Resultats de la cerca - Vadim Zipunnikov

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  1. 1
    Population Value Decomposition, a Framework for the Analysis of Image Populations

    Population Value Decomposition, a Framework for the Analysis of Image Populations per Ciprian M. Crainiceanu, Brian Caffo, Sheng Luo, Vadim Zipunnikov, Naresh M. Punjabi

    Publicat 2011
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  2. 2
    Rising Energetic Cost of Walking Predicts Gait Speed Decline With Aging

    Rising Energetic Cost of Walking Predicts Gait Speed Decline With Aging per Jennifer A. Schrack, Vadim Zipunnikov, Eleanor M. Simonsick, Stephanie A. Studenski, Luigi Ferrucci

    Publicat 2016
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  3. 3
    Epidemiology of objectively measured bedtime and chronotype in US adolescents and adults: NHANES 2003–2006

    Epidemiology of objectively measured bedtime and chronotype in US adolescents and adults: NHANES 2003–2006 per Jacek Urbanek, Adam P. Spira, Junrui Di, Andrew Leroux, Ciprian Crainiceanu, Vadim Zipunnikov

    Publicat 2017
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  4. 4
    Multilevel Functional Principal Component Analysis for High-Dimensional Data

    Multilevel Functional Principal Component Analysis for High-Dimensional Data per Vadim Zipunnikov, Brian Caffo, David M. Yousem, Christos Davatzikos, Brian S. Schwartz, Ciprian M. Crainiceanu

    Publicat 2011
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  5. 5
    Quantifying the lifetime circadian rhythm of physical activity: a covariate-dependent functional approach

    Quantifying the lifetime circadian rhythm of physical activity: a covariate-dependent functional approach per Luo Xiao, Lei Huang, Jennifer A. Schrack, Luigi Ferrucci, Vadim Zipunnikov, Ciprian M. Crainiceanu

    Publicat 2014
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  6. 6
    Validation of Gait Characteristics Extracted From Raw Accelerometry During Walking Against Measures of Physical Function, Mobility, Fatigability, and Fitness

    Validation of Gait Characteristics Extracted From Raw Accelerometry During Walking Against Measures of Physical Function, Mobility, Fatigability, and Fitness per Jacek Urbanek, Vadim Zipunnikov, Tamara Harris, Ciprian M. Crainiceanu, Jaroslaw Harezlak, Nancy W. Glynn

    Publicat 2017
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  7. 7
    The Predictive Performance of Objective Measures of Physical Activity Derived From Accelerometry Data for 5-Year All-Cause Mortality in Older Adults: National Health and Nutritional Examination Survey 2003–2006

    The Predictive Performance of Objective Measures of Physical Activity Derived From Accelerometry Data for 5-Year All-Cause Mortality in Older Adults: National Health and Nutritiona... per Ekaterina Smirnova, Andrew Leroux, Quy Cao, Lucia Tabacu, Vadim Zipunnikov, Ciprian Crainiceanu, Jacek Urbanek

    Publicat 2019
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  8. 8
    Estimating Energy Expenditure from Heart Rate in Older Adults: A Case for Calibration

    Estimating Energy Expenditure from Heart Rate in Older Adults: A Case for Calibration per Jennifer A. Schrack, Vadim Zipunnikov, Jeff Goldsmith, Karen Bandeen‐Roche, Ciprian M. Crainiceanu, Luigi Ferrucci

    Publicat 2014
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  9. 9
    Re-evaluating the effect of age on physical activity over the lifespan

    Re-evaluating the effect of age on physical activity over the lifespan per Vijay R. Varma, Debangan Dey, Andrew Leroux, Junrui Di, Jacek Urbanek, Luo Xiao, Vadim Zipunnikov

    Publicat 2017
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  10. 10
    Association between Objectively Measured Physical Activity and Mortality in NHANES

    Association between Objectively Measured Physical Activity and Mortality in NHANES per Ezra Fishman, Jeremy A. Steeves, Vadim Zipunnikov, Annemarie Koster, David Berrigan, Tamara Harris, Rachel A. Murphy

    Publicat 2016
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  11. 11
    Patterns of sedentary and active time accumulation are associated with mortality in US adults: The NHANES study

    Patterns of sedentary and active time accumulation are associated with mortality in US adults: The NHANES study per Junrui Di, Andrew Leroux, Jacek Urbanek, Ravi Varadhan, Adam P. Spira, Jennifer A. Schrack, Vadim Zipunnikov

    Publicat 2017
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  12. 12
    Mood reactivity and affective dynamics in mood and anxiety disorders.

    Mood reactivity and affective dynamics in mood and anxiety disorders. per Femke Lamers, Joël Swendsen, Lihong Cui, Mathilde M. Husky, Jordan Johns, Vadim Zipunnikov, Kathleen R. Merikangas

    Publicat 2018
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  13. 13
    Assessing the "Physical Cliff": Detailed Quantification of Age-Related Differences in Daily Patterns of Physical Activity

    Assessing the "Physical Cliff": Detailed Quantification of Age-Related Differences in Daily Patterns of Physical Activity per Jennifer A. Schrack, Vadim Zipunnikov, Jeff Goldsmith, Jiawei Bai, Eleanor M. Simonsick, Ciprian M. Crainiceanu, Luigi Ferrucci

    Publicat 2013
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  14. 14
    Perceived Fatigability and Objective Physical Activity in Mid- to Late-Life

    Perceived Fatigability and Objective Physical Activity in Mid- to Late-Life per Amal A. Wanigatunga, Eleanor M. Simonsick, Vadim Zipunnikov, Adam P. Spira, Stephanie A. Studenski, Luigi Ferrucci, Jennifer A. Schrack

    Publicat 2017
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  15. 15
    Fatigability and endurance performance in cancer survivors: Analyses from the Baltimore Longitudinal Study of Aging

    Fatigability and endurance performance in cancer survivors: Analyses from the Baltimore Longitudinal Study of Aging per Gillian Gresham, Sydney M. Dy, Vadim Zipunnikov, Ilene Browner, Stephanie A. Studenski, Eleanor M. Simonsick, Luigi Ferrucci, Jennifer A. Schrack

    Publicat 2018
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  16. 16
    Accelerometry Data in Health Research: Challenges and Opportunities

    Accelerometry Data in Health Research: Challenges and Opportunities per Marta Karas, Jiawei Bai, Marcin Strączkiewicz, Jaroslaw Harezlak, Nancy W. Glynn, Tamara Harris, Vadim Zipunnikov, Ciprian M. Crainiceanu, Jacek Urbanek

    Publicat 2019
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  17. 17
    Association of Total Daily Physical Activity and Fragmented Physical Activity With Mortality in Older Adults

    Association of Total Daily Physical Activity and Fragmented Physical Activity With Mortality in Older Adults per Amal A. Wanigatunga, Junrui Di, Vadim Zipunnikov, Jacek Urbanek, Pei-Lun Kuo, Eleanor M. Simonsick, Luigi Ferrucci, Jennifer A. Schrack

    Publicat 2019
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  18. 18
    Quantifying the reliability of image replication studies: The image intraclass correlation coefficient (I2C2)

    Quantifying the reliability of image replication studies: The image intraclass correlation coefficient (I2C2) per Haochang Shou, Ani Eloyan, Seonjoo Lee, Vadim Zipunnikov, Adina Crainiceanu, Mary Beth Nebel, Brian Caffo, Martin A. Lindquist, Ciprian M. Crainiceanu

    Publicat 2013
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  19. 19
    Using Heart Rate and Accelerometry to Define Quantity and Intensity of Physical Activity in Older Adults

    Using Heart Rate and Accelerometry to Define Quantity and Intensity of Physical Activity in Older Adults per Jennifer A. Schrack, Andrew Leroux, Jerome L. Fleg, Vadim Zipunnikov, Eleanor M. Simonsick, Stephanie A. Studenski, Ciprian M. Crainiceanu, Luigi Ferrucci

    Publicat 2018
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  20. 20
    Active-to-Sedentary Behavior Transitions, Fatigability, and Physical Functioning in Older Adults

    Active-to-Sedentary Behavior Transitions, Fatigability, and Physical Functioning in Older Adults per Jennifer A. Schrack, Pei-Lun Kuo, Amal A. Wanigatunga, Junrui Di, Eleanor M. Simonsick, Adam P. Spira, Luigi Ferrucci, Vadim Zipunnikov

    Publicat 2018
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