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David R. Paul, Ryan McGrath, Chantal A. Vella, Matthew Kramer, David J. Baer and Alanna J. Moshfegh

visit), participants provided a final urine specimen, were measured for resting energy expenditure (REE) via indirect calorimetry, 29 and returned the accelerometer. Measurement of TEE and MVPA via PAQ The NHANES PAQ (2001–2002 version) queries participants about their physical activities from the

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Francisco J. Amaro-Gahete, Lucas Jurado-Fasoli, Alejandro R. Triviño, Guillermo Sanchez-Delgado, Alejandro De-la-O, Jørn W. Helge and Jonatan R. Ruiz

morning type). The resting metabolic rate was measured by indirect calorimetry during 15 minutes in peaceful and relaxing room (temperature: 22.6 [0.7]°C; humidity: 44.5% [6.1%]). After that, a maximal walking speed protocol on a treadmill (H/P/cosmos pulsar; H/P/Cosmos Sports & Medical GmbH, Nußdorf

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Stacy N. Scott, Cary M. Springer, Jennifer F. Oody, Michael S. McClanahan, Brittany D. Wiseman, Tyler J. Kybartas and Dawn P. Coe

) found that VO 2 peak estimated by the PACER test tended to be overestimated in less fit participants and underestimated in more fit participants compared with VO 2 peak measured with indirect calorimetry. In addition, weight status can impact VO 2 peak prediction. Previous research has shown that the

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James E. Peterman, Kalee L. Morris, Rodger Kram and William C. Byrnes

) until volitional fatigue was reached. During the exercise test, respiratory gas exchange and energy expenditure were measured using a computerized indirect calorimetry system (TrueOne 2400; ParvoMedics, Sandy, UT). Heart rate was measured using radio telemetry (Polar ® , Kempele, Finland) that was

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Greg Petrucci Jr., Patty Freedson, Brittany Masteller, Melanna Cox, John Staudenmayer and John Sirard

-structured lab protocol examining the validity of five wrist-worn consumer activity trackers the MS demonstrated the lowest accuracy and precision for estimated kCals, compared with indirect calorimetry ( Bai et al., 2016 ). This laboratory protocol consisted of three sessions: 1) 20 minutes of sedentary

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Kyle L. Timmerman, Kevin D. Ballard, Michael A. Deal, Lisa C. Tagariello, Jenna M. Karrow, Gabrielle A. Volk, Adam Meisler, Ian D. Connors and Rachael E. Mott

determined by indirect calorimetry. 29 Blood Sampling and Analysis Whole blood (10 mL) was collected from an antecubital vein into a serum separator tube after 15 minutes of quiet seated rest. The tube was allowed to clot for 30 minutes at 4°C and then centrifuged (3000 revolutions per minute, 20 min, 4°C

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Alyssa Evans, Gavin Q. Collins, Parker G. Rosquist, Noelle J. Tuttle, Steven J. Morrin, James B. Tracy, A. Jake Merrell, William F. Christensen, David T. Fullwood, Anton E. Bowden and Matthew K. Seeley

Gear, and Apple Watch) to accurately estimate energy expenditure is low enough to have negative implications for people who desire to use the wearables to lose body weight ( Shcherbina et al., 2017 ; Wallen, Gomersall, Keating, Wisløff, Coombes, 2016 ). Indirect calorimetry can be used to accurately

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Edward A. Gray, Thomas A. Green, James A. Betts and Javier T. Gonzalez

calorimetry equations of Jeukendrup and Wallis ( 2005 ). Statistical Analysis A priori sample size was calculated using the running capacity data ( d  = 1.84) from Maunder et al. ( 2018 ). N  = 5 would provide 95% statistical power with α = .05. Therefore, eight participants were recruited in each experiment

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Monica Klungland Torstveit, Ida Fahrenholtz, Thomas B. Stenqvist, Øystein Sylta and Anna Melin

deficit Benardot ( 2007 ) Benardot ( 2013 ) Components of RMR ratio  mRMR Calorimetry using a ventilated canopy hood system (Oxycon Pro; Jaeger GmbH, Hoechberg, Germany) Calibrated before each test according to standards Oxygen consumption and carbon dioxide production were assessed over a 30-min period A

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Philip von Rosen and Maria Hagströmer

participants with illness may receive lower time in activities with higher intensities relative to time in activities with lighter intensities, compared with younger and healthier participants. Other measures of physical activity, such as indirect calorimetry, doubly labeled water, direct observation, and so