Reliability and validity of self-reported physical activity in the Nord-Trøndelag Health Study (HUNT 2)

Abstract

The HUNT 2 question for "hard" LTPA has acceptable repeatability and appears to be a reasonably valid measure of vigorous activity, as reflected in moderate correlations with several other measures including VO(2max), and with corresponding results from IPAQ and ActiReg. The HUNT 2 question on occupational activity had good repeatability and appears to best reflect time spent in moderate activity, with moderate associations with measured time at intermediate intensity levels. The "light" activity question from HUNT 2 had poor reproducibility and did not correlate well with most of the comparison measures. Thus, the "hard" PA and the occupational activity question should be useful measures of vigorous PA, if time and space allow only very brief assessment. The utility of the "light" PA questions remains to be established.

The adverse association of diabetes with risk of first acute myocardial infarction is modified by physical activity and body mass index: prospective data from the HUNT Study, Norway

“…Nevertheless, regularly performed physical activity has been shown to improve physical fitness in people with type 2 diabetes [33], suggesting that self-reported physical activity, at least to some degree, may reflect the participants' physical fitness. The findings regarding hard activity in the present study have been found to correlate well with reported maximal oxygen consumption (V O 2max ) in a subsample of young men [34], while light activity showed no correlation. Although light activity did not correlate withV O 2max , it may elicit other biological mechanisms that are beneficial for cardiovascular health (e.g.…”

“…Although light activity did not correlate withV O 2max , it may elicit other biological mechanisms that are beneficial for cardiovascular health (e.g. improved glycaemic control) [34]. A recent study that objectively assessed ambulatory activity found that both baseline levels and changes in ambulatory activity displayed a graded inverse association with subsequent risk of cardiovascular events [35].…”

Impact of gender on vitamin D deficiency in morbidly obese patients: a cross-sectional study

“…Patients were classified as physically active if they conducted X60 min of vigorous intensity aerobic physical activity per week (Kurtze et al, 2007).…”

Two short questionnaires on leisure-time physical activity compared with serum lipids, anthropometric measurements and aerobic power in a suburban population from Oslo, Norway

“…A recent validation study in young men concluded that the utility of the CONOR light LPA instrument remains to be established [15]. Light PA is in general less easily remembered and reported [24] and more prone to overestimation compared with heavier activities [25].…”

“…For the CONOR instrument, a validation study performed in a random sample of men aged 20-39 years found moderate agreement for hard LPA with accelerometer (Spearman's rho=0.31) and VO 2max (rho=0.46) [15]. In the case of light LPA no significant correlation was found.…”