Self-reported physical activity compared with maximal oxygen uptake in adults
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Self-reported physical activity compared with maximal oxygen uptake in adults. / Aadahl, Mette; Kjær, Michael; Kristensen, Jens H.; Mollerup, Birgit; Jørgensen, Torben.
I: European Journal of Preventive Cardiology, Bind 14, Nr. 3, 06.2007, s. 422-428.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - Self-reported physical activity compared with maximal oxygen uptake in adults
AU - Aadahl, Mette
AU - Kjær, Michael
AU - Kristensen, Jens H.
AU - Mollerup, Birgit
AU - Jørgensen, Torben
PY - 2007/6
Y1 - 2007/6
N2 - Physical activity level and cardiorespiratory fitness are both inversely associated with the risk of cardiovascular diseases and with all-cause mortality. Physical activity questionnaires are often validated against objectively measured maximal oxygen uptake (Vo2max). To validate a self-report physical activity questionnaire against Vo2max and furthermore to establish whether a simple question on self-rated physical fitness could predict objectively measured Vo2max. A total of 102 men and women aged between 35 and 65 years were recruited from an ongoing population-based intervention study, the Inter99 Study. Participants reported their self-rated fitness and daily physical activity using a new questionnaire based on metabolic equivalents (MET). Vo2max (ml/kg per min) was determined using a graded bicycle test with increasing workload until exhaustion and with simultaneous measurement of breath-to-breath oxygen uptake in 15-s periods. Statistical analyses were performed by linear regression analyses using the self-reported physical activity level as an independent variable and Vo2max (l/min) as an dependent variable, and with covariates sex, age and bodyweight. Data from 53 men and 47 women were analysed. The amount of daily vigorous activity (>6 MET) was significantly positively associated with Vo2max (P=0.0001, R 2 = 0.76), whereas the total amount of physical activity was not significantly associated with Vo2max (P=0.098, R 2 = 0.69). A significant trend across three groups of self-rated fitness in relation to Vo2max (ml/kg per min) was found (P for trend <0.0001). The physical activity questionnaire has acceptable validity when compared with Vo2max in adult men and women. Furthermore, a simple question on self-rated fitness seems to reflect measured Vo2max objectively.
AB - Physical activity level and cardiorespiratory fitness are both inversely associated with the risk of cardiovascular diseases and with all-cause mortality. Physical activity questionnaires are often validated against objectively measured maximal oxygen uptake (Vo2max). To validate a self-report physical activity questionnaire against Vo2max and furthermore to establish whether a simple question on self-rated physical fitness could predict objectively measured Vo2max. A total of 102 men and women aged between 35 and 65 years were recruited from an ongoing population-based intervention study, the Inter99 Study. Participants reported their self-rated fitness and daily physical activity using a new questionnaire based on metabolic equivalents (MET). Vo2max (ml/kg per min) was determined using a graded bicycle test with increasing workload until exhaustion and with simultaneous measurement of breath-to-breath oxygen uptake in 15-s periods. Statistical analyses were performed by linear regression analyses using the self-reported physical activity level as an independent variable and Vo2max (l/min) as an dependent variable, and with covariates sex, age and bodyweight. Data from 53 men and 47 women were analysed. The amount of daily vigorous activity (>6 MET) was significantly positively associated with Vo2max (P=0.0001, R 2 = 0.76), whereas the total amount of physical activity was not significantly associated with Vo2max (P=0.098, R 2 = 0.69). A significant trend across three groups of self-rated fitness in relation to Vo2max (ml/kg per min) was found (P for trend <0.0001). The physical activity questionnaire has acceptable validity when compared with Vo2max in adult men and women. Furthermore, a simple question on self-rated fitness seems to reflect measured Vo2max objectively.
KW - maximal oxygen uptake
KW - physical activity
KW - questionnaire
KW - validation
UR - http://www.scopus.com/inward/record.url?scp=34250627198&partnerID=8YFLogxK
U2 - 10.1097/HJR.0b013e3280128d00
DO - 10.1097/HJR.0b013e3280128d00
M3 - Journal article
C2 - 17568243
AN - SCOPUS:34250627198
VL - 14
SP - 422
EP - 428
JO - European Journal of Preventive Cardiology
JF - European Journal of Preventive Cardiology
SN - 2047-4873
IS - 3
ER -
ID: 242208721