Supplementary data for study: A reappraisal of ventilatory thresholds in wheelchair athletes - do they really exist?
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'The ventilatory threshold (VT) separates low- from moderate-intensity exercise, the respiratory compensation threshold (RCT) moderate- from high-intensity exercise. Both concepts assume breakpoints in respiratory data. However, the objective determination of VT and the RCT using breakpoint models during upper-body modality exercise in wheelchair athletes has received little attention. Therefore, the aim of this study was to compare the fit of breakpoint models (i.e. two linear regression lines) with continuous no-breakpoint models (i.e. exponential curve/ 2nd order polynomial) to respiratory data obtained during a graded exercise test to exhaustion. These fits were compared employing adjusted R2 and blocked bootstrapping was used to derive estimates of a median and 95% confidence intervals (CI). V̇O2-V̇CO2 and V̇E/V̇O2-time data were as' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["breakpoints","gas exchange thresholds","respiratory thresholds"]} <|eot_id|>
 Here is the Description of a dataset. Description:'The ventilatory threshold (VT) separates low- from moderate-intensity exercise, the respiratory compensation threshold (RCT) moderate- from high-intensity exercise. Both concepts assume breakpoints in respiratory data. However, the objective determination of VT and the RCT using breakpoint models during upper-body modality exercise in wheelchair athletes has received little attention. Therefore, the aim of this study was to compare the fit of breakpoint models (i.e. two linear regression lines) with continuous no-breakpoint models (i.e. exponential curve/ 2nd order polynomial) to respiratory data obtained during a graded exercise test to exhaustion. These fits were compared employing adjusted R2 and blocked bootstrapping was used to derive estimates of a median and 95% confidence intervals (CI). V̇O2-V̇CO2 and V̇E/V̇O2-time data were as' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
The ventilatory threshold (VT) separates low- from moderate-intensity exercise, the respiratory compensation threshold (RCT) moderate- from high-intensity exercise. Both concepts assume breakpoints in respiratory data. However, the objective determination of VT and the RCT using breakpoint models during upper-body modality exercise in wheelchair athletes has received little attention. Therefore, the aim of this study was to compare the fit of breakpoint models (i.e. two linear regression lines) with continuous no-breakpoint models (i.e. exponential curve/ 2nd order polynomial) to respiratory data obtained during a graded exercise test to exhaustion. These fits were compared employing adjusted R2 and blocked bootstrapping was used to derive estimates of a median and 95% confidence intervals (CI). V̇O2-V̇CO2 and V̇E/V̇O2-time data were as
breakpoints; gas exchange thresholds; respiratory thresholds