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R. Brychta · SciRah

Researcher profile · Semantic Scholar

R. Brychta

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R. Brychta — researcher profile on SciRah

h-index: 44
Works: 117
Citations: 11K

Most-cited papers

Evolution of accelerometer methods for physical activity research
R. Troiano, J. Mcclain, R. Brychta, Kong Y. Chen
2014British Journal of Sports Medicine950 citations Open access
Semantic Scholar
Ultra-Processed Diets Cause Excess Calorie Intake and Weight Gain: An Inpatient Randomized Controlled Trial of Ad Libitum Food Intake
K. Hall, Alexis Ayuketah, R. Brychta, Hong-Yi Cai +21 more
2019Cell Metabolism921 citations Open access
Semantic Scholar
Ultra-processed diets cause excess calorie intake and weight gain: An inpatient randomized controlled trial of ad libitum food intake
K. Hall, Alexis Ayuketah, R. Brychta, Hong-Yi Cai +21 more
2019Cell Metabolism891 citations Open access
Semantic Scholar
Irisin and FGF21 are cold-induced endocrine activators of brown fat function in humans
P. Lee, J. Linderman, Sheila Smith, R. Brychta +10 more
2014Cell Metabolism785 citations Open access
Semantic Scholar
Persistent metabolic adaptation 6 years after The Biggest Loser competition
E. Fothergill, Ju-En Guo, Lilian Howard, Jennifer C. Kerns +7 more
2016Obesity614 citations Open access
Semantic Scholar
Sedentary Activity Associated With Metabolic Syndrome Independent of Physical Activity
Andrea J Bankoski, T. Harris, J. Mcclain, R. Brychta +5 more
2011Diabetes Care502 citations Open access
Semantic Scholar
Mapping of human brown adipose tissue in lean and obese young men
Brooks P. Leitner, Shan Huang, R. Brychta, Courtney J Duckworth +10 more
2017Proceedings of the National Academy of Sciences of the United States of America453 citations Open access
Semantic Scholar
Temperature-Acclimated Brown Adipose Tissue Modulates Insulin Sensitivity in Humans
P. Lee, Sheila Smith, J. Linderman, A. Courville +5 more
2014Diabetes389 citations Open access
Semantic Scholar
Association of Sedentary Time with Mortality Independent of Moderate to Vigorous Physical Activity
A. Koster, P. Caserotti, K. Patel, C. Matthews +5 more
2012PLoS ONE333 citations Open access
Semantic Scholar
Chronic mirabegron treatment increases human brown fat, HDL cholesterol, and insulin sensitivity.
A. O'Mara, James W. Johnson, J. Linderman, R. Brychta +23 more
2020Journal of Clinical Investigation311 citations Open access
Semantic Scholar
Accelerometer-measured dose-response for physical activity, sedentary time, and mortality in US adults.
C. Matthews, S. Keadle, R. Troiano, L. Kahle +7 more
2016American Journal of Clinical Nutrition278 citations Open access
Semantic Scholar
Calorie for calorie, dietary fat restriction results in more body fat loss than carbohydrate restriction in people with obesity
K. Hall, Thomas Bemis, R. Brychta, Kong Y. Chen +13 more
2015Cell Metabolism271 citations Open access
Semantic Scholar
Effect of a plant-based, low-fat diet versus an animal-based, ketogenic diet on ad libitum energy intake
K. Hall, Ju-En Guo, A. Courville, J. Boring +19 more
2021Nature Medicine208 citations Open access
Semantic Scholar
RE-DEFINING THE ROLES OF SENSORS IN OBJECTIVE PHYSICAL ACTIVITY MONITORING
Kong Y. Chen, K. Janz, Wei-Mo Zhu, R. Brychta
2012Medicine & Science in Sports & Exercise191 citations Open access
Semantic Scholar
Employment and Physical Activity in the U.S.
D. V. Van Domelen, A. Koster, P. Caserotti, R. Brychta +5 more
2011American Journal of Preventive Medicine181 citations Open access
Semantic Scholar
Objective measurements of daily physical activity patterns and sedentary behaviour in older adults: Age, Gene/Environment Susceptibility-Reykjavik Study.
N. Arnardottir, A. Koster, D. V. Van Domelen, R. Brychta +9 more
2013Age and Ageing172 citations Open access
Semantic Scholar
RM-493, a melanocortin-4 receptor (MC4R) agonist, increases resting energy expenditure in obese individuals.
Kong Y. Chen, R. Muniyappa, Brent S. Abel, Katherine P. Mullins +11 more
2015Journal of Clinical Endocrinology and Metabolism161 citations Open access
Semantic Scholar
Brown fat activation mediates cold-induced thermogenesis in adult humans in response to a mild decrease in ambient temperature.
Kong Y. Chen, R. Brychta, J. Linderman, Sheila Smith +7 more
2013Journal of Clinical Endocrinology and Metabolism158 citations Open access
Semantic Scholar
Regulation of Human Adipose Tissue Activation, Gallbladder Size, and Bile Acid Metabolism by a β3-Adrenergic Receptor Agonist
Alison S. Baskin, J. Linderman, R. Brychta, Suzanne McGehee +21 more
2018Diabetes140 citations Open access
Semantic Scholar
Mild cold exposure modulates fibroblast growth factor 21 (FGF21) diurnal rhythm in humans: relationship between FGF21 levels, lipolysis, and cold-induced thermogenesis.
P. Lee, R. Brychta, J. Linderman, Sheila Smith +2 more
2013Journal of Clinical Endocrinology and Metabolism135 citations Open access
Semantic Scholar
Deep phenotyping of post-infectious myalgic encephalomyelitis/chronic fatigue syndrome
B. Walitt, Komudi Singh, Samuel Lamunion, M. Hallett +66 more
2024Nature Communications119 citations Open access
Semantic Scholar
Ability of Thigh-Worn ActiGraph and activPAL Monitors to Classify Posture and Motion
J. Steeves, H. Bowles, J. Mcclain, K. Dodd +3 more
2015Medicine & Science in Sports & Exercise116 citations Open access
Semantic Scholar
Ultra-Processed Diets Cause Excess Calorie Intake and Weight Gain: An Inpatient Randomized Controlled Trial of Ad Libitum Food Intake.
Kevin D. Hall, Alexis Ayuketah, R. Brychta, Hongyi Cai +21 more
2020Cell Metabolism107 citations Open access
Semantic Scholar
Less screen time and more frequent vigorous physical activity is associated with lower risk of reporting negative mental health symptoms among Icelandic adolescents
Soffia M. Hrafnkelsdottir, R. Brychta, Vaka Rognvaldsdottir, Sunna Gestsdottir +4 more
2018PLoS ONE107 citations Open access
Semantic Scholar
Opportunities and challenges in the therapeutic activation of human energy expenditure and thermogenesis to manage obesity
Kong Y. Chen, R. Brychta, Zahraa Abdul Sater, Thomas M Cassimatis +9 more
2019Journal of Biological Chemistry98 citations Open access
Semantic Scholar
Moderate Weight Loss Is Sufficient to Affect Thyroid Hormone Homeostasis and Inhibit Its Peripheral Conversion
Ritesh Agnihothri, A. Courville, J. Linderman, Sheila Smith +5 more
2014Thyroid87 citations Open access
Semantic Scholar
Comparison of Summer and Winter Objectively Measured Physical Activity and Sedentary Behavior in Older Adults: Age, Gene/Environment Susceptibility Reykjavik Study
N. Arnardottir, Nina Dora Oskarsdottir, R. Brychta, A. Koster +10 more
2017International Journal of Environmental Research and Public Health81 citations Open access
Semantic Scholar
Association of change in brain structure to objectively measured physical activity and sedentary behavior in older adults: Age, Gene/Environment Susceptibility-Reykjavik Study
N. Arnardottir, A. Koster, D. V. Van Domelen, R. Brychta +10 more
2015Behavioural Brain Research75 citations Open access
Semantic Scholar
Effects of Interrupting Children's Sedentary Behaviors With Activity on Metabolic Function: A Randomized Trial.
B. Belcher, D. Berrigan, Alexia Papachristopoulou, Sheila M. Brady +11 more
2015Journal of Clinical Endocrinology and Metabolism75 citations Open access
Semantic Scholar
Room Indirect Calorimetry Operating and Reporting Standards (RICORS 1.0)
Kong Y. Chen, Steven R. Smith, E. Ravussin, J. Krakoff +10 more
2020Obesity74 citations Open access
Semantic Scholar
Cold-activated brown adipose tissue is an independent predictor of higher bone mineral density in women
Paul R. Lee, R. Brychta, Michael T. Collins, J. Linderman +5 more
2012Osteoporosis International68 citations Open access
Semantic Scholar
The Thr92Ala 5′ Type 2 Deiodinase Gene Polymorphism Is Associated with a Delayed Triiodothyronine Secretion in Response to the Thyrotropin-Releasing Hormone–Stimulation Test: A Pharmacogenomic Study
Peter W. Butler, Sheila Smith, J. Linderman, R. Brychta +8 more
2010Thyroid65 citations Open access
Semantic Scholar
Fibroblast growth factor 21 (FGF21) and bone: is there a relationship in humans?
Paul R. Lee, J. Linderman, Sheila Smith, R. Brychta +5 more
2013Osteoporosis International59 citations Open access
Semantic Scholar
Self-reported adherence to the physical activity recommendation and determinants of misperception in older adults
M. Visser, R. Brychta, Kong Y. Chen, A. Koster
2013Journal of Aging and Physical Activity53 citations Open access
Semantic Scholar
Associations of Sleep Patterns with Metabolic Syndrome Indices, Body Composition, and Energy Intake in Children and Adolescents
Sarah J Mi, N. Kelly, R. Brychta, A. C. Grammer +11 more
2019Pediatric obesity49 citations Open access
Semantic Scholar
Midlife Determinants Associated with Sedentary Behavior in Old Age
J. D. van der Berg, H. Bosma, P. Caserotti, G. Eiriksdottir +12 more
2014Medicine & Science in Sports & Exercise48 citations Open access
Semantic Scholar
Does Visceral Fat Estimated by Dual-Energy X-ray Absorptiometry Independently Predict Cardiometabolic Risks in Adults?
H. Sasai, R. Brychta, Rachel P. Wood, M. Rothney +3 more
2015Journal of Diabetes Science and Technology45 citations Open access
Semantic Scholar
VAGAL AND SYMPATHETIC FUNCTION IN NEUROPATHIC POTS
G. Jacob, Laura Diedrich, Kyoko Sato, R. Brychta +4 more
2019HYPERTENSION42 citations Open access
Semantic Scholar
Sexual Dimorphisms in Adult Human Brown Adipose Tissue
Laura A. Fletcher, Katherine Kim, Brooks P. Leitner, Thomas M Cassimatis +7 more
2020Obesity40 citations Open access
Semantic Scholar
Effects of Interrupting Sedentary Behavior With Short Bouts of Moderate Physical Activity on Glucose Tolerance in Children With Overweight and Obesity: A Randomized Crossover Trial
Miranda M Broadney, B. Belcher, D. Berrigan, R. Brychta +14 more
2018Diabetes Care40 citations Open access
Semantic Scholar
Increased physical activity was associated with less weight regain six years after “The Biggest Loser” competition
Jennifer C. Kerns, Ju-En Guo, E. Fothergill, Lilian Howard +6 more
2017Obesity39 citations Open access
Semantic Scholar
Reduced insulin sensitivity in adults with pseudohypoparathyroidism type 1a.
R. Muniyappa, M. Warren, Xiong-ce Zhao, Sara C Aney +6 more
2013Journal of Clinical Endocrinology and Metabolism39 citations Open access
Semantic Scholar
Quantification of the capacity for cold-induced thermogenesis in young men with and without obesity.
R. Brychta, Shan Huang, Juan Wang, Brooks P. Leitner +12 more
2019Journal of Clinical Endocrinology and Metabolism38 citations Open access
Semantic Scholar
Comparing ActiGraph equations for estimating energy expenditure in older adults
Nicolás Aguilar-Farías, G. Peeters, R. Brychta, Kong Y. Chen +1 more
2018Jurnal sport science37 citations Open access
Semantic Scholar
Less screen time and more physical activity is associated with more stable sleep patterns among Icelandic adolescents
Soffia M. Hrafnkelsdottir, R. Brychta, Vaka Rognvaldsdottir, Kong Y. Chen +3 more
2020Sleep Health30 citations Open access
Semantic Scholar
Postprandial plasma lipidomics reveal specific alteration of hepatic-derived diacylglycerols in non-alcoholic fatty liver disease
T. Velenosi, Gil Ben-Yakov, Maren C. Podszun, J. Hercun +17 more
2022Gastroenterology27 citations Open access
Semantic Scholar
Influence of Day Length and Physical Activity on Sleep Patterns in Older Icelandic Men and Women
R. Brychta, N. Arnardottir, E. Johannsson, E. Wright +9 more
2016Journal of Clinical Sleep Medicine (JCSM)27 citations Open access
Semantic Scholar
Sleep deficiency on school days in Icelandic youth, as assessed by wrist accelerometry
Vaka Rognvaldsdottir, S. Gudmundsdottir, R. Brychta, Soffia M. Hrafnkelsdottir +4 more
2017Sleep Medicine26 citations Open access
Semantic Scholar
The thermoneutral zone in women takes an “arctic” shift compared to men
R. Brychta, Suzanne McGehee, Shan Huang, Brooks P. Leitner +17 more
2024Proceedings of the National Academy of Sciences of the United States of America23 citations
Semantic Scholar
Physical Activity Levels (PAL) in United States Adults – 2019
C. Matthews, Shreya Patel, Pedro F. Saint-Maurice, E. Loftfield +5 more
2022Medicine & Science in Sports & Exercise23 citations
Semantic Scholar

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