The participants was in fact fulfilled from the their appointed address by one of the latest detectives, who appeared that the pre-test standardization strategies, since discussed above, was observed. 17 of one’s cyclists (9 males; 8 females) was basically examined am (begin times ranging from h and you may h) and left a few ladies had been tested after work (initiate times h and h). Industry trips took place from the inner metropolitan and residential district–outlying aspects of Stockholm, Sweden. A detailed description of these portion as well as their boundaries will be utilized in Wahlgren and you may Schantz . The vast majority of professionals (6 people and you may seven boys) course commuted of suburban so you’re able to internal towns (cf. Table step one).
The participants were instructed to cycle at their normal pace, and their HR was measured continuously. They were not able to drink during their cycle commute. The mean values of the lowest, middle and highest fifth of heart rates during each participants? cycle commuting were used to estimate the corresponding level of VO2 based on the HR-VO2 regression equations from the laboratory. These heart rate segments were determined through ordering all heart rates from the lowest to the highest, and then dividing them into segments of 1/5 of all heart rates. In each of these segments, the heart rates were normally distributed.
This new undertaking period of the period travels are synchronized for the second investigator prepared in the interest, as well as on arrival the entire trip go out is indexed. The players have been requested to ensure whether or not its drawn routes towards charts had been drawn completely, assuming maybe not, people departure regarding the to start with designated station is actually put into the fresh map. The entire bicycling acceleration are calculated based on the route distances counted for the standard approach additionally the excursion big date (cf. Desk step 1).
Mathematical analyses
Sheer and you can % differences when considering communities about pre-aspect methodological education was basically reviewed with Student’s matched up t-assessment and another-attempt http://datingranking.net/cs/telegraph-dating-recenze t-assessment, correspondingly.
The reproducibility of the paired individual data for VO2 and HR between test and retest in the laboratory was calculated as absolute and relative differences, and analyzed with Student?s paired t-test as well as coefficient of variation (CV). The CV was calculated by dividing the standard deviation of the difference between the test–retest values by v2. This value (typical error) was then divided with the average of the test–retest values and multiplied by 100 .
The HR-VO2 relations based on each individual?s paired VO2 and HR from three submaximal work rates (model 1) plus a maximal work rate (model 2), at test and retest were described by linear regression analyses and correlation coefficients (r-values). The absolute differences in y-intercepts, slopes and r-values between test and retest were evaluated with paired Student?s t-test for each model. The absolute values for the y-intercepts, slopes and r-values at test and retest were also compared between model 1 and 2 with paired Student?s t-test, and the 95% confidence intervals for the mean values were calculated.
The reproducibility of the estimated VO2, based on the regression equations from test and retest, and calculated on the basis of three levels of HR from each individual?s cycle commuting, is presented in absolute figures and absolute as well as relative differences. They were analyzed for all individuals with Student?s paired t-test, the 95% confidence intervals for the mean values and coefficient of variation (CV).
Whether the levels of estimated VO2 at test and retest, as well as the differences between test and retest, were altered between model 1 and 2 were also evaluated with Student?s paired t-test and 95% confidence intervals for the mean values. Bland-Altman plots with 95% limits of agreement in individual absolute values of estimated VO2 were graphically displayed .