Participation in surfing has evolved to include all age groups. Therefore, the purpose of this study was to determine whether activity levels and cardiovascular responses to surfing change with age. Surfing time and heart rate (HR) were measured for the total surfing session and within each activity of surfing (paddling, sitting, wave riding, and miscellaneous). Peak oxygen consumption (VO) was also measured during laboratory-based simulated surfboard paddling on a modified swim bench ergometer. VO decreased with age during simulated paddling (r = -.455, p < .001, n = 68). Total time surfing (p = .837) and time spent within each activity of surfing did not differ with age (n = 160). Mean HR during surfing significantly decreased with age (r = -.231, p = .004). However, surfing HR expressed as a percent of age-predicted maximum increased significantly with age. Therefore, recreational surfers across the age spectrum are achieving intensities and durations that are consistent with guidelines for cardiovascular health.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1123/japa.2016-0041 | DOI Listing |
Int J Hyg Environ Health
January 2025
Department of Occupational and Environmental Medicine, Danish Ramazzini Centre, Aalborg University Hospital, Havrevangen 1, 9000, Aalborg C, Denmark; Department of Clinical Medicine, Aalborg University, Selma Lagerløftsvej 249, 9260, Aalborg, Denmark.
Background: Per- and poly-fluoroalkyl Substances (PFAS) have been used for decades in countless households and industrial products. Many PFAS do not degrade and are thus ubiquitous in the environment and within organisms. Humans are primarily exposed to PFAS through ingestion and inhalation, and such exposure has been associated with several health effects.
View Article and Find Full Text PDFSmall
January 2025
SUNAG Laboratory, Institute of Physics, Sachivalaya Marg, Bhubaneswar, 751 005, India.
Understanding the resistive switching (RS) behavior of oxide-based memory devices at nanoscale is crucial for advancement of high-integration density in-memory computing platforms. This study explores a comprehensive growth parameter space to address the RS behavior of pulsed-laser-deposited substoichiometric TiO (TiO) thin films in search of tailored nanoscale memristors with low-power consumption and high stability. Conductive-atomic-force-microscopy-based measurements facilitate deciphering the switching behavior at nanoscale, providing a direct avenue to understand the microstructure-property relationships.
View Article and Find Full Text PDFProc Biol Sci
January 2025
Department of Biosciences, Centre for Ecological and Evolutionary Synthesis (CEES), University of Oslo, P.O. Box 1066 Blindern, NO-0316, Oslo, Norway.
The timing of migration is fundamental for species exploiting seasonally variable environments. For ungulates, earlier spring migration is expected with earlier vegetation green-up. However, other drivers, such as access to agricultural farmland and variation in local conditions, are also known to affect migration.
View Article and Find Full Text PDFPLoS One
December 2024
School of Foreign Languages, Chongqing Technology and Business University, Chongqing, China.
The prevalence of overweight and obesity among adolescents has been increasing steadily. This study aims to investigates the causal effect and underlying mechanisms between Internet use and body weight among Chinese adolescents. Using data from China Health and Nutrition Survey (CHNS) spanning from 2004 to 2015, the analytical sample includes 3054 participants (aged 11-19, 48% females).
View Article and Find Full Text PDFCan J Public Health
December 2024
Water, Health, and Applied Microbiology Lab (WHAM Lab), Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.
Objectives: The burden of acute gastrointestinal illness (AGI) attributable to natural water recreation in Canada is unknown. Understanding the burden can help prioritize public health interventions and resource allocation for reduction of disease. Our objectives were to compile estimates of AGI burden associated with natural water recreation, identify knowledge gaps in water recreation epidemiology, and evaluate methods applicable for developing a burden estimate for Canada.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!