TY  - JOUR
TI  - Measurement of Exchanging Oxygen and Carbon Dioxide and Subsequent Use of Respiratory Exchange Ratio During Exercise do not Mimic Macronutrient Contribution to Overall Energy Expenditure: Cross-Sectional Study
AB  - Objective: Physical exercise and neuromuscular characteristics are essential modulators of total energy expenditure (TEE), and oxygen and carbon dioxide gas exchange measurements and subsequent use of the respiratory exchange ratio do not fully mirror macronutrient contribution to TEE. The rationales of the study were to compare oxidative, anaerobic glycolytic, excess post-exercise oxygen consumption (EPOC), and TEE between equivalent bouts of uphill treadmill running and non-steady-state cycling using an alternative method, and to determine the relative contribution of lower extremity muscles on TEE. Material and Methods: Twenty male participants completed cardiorespiratory and isokinetic measurements over a one-week interval. Anaerobic energy expenditure was estimated from blood lactate. Results: Perceived exertion for cycling was greater than running (p=0.005). However, respiratory exchange ratio (p=0.005), heart rate (p=0.005), EPOC (p=0.001), oxidative energy expenditure (p=0.001) and TEE (p=0.001) were greater for uphill running compared to cycling. Conclusion: Due to the variations in the metabolic components, i.e., oxidative, EPOC, total energy expenditure calculated using the equations to equate work output between non-steady cycling and uphill running revealed discrepancies. Additionally, this study also revealed that compared to knee extensor and flexor muscles, hip muscles had a greater contribution to overall energy expenditure during cycling and uphill treadmill running which also enabled the participants to generate less energy cost. Per the results of the current study, it would be more accurate to use the anaerobic glycolytic energy expenditure data rather than oxygen only measures in the assessment of energy expenditure between these equivalent exercise modalities
AU  - Can, Uğur
AU  - Arınlı, Yağmur
AU  - acar, nasuh evrim
PY  - 2021
JO  - Türkiye Klinikleri Spor Bilimleri Dergisi
VL  - 13
IS  - 3
SN  - 1308-0938
SP  - 452
EP  - 460
DB  - TRDizin
UR  - http://search/yayin/detay/490680
ER  -