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Diego Augusto Santos Silva, Katie E. Gunnell and Mark Stephen Tremblay

making it difficult to quantify time spent using screens. Although researchers have objectively measured sedentary behaviors through instruments that assess daily energy expenditure (eg, accelerometers and indirect calorimetry), 5 these objective measures are relatively expensive and do not provide

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Mallory S. Kobak, Andrew Lepp, Michael J. Rebold, Hannah Faulkner, Shannon Martin and Jacob E. Barkley

of individuals, Lepp et al ( 24 ) demonstrated an inverse relationship between cell phone use and cardiorespiratory fitness by indirect calorimetry. In the same study, high-frequency cell phone users reported greater participation in sedentary activities and fewer physical activities than their low

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Whitney A. Welch, Scott J. Strath, Michael Brondino, Renee Walker and Ann M. Swartz

simulate 1 day; however, continuous energy expenditure measurement with indirect calorimetry limited our measurement time. Future work could expand upon these findings by examining additive or sustained effects of LPA throughout a day. Another limitation to this study was the use of a controlled laboratory

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George Wilson, Dan Martin, James P. Morton and Graeme L. Close

measurements were performed within 12 min. Jockeys were then required to have RMR measured in a supine position using indirect calorimetry (Metalyser, Thatcham, UK). Jockeys were required to lie down for an initial 15 min before testing to allow for the dissipation of movement from the dual-energy X

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Luana T. Rossato, Camila T.M. Fernandes, Públio F. Vieira, Flávia M.S. de Branco, Paula C. Nahas, Guilherme M. Puga and Erick P. de Oliveira

the incomplete stage, T was the total time (s) set for the complete stage (in this case, 120 s) and increment of speed of 1.0 km·h −1 per stage. VO 2 max was determined during the incremental test using indirect calorimetry equipment (Quark; Cosmed, Rome, Italy), which was calibrated prior to each

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Ralph Beneke, Tobias G.J. Weber and Renate M. Leithäuser

at each stage via indirect calorimetry. 30 The relCHO was calculated as the fraction (%) of the V ˙ O 2 used for CHO, with 100% reflecting a respiratory-exchange ratio ≥1.0. For the approximation of k CHO and n, the first and the final stages of the incremental load test were excluded due to

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Andreas M. Kasper, Ben Crighton, Carl Langan-Evans, Philip Riley, Asheesh Sharma, Graeme L. Close and James P. Morton

Protocol ( Nana et al., 2015 ). Resting metabolic rate was assessed via indirect calorimetry (GEM Open Circuit Indirect Calorimeter; GEMNutrition Ltd., Warrington, UK) using the protocol described by Bone and Burke ( 2018 ). Peak oxygen uptake was assessed on a motorized treadmill (h/p/cosmos; Pulsar

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Paul R. Hibbing, Samuel R. LaMunion, Haileab Hilafu and Scott E. Crouter

indirect calorimetry and posture (75 participants, 48 with data from both visits), both of the youth Sojourn models had excellent sensitivity for predicting moderate-to-vigorous PA (95.3% ± 14.3% for the hip, and 94.2% ± 5.4% for the non-dominant wrist). The non-dominant wrist also had sensitivity above 80

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Samantha F. Ehrlich, Amanda J. Casteel, Scott E. Crouter, Paul R. Hibbing, Monique M. Hedderson, Susan D. Brown, Maren Galarce, Dawn P. Coe, David R. Bassett and Assiamira Ferrara

’ R package ( Hibbing & van Hees, 2018 ). The two-regression algorithms (i.e., the Hibbing approach hereafter) were developed using the ActiGraph GT9X, with specific algorithms for right and left wrist data (raw acceleration in 1-s epochs), and validated against indirect calorimetry in healthy adults

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Jill R. Reed, Paul Estabrooks, Bunny Pozehl, Kate Heelan and Christopher Wichman

and ultra to the actical and indirect calorimetry . J Med Eng Technol . 2013 ; 37 ( 7 ): 456 – 462 . PubMed ID: 24007317 doi:10.3109/03091902.2013.831135 10.3109/03091902.2013.831135 33. Sasaki JE , Hickey A , Mavilia M , et al . Validation of the Fitbit wireless activity tracker ® for