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Back to school after lockdown: The effect of COVID-19 restrictions on children’s device-based physical activity metrics

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Journal of Sport and Health Science 2022年第4期11卷 530-536页

作者： Liezel Hurter Melitta McNarry Gareth Stratton kelly mackintosh Applied Sports TechnologyExercise and Medicine Research Centre(A-STEM)Swansea UniversitySwansea SA18ENUK

Background:The coronavirus disease-2019(COVID-19) pandemic and national lockdowns took away opportunities for children to be physically *** study aimed to determine the effect of the COVID-19 lockdown on accelerometer-assessed physical activity(PA) in children in ***:Eight hundred participants(8-18 years old),stratified by sex,age,and socio-economic status,wore Axivity AX3 accelerometers for7 days in February 2021,during the lockdown,and in May 2021,while in *** accelerometer data were processed in R-package GGIR,and cut-point data,average acceleration(AvAcc),intensity gradient,and the acceleration above which the most active X minutes are accumulated(MX) metrics were *** mixed models were used to assess the influence of time-point,sex,age,and socioeconomic status(SES) on ***:During lockdown,moderate-to-vigorous PA was 38.4±24.3 min/day;sedentary time was 849.4±196.6 min/day;mean± *** levels increased significantly upon return to school(all variables p <0.001).While there were no sex differences during lockdown(p=0.233),girls engaged in significantly less moderate-to-vigorous PA than boys once back in school(p <0.001).Furthermore,boys had more favorable intensity profiles than girls(intensity gradient:p <0.001),regardless of *** levels decreased with age at both time-points;upper secondary school girls were the least active group,with an average M30 of 195.2 mg(while in school).Conclusion:The lockdown affected boys more than girls,as reflected by the disappearance of the typical sex difference in PA levels during lockdown,although these were re-established on return to *** secondary school(especially girls) might need specific COVID-recovery intervention.

关键词： Accelerometer Intensity gradient MX metrics

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A mixed-studies systematic review and meta-analysis of school-based interventions to promote physical activity and/or reduce sedentary time in children

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Journal of Sport and Health Science 2020年第1期9卷 3-17,102页

作者： Michelle Jones Emmanuel Defever Ayland Letsinger James Steele kelly A mackintosh Research Office Plymouth Marjon UniversityPlymouth PL48AAUK School of Sport Health and Social SciencesSolent UniversitySouthamptonSO14 OYNUK Department of Health and Kinesiology Texas A&M UniversityCollege StationTX 77843USA The ukactive Research Institute LondonWC1R 4HEUK Applied Sports Science Swansea UniversitySwanseaSA28PPUK

Purpose:The aim of this mixed-studies systematic review was to ascertain the effectiveness of school-based interventions in increasing physical activity(PA) and/or reducing sedentary time(ST) in children aged 5-11 years,as well as to explore their effectiveness in relation to categories of the theory of expanded,extended,and enhanced opportunity(TEO).Methods:Adhering to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses(PRISMA) guidelines,5 databases were searched using predefined search *** title and abstract screening of 1115 records,the removal of duplicates(n=584) and articles that did not meet the inclusion criteria agreed to a priori(n=419) resulted in 112 records that were full-text *** independent reviewers subsequently used the mixed-methods appraisal tool to assess the methodological quality of 57 full-text studies that met the inclusion criteria after full-text *** interventions were summarised using the TIDierR checklist and *** strength of evidence was determined using a 5-level rating system utilising a published decision ***:Overall evidence ratings for interventions implemented within school settings were:no evidence of effects on moderate-to-vigorous physical activity(MVPA) and inconclusive evidence of effects on sedentary *** relation to the TEO,expansion of PA appeared to be the most promising intervention type for MVPA,with moderate evidence of effect,whereas extension and enhancement of PA opportunity demonstrated no evidence of effect.A critical issue of possible compensatory behavior was identified by analysis of intervention effect in relation to PA measurement duration;when studies measured changes in PA during the actual intervention,there was moderate evidence of effect,whereas those that measured changes in PA during the school day presented inconclusive evidence of effect,and those that measured changes in PA over a whole day yielded no evidence of *** meta-analys

关键词： Children Intervention Physical activity School Sedentary time

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Effect of high-intensity interval training in adolescents with asthma:The eXercise for Asthma with Commando Joe’s^(■)(X4ACJ)trial

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Journal of Sport and Health Science 2021年第4期10卷 488-498页

作者： Charles O.N.Winn kelly A.mackintosh William T.B.Eddolls Gareth Stratton Andrew M.Wilson Melitta A.McNarry Gwyneth A.Davies Swansea University Medical School Singleton CampusSwansea UniversitySwansea SA28PPUK Applied Sports Technology Exercise and Medicine(A-STEM)Research CentreCollege of EngineeringBay CampusSwansea UniversitySwansea SA18ENUK Norwich Medical School University of East AngliaNorwichEngland NR47TJUK

Background:Higher levels of cardiorespiratory fitness are associated with reduced asthma severity and increased quality of life in those with ***,the purpose of this study was to evaluate the effectiveness of a 6-month high-intensity interval training(HIIT)intervention in adolescents with and without ***:A total of 616 adolescents(334 boys;13.0±1.1 years,1.57±0.10 m,52.6±12.9 kg,mean±SD),including 155 with asthma(78 boys),were recruited as part of a randomized controlled trial from 5 schools(4 control and 1 intervention).The 221 intervention participants(116 boys;47 asthma)completed 6 months of school-based HIIT(30 min,3 times per week,10-30 s bouts at>90%age-predicted maximum heart rate with equal rest).At baseline,mid-intervention,post-intervention,and 3-month follow-up,measurements for 20-m shuttle run,body mass index(BMI),lung function,Pediatric Quality of Life Inventory,Paediatric Asthma Quality of Life Questionnaire,and Asthma Control Questionnaire were ***,69 adolescents(39 boys(of the 36 with asthma there were 21 boys))also completed an incremental ramp *** analysis,each group’s data(intervention and control)were divided into those with and without ***:Participants with asthma did not differ from their peers in any parameter of aerobic fitness,at any time-point,but were characterized by a greater *** intervention elicited a significant improvement in maximal aerobic fitness but no change in sub-maximal parameters of aerobic fitness,lung function,or quality of life irrespective of asthma *** in the intervention group maintained their BMI,whereas BMI significantly increased in the control group throughout the 6-month ***:HIIT represents an effective tool for improving aerobic fitness and maintaining BMI in adolescents,irrespective of asthma *** was well-tolerated by those with asthma,who evidenced a similar aerobic fitness to their healthy peers and responded equally

关键词： Body mass index Cardiorespiratory fitness Intermittent exercise Intervention Quality of life

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Kinetics of glyphosate and aminomethylphosphonic acid sorption onto montmorillonite clays in soil and their translocation to genetically modified corn

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Journal of Environmental Sciences 2024年第1期135卷 669-680页

作者： Meichen Wang kelly J Rivenbark Timothy D Phillips Veterinary Physiology and Pharmacology College of Veterinary Medicine and Biomedical SciencesTexas A&M UniversityTX 77845USA

The co-occurrence of glyphosate(GLP)and aminomethylphosphonic acid(AMPA)in contaminated water,soil,sediment and plants is a cause for concern due to potential threats to the ecosystem and human health.A major route of exposure is through contact with contaminated soil and consumption of crops containing GLP and AMPA ***,clay-based sorption strategies for mixtures of GLP and AMPA in soil,plants and garden produce have been very *** this study,in vitro soil and in vivo genetically modified corn models were used to establish the proof of concept that the inclusion of clay sorbents in contaminated soils will reduce the bioavailability of GLP and AMPA in soils and their adverse effects on plant *** of chemical concentration(1–10 mg/kg),sorbent dose(0.5%-3%in soil and 0.5%-1%in plants)and duration(up to 28 days)on sorption kinetics were *** time course results showed a continuous GLP degradation to *** inclusion of calcium montmorillonite(CM)and acid processed montmorillonite(APM)clays at all doses significantly and consistently reduced the bioavailability of both chemicals from soils to plant roots and leaves in a dose-and time-dependent manner without detectable *** treated with 0.5%and 1%APM inclusion showed the highest growth rate(p≤0.05)and lowest chemical bioavailability with up to 76%reduction in roots and57%reduction in *** indicated that montmorillonite clays could be added as soil supplements to reduce hazardous mixtures of GLP and AMPA in soils and plants.

关键词： Glyphosate AMPA Adsorption Soil remediation Plant Hydroponic system

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SnRK1a1, a new player in the sucrose-Opaque2 network during endosperm filling

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Molecular Plant 2024年第8期17卷 1172-1174页

作者： kelly Mayrink Balmant Marcio F.R.Resende Jr. Horticultural Sciences Department University of FloridaGainesvilleFLUSA

Maize(Zea mays)endosperm is an important food source for humans and *** addition,it is considered an excellent model for research on seed development because of its relatively large size for both embryo and endosperm compared to those of other crop species,such as rice(Oryza sativa)and wheat(Triticum aestivum).After double fertilization,early maize endosperm development includes three stages:(i)a multinucleate coenocyte stage;(i)a cellularization stage,in which the cellular endosperm is formed;and(ii)a stage of differentiation into distinct *** early differentiation,four major cell types with specific functions differentiate within the endosperm:starchy endosperm,aleurone layer,basal endosperm transfer layer(BETL),and embryo surrounding *** subaleurone,conducting zone,basal intermediate zone,and endosperm adjacent to scutellum arise in late differentiation(Sabelli and Larkins 2009).After the main cell types are established,maize endosperm undergoes intensive cell proliferation,which marks the transition to the endosperm-filling *** the endosperm-flling stage,the maternal sucrose products are transported to seeds through the BETL region,where they will act as the main carbon substrate for storage products such as starch and proteins(Chen et al.,2023).In fact,the endosperm of maize seeds accounts for approximately 90%of the total grain weight,serving as an important nutrient reservoir(Flint-Garcia et al.,2009).

关键词： endosperm reservoir Flint

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Hepatocellular carcinoma presenting as an extrahepatic mass:A case report and review of literature

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 2241-2252页

作者： Wei kelly Wu Krutika Patel Chandrasekhar Padmanabhan Kamran Idrees Department of Surgery Vanderbilt University Medical CenterNashvilleTN 37232United States Department of Pathology Microbiology and ImmunologyVanderbilt University Medical CenterNashvilleTN 37232United States Division of Surgical Oncology and Endocrine Surgery Department of SurgeryVanderbilt University Medical CenterNashvilleTN 37232United States

BACKGROUND Hepatocellular carcinoma(HCC)is a primary liver tumor generally diagnosed based on radiographic *** disease is typically associated with increased tumor diameter,multifocality,and vascular *** report a case of a patient who presented with extrahepatic HCC metastasis to a portocaval lymph node with occult hepatic primary on computed tomography(CT).We review the literature for cases of extrahepatic HCC presentation without known hepatic lesions and discuss strategies to differentiate between metastatic and ectopic *** SUMMARY A 67-year-old male with remotely treated hepatis C was referred for evaluation of an enlarging portocaval,mixed cystic-solid *** CT evaluations demonstrated steatosis,but no cirrhosis or liver *** ultrasound demonstrated a normal-appearing pancreas,biliary tree,and *** needle aspiration yielded atypical *** differential diagnosis included duodenal or pancreatic cyst,lymphoproliferative cyst,stromal or mesenchymal lesions,nodal involvement from gastrointestinal or hematologic malignancy,or duodenal gastrointestinal stromal *** review by a multidisciplinary tumor board,the patient underwent open surgical resection of a 5.2 cm×5.5 cm retroperitoneal mass with pathology consistent with moderately-differentiated *** resonance imaging(MRI)subsequently demonstrated a 1.2 cm segment VIII hepatic lesion with late arterial enhancement,fatty sparing,and intrinsic T1 *** fetoprotein was 23.3 ng/*** patient was diagnosed with HCC with portocaval nodal ***:We surveyed the literature for HCC presenting as extrahepatic masses without history of concurrent or prior intrahepatic *** identified 18 cases of extrahepatic HCC ultimately found to represent metastatic lesions,and 30 cases of extrahepatic HCC found to be primary,ectopic *** Hepatocellular carcinoma can seldomly present with extrahepatic metastasis in the setting of

关键词： Extrahepatic Metastasis Portocaval Lymph node Case report

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A review of public health guidelines for postpartum physical activity and sedentary behavior from around the world

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Journal of Sport and Health Science 2024年第4期13卷 472-483,F0003页

作者： kelly R.Evenson Wendy J.Brown Alison K.Brinson Emily Budzynski-Seymour Melanie Hayman Department of Epidemiology Gillings School of Global Public HealthUniversity of North Carolina at Chapel HillChapel HillNC 27599-8050USA Faculty of Health Sciences and Medicine Bond UniversityGold CoastQLD 4226Australia School of Human Movement and Nutrition Sciences The University of QueenslandBrisbaneQLD 4072Australia Department of Anthropology University of North Carolina at Chapel HillChapel HillNC 27599-3115USA Carolina Population Center University of North Carolina at Chapel HillChapel HillNC 27599-8120USA Faculty of Sport Health and Social SciencesSolent UniversitySouthamptonSO140YNUK Appleton Institute School of HealthMedical and Applied SciencesCentral Queensland UniversityRockhamptonQLD 4701Australia

Background:The period following pregnancy is a critical time window when future habits with respect to physical activity(PA) and sedentary behavior(SB) are established;therefore,it warrants *** purpose of this scoping review was to summarize public health-oriented country-specific postpartum PA and SB guidelines ***:To identity guidelines published since 2010,we performed a(a) systematic search of 4 databases(CINAHL,Global Health,PubMed,and SPORTDiscus),(b) structured repeatable web-based search separately for 194 countries,and(c) separate web-based *** the most recent guideline was included for each ***:We identified 22 countries with public health-oriented postpartum guidelines for PA and 11 countries with SB *** continents with guidelines included Europe(n=12),Asia(n=5),Oceania(n=2),Africa(n=1),North America(n=1),and South America(n=1).The most common benefits recorded for PA included weight control/management(n=10),reducing the risk of postpartum depression or depressive symptoms(n=9),and improving mood/well-being(n=8).Postpartum guidelines specified exercises to engage in,including pelvic floor exercises(n=17);muscle strengthening,weight training,or resistance exercises(n=13);aerobics/general aerobic activity(n=13);walking(n=11);cycling(n=9);and swimming(n=9).Eleven guidelines remarked on the interaction between PA and breastfeeding;several guidelines stated that PA did not impact breast milk quantity(n=7),breast milk quality(n=6),or infant growth(n=3).For SB,suggestions included limiting long-term sitting and interrupting sitting with ***:Country-specific postpartum guidelines for PA and SB can help promote healthy behaviors using a culturally appropriate context while providing specific guidance to public health practitioners.

关键词： Breastfeeding Caesarean section Guidelines Postnatal Recommendations

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Shanghai Drone Photographer Tim Chambers

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城市漫步（GBA版） 2024年第1期 12-21页

作者： Ned kelly 不详

If you recognize the name Tim Chambers,it may be because he is the man,the myth and the legend that rode every Shanghai Metro line in one go.

关键词： Chambers Metro Shanghai

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Multiple myeloma survival in New South Wales, Australia, by treatment era to 2020

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Cancer Biology & Medicine 2024年第8期21卷 703-711页

作者： Eleonora Feletto Qingwei Luo Anna kelly Marianne Weber David Goldsbury Katherine Barron Karen Canfell Xue Qin Yu The Daffodil Centre The University of Sydney A Joint Venture with Cancer Council NSW

Objective: Australia has relatively high multiple myeloma(MM) incidence and mortality rates. Advancements in MM treatment over recent decades have driven improvements in MM survival in high-income countries; however, reporting in Australia is limited. We investigated temporal trends in population-wide MM survival across 3 periods of treatment advancements in New South Wales(NSW), ***: Individuals with an MM diagnosis in the NSW Cancer Registry between 1985 and 2015 with vital follow-up to 2020, were categorized into 3 previously defined treatment eras according to their diagnosis date(1985±1995, chemotherapy only; 1996±2007, autologous stem cell transplantation; and 2008±2015, novel agents including proteasome inhibitors and immunomodulatory drugs). Both relative survival and cause-specific survival according to Fine and Gray's competing risks cumulative incidence function were calculated by treatment era and age at ***: Overall, 11,591 individuals were included in the study, with a median age of 70 years at diagnosis. Five-year relative survival improved over the 36-year(1985±2020) study period(31.0% in 1985±1995; 41.9% in 1996±2007; and 56.1% in 2008±2015). For individuals diagnosed before 70 years of age, the 5-year relative survival nearly doubled, from 36.5% in 1985±1995 to 68.5% in 2008±2015. Improvements for those > 70 years of age were less pronounced between 1985±1995 and 1996±2007; however, significant improvements were observed for those diagnosed in 2008±2015. Similar overall and age-specific patterns were observed for causespecific survival. After adjustment for gender and age at diagnosis, treatment era was strongly associated with both relative and cause-specific survival(P < 0.0001).Conclusions: Survival of individuals with MM is improving in Australia with treatment advances. However, older age groups continue to experience poor survival outcomes with only modest improvements over time. Given the increasing prevalence of

关键词： Australia Multiple myeloma cancer epidemiology competing risk analysis survival analysis

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ZenZone App-One Teenager's Answer to Digital Distractions

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城市漫步（GBA版） 2024年第1期 50-51页

作者： Ned kelly 不详

When Shanghai American School Puxi student Luke Penaloza's gaming device broke,he found his academic performance saw a stark *** was a revelation,and one that inspired him to develop ZenZone.

关键词： One Zen App

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