691
Q13	Have you got enough information about the role of physical activity in prognosis of your pulmonary disease?
	1. Yes		316 (46%)
	2. No		377 (54%)
			Total 693
Q14	Would you be interested in participating in pulmonary rehabilitation supporting, in particular, physical activity and coordinated by a lung physician and physiotherapist?		158 (23.2%)
	1. Yes, 1–3 times a week in a small group for 2–3 months		229 (34%)
	2. Yes, 1–2 weeks as an inpatient in a rehabilitation center		192 (28%)
	3. I exercise as much as possible. I do not believe that I need pulmonary rehabilitation		102 (15%)
	4. I am not interested in pulmonary rehabilitation		Total 681
Q15	Have you been smoking during the last 6 months?
	1. Daily		212 (29.9%)
	2. Every now and then		61 (8.6%)
	3. Not at all		436 (61.5%)
			Total 709
Q16	During the last 6 months, has your weight
	1. Stayed the same?		374 (53%)
	2. Increased 2 kilograms or more?		195 (28%)
	3. Decreased 2 kilograms or more?		137 (19%)

Abbreviations: COPEX, COPd Exercise Study; COPD, chronic obstructive pulmonary disease.