Abstract. Present methodologies for source apportionment assume fixed profiles. Since meteorology and human activity patterns change seasonally diurnally, application of techniques to shorter rather than longer time periods generates more representative mass spectra. Here, we present a new method conduct resolved by day using the underlying approach positive matrix factorization (PMF). We call ...

The purpose of this investigation was to investigate how the exercise habits college students changed during COVID-19 pandemic lockdown. Data were collected via an online survey distributed through University Southern Maine student email distribution list. All current university invited participate in starting February 2021 March 2021. study included a questionnaire designed capture three month...

Motion tracking and object segmentation are the most fundamental and critical problems in vision tasks such as motion analysis. An active contour model, snake, was developed as a useful segmenting and tracking tool for rigid or non-rigid objects. Snake is designed on the basis of snake energies. Segmenting and tracking can be executed successfully by energy minimization. In this research, two n...

This survey assessed the knowledge of the "Guidance for prescribing exercise" issued by the American College of Sports Medicine (ACSM) in 2011 among certified exercise professionals. A sample of 1,808 certified exercise professionals (66.70% women, mean (± SD) age = 38.28 ± 12.56 years) responded to electronic invitations. The 11-question online questionnaire assessed knowledge of the recommend...

BACKGROUND The health benefits of regular physical activity are well established. However, the relative contribution of heritable and environmental factors to physical activity participation remains controversial. Using a cut-point of 60 minutes of total activity per week, data from the GenomEUtwin project revealed consistent genetic influence on physical activity participation in 37,051 twin p...

None funding has been received for this work from NIH, Wellcome Trust, HHMI or others. The authors have non conflict of interests to report, and results of the present study do not constitute endorsement by ACSM. ABSTRACT Purpose: i) to investigate the effect of age on gender difference in Hawaii Ironman triathlon performance time, and ii) to compare the gender difference between swimming (3.8 ...

PURPOSE Lifestyle analysis is often used for primary and secondary prevention in many chronic metabolic diseases, including diabetes. Questionnaires are simple and common methods for first investigation risk of factors related to the perception of quality of life (QoL). The present study evaluates the feasibility to use questionnaires for first investigation of risk factors, and ascertain wheth...

BACKGROUND U.S. Latinos experience high rates of cardio-metabolic diseases and have high rates of physical inactivity and sedentary behavior. Understanding the environmental factors associated with physical activity and sedentary behaviors among Latinos could inform future interventions. The purpose of this study is to explore the neighborhood environment correlates of physical activity and sed...

The purpose of this study is to determine how caffeine affects exercise blood pressure (BP) and active and passive recovery BP after vigorous intensity exercise in physically active college-aged females. Fifteen physically active, ACSM stratified low-risk females (age (y): 23.53 ± 4.07, weight (kg): 60.34 ± 3.67, height (cm): 165.14 ± 7.20, BMI (kg/m2): 22.18 ± 1.55) participated in two Bruce p...

The purpose of this study was to determine collegiate athletes' knowledge, attitudes, and behaviors concerning hydration and fluid replacement. A survey containing questions pertaining to demographics and knowledge, attitude, and behavior on hydration and fluid replacement was distributed to the athletes during team meetings and practices. A total of 139 out of 171 (81.3%) athletes participated...