Ability to Achieve Maximal Oxygen Consumption During Exercise Testing in Morbidly Obese Patients

2004 ◽  
Vol 36 (Supplement) ◽  
pp. S140
Author(s):  
Adam T. de Jong ◽  
Michael J. Gallagher ◽  
Keisha R. Sandberg ◽  
Kevin R. Krause ◽  
Jonathan K. Ehrman ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Exercise Testing ◽  
Maximal Oxygen Consumption ◽  
Morbidly Obese ◽  
Obese Patients

Ability to Achieve Maximal Oxygen Consumption During Exercise Testing in Morbidly Obese Patients

2004 ◽  
Vol 36 (Supplement) ◽  
pp. S140
Author(s):  
Adam T. de Jong ◽  
Michael J. Gallagher ◽  
Keisha R. Sandberg ◽  
Kevin R. Krause ◽  
Jonathan K. Ehrman ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Exercise Testing ◽  
Maximal Oxygen Consumption ◽  
Morbidly Obese ◽  
Obese Patients

The “Talk Test” is a practical tool to determine aerobic training zones in overweight and obese patients.

2020 ◽  
Author(s):  
Ignacio Orizola-Cáceres ◽  
Hugo Cerda-Kohler ◽  
Carlos Burgos-Jara ◽  
Roberto Meneses-Valdes ◽  
Rafael Gutierrez-Pino ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Power Output ◽  
Aerobic Training ◽  
Exercise Prescription ◽  
Ventilatory Threshold ◽  
Maximal Oxygen Consumption ◽  
Mean Difference ◽  
Obese Patients ◽  
Analog Scale ◽  
Practical Tool

Abstract Background: to validate the traditional talk test (TTT) and an alternative talk test (ATT; using a visual analog scale) in overweight/obese (OW-OB) patients and to establish its accuracy in determining the aerobic training zones.Methods: We recruited 19 subjects aged 34.9 ± 6.7 years, diagnosed with overweight/obesity (BMI 31.8 ± 5.7). Every subject underwent incremental cycloergometric tests for maximal oxygen consumption, and TT in a randomized order. At the end of each stage during the TT each subject read out loud a 40 words text and then had to identify the comfort to talk in two modalities: TTT which consisted in answering “Yes”, “I don’t know” or “No” to the question Was talking comfortable?, or ATT through a 1 to 10 numeric perception scale (visual scale analog: VAS). The magnitude of differences was interpreted in comparison to the smallest worthwhile change (SWC) and was used to determine agreement.Results: Agreement between the power output at the VAS 2-3 of ATT and the power output at the ventilatory threshold 1 (very likely equivalent; mean difference -1.3 W, 90 % CL (-8.2; 5.6), % chances for higher/similar/lower values of 0.7/99.1/0.2 %). Also, there was an agreement between the power output at the VAS 6-7 of ATT and the power output at the ventilatory threshold 2 (very likely equivalent; mean difference 11.1 W, 90 % CL (2.8; 19.2), % chances for higher/similar/lower values of 0.0/97.6/2.4 %). Conclusions: ATT is a tool to determine exercise intensity and to establish aerobic training zones for exercise prescription in OW-OB patients.

scholarly journals Modified Talk Test: A randomised cross-over trial investigating the comparative utility of two “Talk Test” for determining aerobic training zones in overweight and obese patients

2020 ◽  
Author(s):  
Ignacio Orizola-Cáceres ◽  
Hugo Cerda-Kohler ◽  
Carlos Burgos-Jara ◽  
Roberto Meneses-Valdes ◽  
Rafael Gutierrez-Pino ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Power Output ◽  
Confidence Limit ◽  
Aerobic Training ◽  
Exercise Prescription ◽  
Ventilatory Threshold ◽  
Maximal Oxygen Consumption ◽  
Mean Difference ◽  
Obese Patients ◽  
Analog Scale

Abstract Background: to validate the traditional talk test (TTT) and an alternative talk test (ATT; using a visual analog scale) in overweight/obese (OW-OB) patients and to establish its accuracy in determining the aerobic training zones.Methods: We recruited 19 subjects aged 34.9 ± 6.7 years, diagnosed with overweight/obesity (BMI 31.8 ± 5.7). Every subject underwent incremental cycloergometric tests for maximal oxygen consumption, and TTT in a randomized order. At the end of each stage during the TTT each subject read out loud a 40 words text and then had to identify the comfort to talk in two modalities: TTT which consisted in answering “Yes”, “I don’t know” or “No” to the question Was talking comfortable?, or ATT through a 1 to 10 numeric perception scale (visual scale analog: VAS). The magnitude of differences was interpreted in comparison to the smallest worthwhile change and was used to determine agreement.Results: Agreement between the power output at the VAS 2-3 of ATT and the power output at the ventilatory threshold 1 (VT1) (very likely equivalent; mean difference -1.3 Watts (W), 90 % confidence limit (CL) (-8.2; 5.6), % chances for higher/similar/lower values of 0.7/99.1/0.2 %). Also, there was an agreement between the power output at the VAS 6-7 of ATT and the power output at the ventilatory threshold 2 (VT2) (very likely equivalent; mean difference 11.1 W, 90 % CL (2.8; 19.2), % chances for higher/similar/lower values of 0.0/97.6/2.4 %). Conclusions: ATT is a tool to determine exercise intensity and to establish aerobic training zones for exercise prescription in OW-OB patients.

Stress Testing Protocols

2018 ◽  
pp. 135-148
Author(s):  
Gregory S. Thomas ◽  
Myrvin H. Ellestad
Keyword(s):  
Oxygen Consumption ◽  
Exercise Testing ◽  
Mental Stress ◽  
Stress Testing ◽  
Intermittent Exercise ◽  
Maximal Oxygen Consumption ◽  
Peak Exercise ◽  
Bicycle Ergometry ◽  
Submaximal Effort ◽  
Testing Protocols

The chapter Exercise Testing Protocols compares the types of protocols available. Historically, exercise testing began with protocols eliciting a submaximal effort. With time, other protocols were developed including intermittent exercise with rest between exercise stages, a ramp protocol with gradually increasing stages, bicycle ergometry, isometric testing and mental stress testing. Given their ability to measure or estimate maximal oxygen consumption (V̇02max) and assess myocardial ischemia during and a peak exercise, maximal treadmill exercise protocols became the most popular. Most commonly used have been those of Bruce, Ellestad, Balke and Ware, Astrand, and Cornell. All successfully achieve maximal workload in a predictable manner.

Equations to predict maximal oxygen consumption during cardiopulmonary exercise testing in healthy Thai adults

2018 ◽  
Vol 177 (3) ◽  
Author(s):  
Tichanon Promsrisuk ◽  
Wilaiwan Khrisanapant ◽  
Orapin Pasurivong ◽  
Watchara Boonsawat ◽  
Boonsong Patjanasoontorn ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Exercise Testing ◽  
Maximal Oxygen Consumption ◽  
Cardiopulmonary Exercise Testing ◽  
Cardiopulmonary Exercise

Hemodynamic and metabolic responses to self-paced and ramp-graded exercise testing protocols

2018 ◽  
Vol 43 (6) ◽  
pp. 609-616 ◽  
Author(s):  
Nicholas M. Beltz ◽  
Fabiano T. Amorim ◽  
Ann L. Gibson ◽  
Jeffrey M. Janot ◽  
Len Kravitz ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Oxygen Consumption ◽  
Oxygen Uptake ◽  
Exercise Testing ◽  
Ventilatory Threshold ◽  
Maximal Oxygen Consumption ◽  
Oxygen Uptake Kinetics ◽  
Metabolic Responses ◽  
Graded Exercise Testing ◽  
Graded Exercise

Recent examinations have shown lower maximal oxygen consumption during traditional ramp (RAMP) compared with self-paced (SPV) graded exercise testing (GXT) attributed to differences in cardiac output. The current study examined the differences in hemodynamic and metabolic responses between RAMP and SPV during treadmill exercise. Sixteen recreationally trained men (aged23.7 ± 3.0 years) completed 2 separate treadmill GXT protocols. SPV consisted of five 2-min stages (10 min total) of increasing speed clamped by the Borg RPE6-20 scale. RAMP increased speed by 0.16 km/h every 15 s until volitional exhaustion. All testing was performed at 3% incline. Oxygen consumption was measured via indirect calorimetry; hemodynamic function was measured via thoracic impedance and blood lactate (BLa−) was measured via portable lactate analyzer. Differences between SPV and RAMP protocols were analyzed as group means by using paired-samples t tests (R Core Team 2017). Maximal values for SPV and RAMP were similar (p > 0.05) for oxygen uptake (47.1 ± 3.4 vs. 47.4 ± 3.4 mL·kg−1·min−1), heart rate (198 ± 5 vs. 200 ± 6 beats·min−1), ventilation (158.8 ± 20.7 vs. 159.3 ± 19.0 L·min−1), cardiac output (26.9 ± 5.5 vs. 27.9 ± 4.2 L·min−1), stroke volume (SV) (145.9 ± 29.2 vs. 149.8 ± 25.3 mL·beat−1), arteriovenous oxygen difference (18.5 ± 3.1 vs. 19.7 ± 3.1 mL·dL−1), ventilatory threshold (VT) (78.2 ± 7.2 vs. 79.0% ± 7.6%), and peak BLa− (11.7 ± 2.3 vs. 11.5 ± 2.4 mmol·L−1), respectively. In conclusion, SPV elicits similar maximal hemodynamic responses in comparison to RAMP; however, SV kinetics exhibited unique characteristics based on protocol. These results support SPV as a feasible GXT protocol to identify useful fitness parameters (maximal oxygen uptake, oxygen uptake kinetics, and VT).

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