Results 1 to 10 of about 1,020,465 (280)

U.S. Adolescent Rest-Activity patterns: insights from functional principal component analysis (NHANES 2011–2014) [PDF]

International Journal of Behavioral Nutrition and Physical Activity, 2023
Background Suboptimal rest-activity patterns in adolescence are associated with worse health outcomes in adulthood. Understanding sociodemographic factors associated with rest-activity rhythms may help identify subgroups who may benefit from ...
Chris Ho Ching Yeung, Jiachen Lu, Erica G. Soltero, Cici Bauer, Qian Xiao   +4 more
doaj   +2 more sources

Longitudinal Viral Load Clustering for People With HIV Using Functional Principal Component Analysis [PDF]

AIDS Research and Treatment
Discussion: The findings highlight the impact of continuous clustering in understanding the distinct viral profiles of PWH and emphasize the importance of tailored treatment and insights to target interventions for all PWH.
Yunqing Ma, Xueying Yang, Jiayang Xiao, Xiaoming Li, Bankole Olatosi, Jiajia Zhang   +5 more
doaj   +2 more sources

Trajectory modeling of gestational weight: A functional principal component analysis approach. [PDF]

PLoS ONE, 2017
Suboptimal gestational weight gain (GWG), which is linked to increased risk of adverse outcomes for a pregnant woman and her infant, is prevalent. In the study of a large cohort of Canadian pregnant women, our goals are to estimate the individual weight ...
Menglu Che, Linglong Kong, Rhonda C Bell, Yan Yuan   +3 more
doaj   +2 more sources

Functional principal component analysis for identifying the child growth pattern using longitudinal birth cohort data [PDF]

BMC Medical Research Methodology, 2022
Background Longitudinal studies are important to understand patterns of growth in children and limited in India. It is important to identify an approach for characterising growth trajectories to distinguish between children who have healthy growth and ...
Reka Karuppusami, Belavendra Antonisamy, Prasanna S. Premkumar   +2 more
doaj   +2 more sources

Rest-activity profiles among U.S. adults in a nationally representative sample: a functional principal component analysis [PDF]

International Journal of Behavioral Nutrition and Physical Activity, 2022
Background The 24-h rest and activity behaviors (i.e., physical activity, sedentary behaviors and sleep) are fundamental human behaviors essential to health and well-being.
Qian Xiao, Jiachen Lu, Jamie M. Zeitzer, Charles E. Matthews, Pedro F. Saint-Maurice, Cici Bauer   +5 more
doaj   +2 more sources

Functional principal component analysis and sparse-group LASSO to identify associations between biomarker trajectories and mortality among hospitalized SARS-CoV-2 infected individuals [PDF]

BMC Medical Research Methodology, 2023
Background A substantial body of clinical research involving individuals infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has evaluated the association between in-hospital biomarkers and severe SARS-CoV-2 outcomes, including ...
Tingyi Cao, Harrison T. Reeder, Andrea S. Foulkes   +2 more
doaj   +2 more sources

Functional Principal Component Analysis and Randomized Sparse Clustering Algorithm for Medical Image Analysis. [PDF]

PLoS ONE, 2015
Due to the advancement in sensor technology, the growing large medical image data have the ability to visualize the anatomical changes in biological tissues. As a consequence, the medical images have the potential to enhance the diagnosis of disease, the
Nan Lin, Junhai Jiang, Shicheng Guo, Momiao Xiong   +3 more
doaj   +2 more sources

Using functional principal component analysis (FPCA) to quantify sitting patterns derived from wearable sensors [PDF]

International Journal of Behavioral Nutrition and Physical Activity
Background Sedentary behavior (SB) is a recognized risk factor for many chronic diseases. ActiGraph and activPAL are two commonly used wearable accelerometers in SB research. The former measures body movement and the latter measures body posture.
Rong W. Zablocki, Sheri J. Hartman, Chongzhi Di, Jingjing Zou, Jordan A. Carlson, Paul R. Hibbing, Dori E. Rosenberg, Mikael Anne Greenwood-Hickman, Lindsay Dillon, Andrea Z. LaCroix, Loki Natarajan   +10 more
doaj   +2 more sources

Characterization of histone modification patterns and prediction of novel promoters using functional principal component analysis. [PDF]

PLoS ONE, 2020
Characterization of distinct histone methylation and acetylation binding patterns in promoters and prediction of novel regulatory regions remains an important area of genomic research, as it is hypothesized that distinct chromatin signatures may specify ...
Mijeong Kim, Shili Lin
doaj   +2 more sources

Lower-limb surface electromyographic differences in roundhouse kicks between elite and sub-elite taekwondo athletes: a functional principal component analysis [PDF]

Frontiers in Physiology
PurposeThis study aimed to investigate the functional characteristics and distinctions in lower-limb electromyography (EMG) time-series data during roundhouse kicks performed by elite (n = 10) and sub-elite (n = 10) Taekwondo athletes, using Functional ...
Jianbo Sun, Yifei Wang, Jingyuan Sun, Delong Dong, Shazlin Shaharudin   +4 more
doaj   +2 more sources