The Day-Level Association Between Child Care Attendance and 24-Hour Movement Behaviors in Preschool-Aged Children
CONCLUSIONS: Child care attendance was not associated with 24-hour PA or sleep; however, it was associated with less ST. More research utilizing objective measures of ST and more robust measures of daily schedules or structure is necessary to better understand how existing infrastructure may influence preschool-aged children's 24-hour movement behaviors. In addition, future research should consider how access to child care may influence child care attendance.PMID:38580305 | DOI:10.1123/jpah.2023-0656 (Source: Health Physics)
Source: Health Physics - April 5, 2024 Category: Physics Authors: Hannah Parker Sarah Burkart Layton Reesor-Oyer Lauren von Klinggraeff Christopher D Pfledderer Elizabeth Adams Robert G Weaver Michael W Beets Bridget Armstrong Source Type: research
Fully automatic online geometric calibration for non-circular cone-beam CT orbits using fiducials with unknown placement
CONCLUSIONS: We have demonstrated an automatic online geometric calibration method that delivers high spatial resolution and robustness performance. This methodology enables arbitrary scan trajectories and should facilitate translation of such acquisition methods in a clinical setting.PMID:38573172 | DOI:10.1002/mp.17041 (Source: Health Physics)
Source: Health Physics - April 4, 2024 Category: Physics Authors: Yiqun Q Ma Tess Reynolds Tina Ehtiati Clifford Weiss Kelvin Hong Nicholas Theodore Grace J Gang J Webster Stayman Source Type: research
Quantity and quality are increasing but there's room for improvement: A scoping review of physical activity intervention trials
CONCLUSION: A large volume of trials has investigated physical activity interventions. The quality of these trial reports is suboptimal but improving over time. Journal ranking should not be used for selecting high quality trials.PMID:38574557 | DOI:10.1016/j.bjpt.2024.101051 (Source: Health Physics)
Source: Health Physics - April 4, 2024 Category: Physics Authors: Marina B Pinheiro Ana Helena S Reis Jennifer N Baldwin Anne M Moseley Vishwesh Bapat Courtney S Chan Wing S Kwok Catherine Sherrington Source Type: research
Perceived Barriers to Physical Activity Among Youth Living in Rural and Urban Canadian Communities: A Nationally Representative Cross-Sectional Study
CONCLUSION: PA barriers are not universal among Canadian youth. Our analyses highlight the importance of testing interactions in similar studies as well as considering key sociodemographic characteristics when designing interventions.PMID:38575136 | DOI:10.1123/jpah.2023-0254 (Source: Health Physics)
Source: Health Physics - April 4, 2024 Category: Physics Authors: Taru Manyanga Nicole White Larine Sluggett Annie Duchesne David Anekwe Chelsea Pelletier Source Type: research
Fully automatic online geometric calibration for non-circular cone-beam CT orbits using fiducials with unknown placement
CONCLUSIONS: We have demonstrated an automatic online geometric calibration method that delivers high spatial resolution and robustness performance. This methodology enables arbitrary scan trajectories and should facilitate translation of such acquisition methods in a clinical setting.PMID:38573172 | DOI:10.1002/mp.17041 (Source: Health Physics)
Source: Health Physics - April 4, 2024 Category: Physics Authors: Yiqun Q Ma Tess Reynolds Tina Ehtiati Clifford Weiss Kelvin Hong Nicholas Theodore Grace J Gang J Webster Stayman Source Type: research
Prognosis of Pain after Stroke during Rehabilitation Depends on the Pain Quality
CONCLUSION: The study classified patients into clinically meaningful subgroups using pain quality data and provided insight into their prognosis of pain. The findings could be useful for guiding personalized rehabilitation strategies for pain management.IMPACT: Assessment of pain quality in patients with pain after stroke leads to personalized rehabilitation for pain management.PMID:38567849 | DOI:10.1093/ptj/pzae055 (Source: Health Physics)
Source: Health Physics - April 3, 2024 Category: Physics Authors: Shinji Uragami Michihiro Osumi Masahiko Sumitani Masanori Fuyuki Yuki Igawa Shinya Iki Masayuki Koga Yoichi Tanaka Gosuke Sato Shu Morioka Source Type: research
Measurement of a Bubble-Free Chemical Oscillator Using QCMs Treated with Self-Assembled Monolayers
J Phys Chem B. 2024 Apr 3. doi: 10.1021/acs.jpcb.4c00002. Online ahead of print.ABSTRACTThe oscillation of a 1,4-cyclohexanedione-bromate (CHD-bromate) system was investigated by using a quartz crystal microbalance (QCM) without or with a self-assembled monolayer (SAM), where gold and platinum were used for QCM electrodes and SAMs were composed of HS(CH2)11CH3, HS(CH2CH2O)5H, and HS(CH2CH2O)5CH3. The CHD-bromate system is well-known as a bubble-free oscillator and oscillates without or with a catalyst. In the CHD-bromate system without a catalyst, the oscillation of a resonant frequency shift (ΔF) of the QCM was observed ...
Source: Health Physics - April 3, 2024 Category: Physics Authors: Minoru Yoshimoto Shigeru Kurosawa Mutsuo Tanaka Source Type: research
Replace the Linear No-threshold Model with a Risk-informed Targeted Approach to Radiation Protection
Health Phys. 2024 Apr 3. doi: 10.1097/HP.0000000000001803. Online ahead of print.ABSTRACTThe linear no-threshold (LNT) model may be useful as a simple basis for developing radiation protection regulations and standards, but it bears little resemblance to scientific reality and is probably overly conservative at low doses and low dose rates. This paper is an appeal for a broader view of radiation protection that involves more than just optimization of radiation dose. It is suggested that the LNT model should be replaced with a risk-informed, targeted approach to limitation of overall risks, which include radiation and other...
Source: Health Physics - April 3, 2024 Category: Physics Authors: Rodican P Reed Source Type: research
A Review of Recent Low-dose Research and Recommendations for Moving Forward
Health Phys. 2024 Apr 3. doi: 10.1097/HP.0000000000001808. Online ahead of print.ABSTRACTThe linear no-threshold (LNT) model has been the regulatory "law of the land" for decades. Despite the long-standing use of LNT, there is significant ongoing scientific disagreement on the applicability of LNT to low-dose radiation risk. A review of the low-dose risk literature of the last 10 y does not provide a clear answer, but rather the body of literature seems to be split between LNT, non-linear risk functions (e.g., supra- or sub-linear), and hormetic models. Furthermore, recent studies have started to explore whether radiation ...
Source: Health Physics - April 3, 2024 Category: Physics Authors: Charles Wilson Grace G Adams Pooja Patel Kiran Windham Colby Ennis Emily Caffrey Source Type: research
The Impact of the Linear No-threshold Hypothesis on Litigation
Health Phys. 2024 Apr 3. doi: 10.1097/HP.0000000000001799. Online ahead of print.ABSTRACTAs the basis of radiation safety practice and regulations worldwide, the linear no-threshold (LNT) hypothesis exerts enormous influence throughout society. This includes our judicial system, where frivolous lawsuits are filed alleging radiation-induced health effects caused by negligent companies who subject unwitting victims to enormous financial and physical harm. Typically, despite the lack of any supporting scientific basis, these cases result in enormous costs to organizations, insurance companies, and consumers.PMID:38568160 | DO...
Source: Health Physics - April 3, 2024 Category: Physics Authors: Alan Fellman Dave Wiedis Source Type: research
Society and Nuclear Energy: What Is the Role for Radiological Protection?
Health Phys. 2024 Apr 3. doi: 10.1097/HP.0000000000001795. Online ahead of print.ABSTRACTThe harm that society expects from ionizing radiation does not match experience. Evidently there is some basic error in this assumption. A reconsideration based on scientific principles shows how simple misunderstandings have exaggerated dangers. The consequences for society are far-reaching. The immediate impact of ionizing radiation on living tissue is destructive. However, this oxidative damage is similar to that produced during normal metabolic activity where the subsequent biological reaction is not only protective but also stimul...
Source: Health Physics - April 3, 2024 Category: Physics Authors: Wade Allison Source Type: research
Science-informed Policy Making for Protecting People and the Environment from Radiation
Health Phys. 2024 Apr 3. doi: 10.1097/HP.0000000000001831. Online ahead of print.ABSTRACTThe process to arrive at the radiation protection practices of today to protect workers, patients, and the public, including sensitive populations, has been a long and deliberative one. This paper presents an overview of the US Environmental Protection Agency's (US EPA) responsibility in protecting human health and the environment from unnecessary exposure to radiation. The origins of this responsibility can be traced back to early efforts, a century ago, to protect workers from x rays and radium. The system of radiation protection we ...
Source: Health Physics - April 3, 2024 Category: Physics Authors: David Borrego Jonathan S Nagata Michael A Boyd Sara D DeCair Lauren R Matakas Ellen W Wang David J Pawel Armin J Ansari Source Type: research
Why This Special Issue?
Health Phys. 2024 Apr 3. doi: 10.1097/HP.0000000000001825. Online ahead of print.NO ABSTRACTPMID:38568168 | DOI:10.1097/HP.0000000000001825 (Source: Health Physics)
Source: Health Physics - April 3, 2024 Category: Physics Authors: Mike Mahathy Source Type: research
Protracted Exposure to a Sub-background Radiation Environment Negatively Impacts the Anhydrobiotic Recovery of Desiccated Yeast Sentinels
This study aimed to determine the impact of prolonged sub-background radiation exposure in anhydrobiotic (desiccated) yeast at SNOLAB in Sudbury, Ontario, Canada. Two yeast strains were used: a normal wild type and an isogenic recombinational repair-deficient rad51 knockout strain (rad51Δ). Desiccated yeast samples were stored in the normal background surface control laboratory (68.0 nGy h-1) and in the sub-background environment within SNOLAB (10.1 nGy h-1) for up to 48 wk. Post-rehydration survival, growth rate, and metabolic activity were assessed at multiple time points. Survival in the sub-background environment was ...
Source: Health Physics - April 3, 2024 Category: Physics Authors: Michel R Lapointe Taylor Laframboise Jake Pirkkanen T C Tai Simon J Lees Sergio R Santa Maria Sujeenthar Tharmalingam Douglas R Boreham Christopher Thome Source Type: research
A Revised System of Radiological Protection Is Needed
Health Phys. 2024 Apr 3. doi: 10.1097/HP.0000000000001791. Online ahead of print.ABSTRACTThe system of radiological protection has been based on linear no-threshold theory and related dose-response models for health detriment (in part related to cancer induction) by ionizing radiation exposure for almost 70 y. The indicated system unintentionally promotes radiation phobia, which has harmed many in relationship to the Fukushima nuclear accident evacuations and led to some abortions following the Chernobyl nuclear accident. Linear no-threshold model users (mainly epidemiologists) imply that they can reliably assess the cance...
Source: Health Physics - April 3, 2024 Category: Physics Authors: Bobby R Scott Source Type: research
