Our very own answers are in accordance with that from McCrory mais aussi al

One reason for the good reproducibility on the group level for model 1, despite only making use of three submaximumimal work rates, can be the span of the HR attained between work rate 1 and 3 (in average 98–137 and 98–150 for males and females, respectively). It is equally important that the utilized ranges of HR from cycle commuting (in average 113–149 and 118–154 for males and females, respectively) are within, or only slightly above, the range of the HR from the work rates in the laboratory (cf. Tables 3 and 5). If instead VO₂ would be estimated from higher or lower HR than those established in the laboratory, it is possible that greater test-retest differences would be seen (cf. Fig 1).

Ultimately, new steps of 24-time Hour because of the Christensen ainsi que al

A comment on the field heart rates used is that almost half the cyclists were tested in the laboratory at a different time of day compared to their cycle commuting tests. However, McCrory et al. found that within-day variations were not significantly different at the higher activity levels in their study, i.e. normal to fast walking. Thus our population probably had levels of intensity that were high enough to eliminate circadian influences. Another comment favoring a stability in the measurement conditions is that the mean values for the positions of % HR_max used to establish the HR-VO₂ relations related well to the expected VO₂ relative to VO_2max in both sexes .

, and considerably more favourable in relation to using the HR-VO₂ method than those indicated by Christensen et al. . There are several explanations for that. The measurements used by Christensen et al. for establishing HR-VO₂ regression equations were resting and sitting, as well as three low to intermediate exercise rates on an ergometer cycle (8–100 watt) and three exercise rates on a treadmill, thus altogether eight measurement points. For both the slope and the y-intercept of the regression equations, the measurements at low levels of HR are, under those circumstances, more influential. At the same time it is well known that the HR-VO₂ ratios at rest and sitting are quite unstable, resulting in variations in regression equations [11, 25, 41]. ₂ and HR will be higher after a certain HR level, which has been termed “flex HR” [12, 42, 43], which could be another reason for the results of Christensen et al. . Furthermore, they mixed the work forms of cycle ergometer and treadmill as bases for the HR-VO₂ measures, which is in itself problematic, since the HR response for a given VO₂ can differ in these different forms of movement . This creates a greater risk for non-stability in regression equations with repeated measurements. resulted in a mean value of 86 beats per minute. In line with the reasoning in the Introduction (cf. Fig 1) a heart rate close to the endpoint of the spectrum of measurement points forming the regression equation will most probably lead to lower reproducibility. Another potential explanation for their results relates to their use of a heterogeneous sample of predominantly patients and large variations in age, whereas we studied a sample of healthy and physically active middle aged individuals.

With stated that, one has to just remember that , the new additional authenticity off kod promocyjny chatstep the findings regarding other types of members try unclear. Therefore, so you can submit the overall studies throughout these respects, there clearly was in fact a need for further degree ones matters.

Furthermore, we do not know any single thing concerning the outside validity of your Hours means on the research in terms of field standards instance because the while in the duration travelling. Around three research has tested the fresh new intensity of stage commuting playing with various other Hr tips within the examples of low-regular years commuters [forty five, 46, 47]. Although not, not one of these knowledge thought that, having reasons including cardiovascular float having stretched work times [several, forty-eight, 49] or worry because of visitors standards [50, 51], the partnership counted throughout the laboratory can vary whenever staying in a period driving ecosystem, and therefore consequently the conveyed concentration of course driving could be incorrect. That is the main focus inside our next training.