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Prospective associations between joint categories of physical activity and insomnia symptoms with onset of poor mental health in a population-based cohort

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journal of Sport and Health Science 2023年第3期12卷 295-303页

作者： mitch j duncan Elizabeth G Holliday Nicola W Burton Nicholas Glozier Stina Oftedal School of Medicine and Public Health College of HealthMedicineand WellbeingThe University of NewcastleCallaghanNSW 2308Australia Priority Research Centre for Physical Activity and Nutrition The University of NewcastleCallaghanNSW 2308Australia School of Applied Psychology Griffith UniversityBrisbaneQLD 4122Australia Menzies Health Institute Queensland Griffith UniversityBrisbaneQLD 4122Australia Brain and Mind Centre Central Clinical SchoolThe University of SydneyNSW 2050Australia

Background:Physical inactivity and insomnia symptoms are independently associated with increased risk of depression and anxiety;however,few studies jointly examine these risk *** study aimed to prospectively examine the joint association of physical activity(PA)and insomnia symptoms with onset of poor mental health in ***:Participants from the 2013 to 2018 annnual waves of the Household Income and Labour Dynamics in Australia panel study who had good mental health(Mental Health Inventory-5>54)in 2013,and who completed at least 1 follow-up survey(2014-2018),were included(n=10,977).Poor mental health(Mental Health Inventory-5≤54)was assessed ***(2013)PA was classified as high/moderate/low,and insomnia symptoms(i.e.,trouble sleeping)were classified as no insomnia symptoms/insomnia symptoms,with 6 mutually exclusive PAinsomnia symptom groups *** of PA-insomnia symptom groups with onset of poor mental health were examined using discrete-time proportional-hazards logit-hazard ***:There were 2322 new cases of poor mental health(21.2%).Relative to the high PA/no insomnia symptoms group,there were higher odds(odds ratio and 95%confidence interval(95%CI))of poor mental health among the high PA/insomnia symptoms(OR=1.87,95%CI:1.57-2.23),moderate PA/insomnia symptoms(OR=1.93,95%CI:1.61-2.31),low PA/insomnia symptoms(OR=2.33,95%CI:1.96-2.78),and low PA/no insomnia symptoms(OR=1.14,95%CI:1.01-1.29)*** level of PA combined with insomnia symptoms was associated with increased odds of poor mental health,with the odds increasing as PA ***:The se findings highlight the potential benefit of interventions targeting both PA and insomnia symptoms for promoting mental health.

关键词： Depression Physical activity Sleep quality

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Associations between aerobic and muscle-strengthening physical activity,sleep duration,and risk of all-cause mortality:A prospective cohort study of 282,473 ***

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journal of Sport and Health Science 2023年第1期12卷 65-72页

作者： mitch j.duncan Stina Oftedal Christopher E Kline Ronald C.Plotnikoff Elizabeth G.Holliday School of Medicine&Public Health College of HealthMedicineand WellbeingThe University of NewcastleCallaghanNSW 2308Australia Priority Research Centre for Physical Activity and Nutrition The University of NewcastleCallaghanNSW 2308Australia Department of Health&Human Development The University of PittsburghPittsburghPA 15261USA School of Education University of NewcastleCallaghanNSW 2308Australia

Purpose:To examine the joint associations between meeting guidelines for physical activity(PA)and sleep duration and all-cause mortality risk among ***:Participants were adults(n=282,473)aged 18-84 years who participated in the 2004-2014 *** Health Interview *** status was ascertained using the National Death Index through December ***-reported PA(Active:meeting both aerobic(AER)and muscle-strengthening(MSA)guidelines,AER only(AER),MSA only(MSA),or not meeting either AER or MSA(Inactive))and sleep duration(Short,recommended(Rec),or Long)were classified according to guidelines,and 12 PA-sleep categories were *** hazard ratios and 95%confidence intervals(95%CIs)for all-cause mortality risk were estimated using Cox proportional hazards regression ***:A total of 282,473 participants(55%females)were included;18,793 deaths(6.7%)occurred over an average follow-up of 5.4 *** to the Active-Rec group,all other PA-sleep groups were associated with increased mortality risk except for the Active-Short group(hazard ratio=1.08;95%CI:0.92-1.26).The combination of long sleep with either MSA or Inactive appeared to be *** a given sleep duration,mortality risk progressively increased among participants classified as AER,MSA,and *** each activity level,the mortality risk was greatest among adults with long ***:Relative to adults meeting guidelines for both PA and sleep duration,adults who failed to meet guidelines for both AER and muscle strengthening PA and who also failed to meet sleep duration guidelines had elevated all-cause mortality *** results support interventions targeting both PA and sleep duration to reduce mortality risk.

关键词： Activity-sleep patterns All-cause mortality Prospective Resistance training

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Effect of different intensities of physical activity on cardiometabolic markers and vascular and cardiac function in adult rats fed with a high-fat high-carbohydrate diet

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journal of Sport and Health Science 2018年第1期7卷 109-119页

作者： Romeo B.Batacan jr mitch j.duncan Vincent j.Dalbo Geraldine L.Buitrago Andrew S.Fenning School of Medical and Applied Sciences Central Queensland University Centre for Physical Activity Studies Central Queensland University School of Medicine & Public Health Priority Research Centre for Physical Activity and Nutrition Faculty of Health and MedicineThe University of Newcastle University Drive Clinical Biochemistry Laboratory Central Queensland University Centre for Biodiscovery and Molecular Development of Therapeutics Australian Institute of Tropical Health and MedicineJames Cook University

Background: Physical activity(PA) and diet are 2 lifestyle factors that affect cardiometabolic risk. However, data on how a high-fat highcarbohydrate(HFHC) diet influences the effect of different intensities of PA on cardiometabolic health and cardiovascular function in a controlled setting are yet to be fully established. This study investigated the effect of sedentary behavior, light-intensity training(LIT), and high-intensity interval training(HIIT) on cardiometabolic markers and vascular and cardiac function in HFHC-fed adult ***: Twelve-week-old Wistar rats were randomly allocated to 4 groups(12 rats/group): control(CTL), sedentary(SED), LIT, and *** indices, glucose and lipid control, inflammatory and oxidative stress markers, vascular reactivity, and cardiac electrophysiology of the experimental groups were examined after 12 weeks of HFHC-diet feeding and PA ***: The SED group had slower cardiac conduction(p = 0.0426) and greater thoracic aortic contractile responses(p < 0.05) compared with the CTL group. The LIT group showed improved cardiac conduction compared with the SED group(p = 0.0003), and the HIIT group showed decreased mesenteric artery contractile responses compared with all other groups and improved endothelium-dependent mesenteric artery relaxation compared with the LIT group(both p < 0.05). The LIT and HIIT groups had lower visceral(p = 0.0057 for LIT, p = 0.0120 for HIIT)and epididymal fat(p < 0.0001 for LIT, p = 0.0002 for HIIT) compared with the CTL ***: LIT induced positive adaptations on fat accumulation and cardiac conduction, and HIIT induced a positive effect on fat accumulation,mesenteric artery contraction, and endothelium-dependent relaxation. No other differences were observed between groups. These findings suggest that few positive health effects can be achieved through LIT and HIIT when consuming a chronic and sustained HFHC diet.

关键词： High-intensity interval training Inflammation Light-intensity training Metabolic syndrome Oxidative stress Sedentary behavior Western diet

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Acceptability,usefulness,and satisfaction with a web-based video-tailored physical activity intervention:The TaylorActive randomized controlled trial

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journal of Sport and Health Science 2022年第2期11卷 133-144,I0001页

作者： Stephanie Schoeppe mitch j.duncan Ronald C.Plotnikoff W.Kerry Mummery Amanda Rebar Stephanie Alley Quyen To Camille E.Short Corneel Vandelanotte Central Queensl and University School of HealthMedical and Applied SciencesAppleton InstitutePhysical Activity Research GroupRockhamptonQLD 4702Australia The University of Newcastle College of HealthMedicineand WellbeingSchool of Medicine&Public HealthNewcastleNSW 2308Australia The University of Newcastle Priority Research Centre for Physical Activity and NutritionNewcastleNSW 2308Australia The University of Newcastle Priority Research Centre for Physical Activity and NutritionCollege of Human and Social FuturesNewcastleNSW 2308Australia The University of Alberta Faculty of KinesiologySport and RecreationEdmontonAB T6G 2R3Canada The University of Melbourne Faculty of MedicineDentistry and Health ScienceMelbourne School of Psychological SciencesMelbourneVIC 3010Australia

Purpose:This study aimed to examine the usage,acceptability,usability,perceived usefulness,and satisfaction of a web-based video-tailored physical activity(PA)intervention(TaylorActive)in ***:In 2013-2014,501 Australian adults aged 18+years were randomized into a video-tailored intervention,text-tailored intervention,or control *** 3 months,the intervention groups received access to 8 sessions of personally tailored PA advice delivered via the TaylorActive *** the delivery method differed between the intervention groups:video-tailored *** Analytics and telephone surveys conducted at post intervention(3 months)were used to assess intervention usage,acceptability,usability,perceived usefulness,and *** and qualitative process data were analyzed using descriptive statistics and thematic content ***:Of 501 recruited adults,259 completed the 3-month post-intervention survey(52%retention).Overall,usage of the TaylorActive website with respect to number of website visits,intervention sessions,and action plans completed was modest in both the video-tailored(7.6士7.2 visits,mean±SD)and text-tailored(7.3±5.4 visits)groups with no significant between-group *** majority of participants in all groups used the TaylorActive website less than once in 2 weeks(66.7%video-tailored,62.7%text-tailored,87.5%control;p<0.001).Acceptability was rated mostly high in all groups and in some instances,significantly higher in the intervention groups compared to the control group(p<0.010).Usability was also rated high;mean Systems Usability Scores were 77.3(video-tailored),75.7(text-tailored),and 74.1(control)with no significant between-group *** usefulness of the TaylorActive intervention was low,though mostly rated higher in the intervention groups compared to the control group(p<0.010).Satisfaction with the TaylorActive website was *** in both intervention groups liked i

关键词： Online Physical activity Process evaluation Program Video-based

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Add-on Renewables Aim to Decrease Impact and Increase Benefits

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Engineering 2024年第6期37卷 10-12页

作者： mitch Leslie Senior Technology Writer

In the South Boulder Canal near Denver,CO,USA,turbine blades that resemble the mixers used to stir cake batter in kitchens(Fig.1)spin in the rushing water[1].Each of the turbines,manufactured by Emrgy of Atlanta,GA,USA,generates up to 25 kW of electricity for the area’s grid[2].In an orchard in southern Italy,an arcade of solar panels stands above rows of citron trees,which are valuable for the essential oils in their fruits[3].The solar panels not only produce electricity for local homes,but also protect the trees from the sun,reducing their water use by 70%[3].These are two examples of a clean energy trend:integrating power-generation with other *** the approach called agrivoltaics,for example,farmers and ranchers grow crops or raise livestock around and beneath solar panels(Fig.2)[4].Experts hope that such add-on strategies can spare farmland,cut the environmental costs of clean energy development,supply extra income to landowners,and furnish other benefits[5,6].

关键词： income beneath integrating

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日本福岛核污染水排海引发争议

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Engineering 2024年第3期34卷 6-8页

作者： mitch Leslie Senior Technology Writer

In late August 2023,China cut off seafood imports from japan[1]and criticized its neighbor for being “extremely selfish and irresponsible”[2].In Seoul,the Republic of Korea,protesters marched through the streets,held a candlelight vigil,and attempted to force their way into the japanese embassy[3].The environmental organization Greenpeace denounced japan for violating human rights and breaking international law[4].

关键词：核污染 breaking peace

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人工智能或将引发科学革命

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Engineering 2024年第4期35卷 4-6页

作者： mitch Leslie Senior Technology Writer

A drug developer trying to devise a new cancer treatment,a virologist investigating how a virus invades cells,an evolutionary biologist probing the effects of mutations on an organism’s fitness—these are just some of the scientists who need to know the three-dimensional structures of specific ***,deducing a protein’s shape through experiments is laborious and costly[1].

关键词：人工智能 cancer treatment

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Is There a Bright Future for Solar Power from Space?

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Engineering 2024年第2期33卷 9-11页

作者： mitch Leslie Senior Technology Writer

Late in the evening of May 22,2023,a team of researchers at the California Institute of Technology(Caltech)in Pasadena,CA,USA,measured a faint beam of microwaves emanating from a solar-powered satellite 550 km *** send signals to Earth all the time,but this occasion was *** satellite car-ried a unique transmitter developed by the Caltech researchers,a 30 cm by 30 cm array of polyimide and copper designed to be lightweight and *** that transmitter,the satellite became the first spacecraft to direct solar power captured in space to the Earth’s surface.

关键词： Earth Solar lightweight

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Can Giant Microchips Become a Big Deal?

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Engineering 2024年第5期36卷 6-8页

作者： mitch Leslie Senior Technology Writer

For decades,manufacturers have boasted about how small they can make microchip *** have shrunk by about 1000-fold over the last 50 years,for example[1].But Cerebras Systems,*** Sunnyvale,CA,USA takes pride in how big its chips *** from a single silicon wafer,its Wafer-Scale Engine(WSE)-2 chips measure 46225 mm^(2),56 times the size of a standard Nvidia microprocessor(Fig.1)[2].

关键词： microprocessor Microchip Engine

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人工智能能耗惊人

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Engineering 2024年第1期32卷 7-9页

作者： mitch Leslie Senior Technology Writer

In the month of August 2023,more than 180 million users logged on to ChatGPT(Fig.1)[1],the famous artificial intelligence(AI)chatbot[2].Developed by San Francisco,CA,USA-based OpenAI,ChatGPT can write prose in the style of Ernest Hemingway,generate computer code,help jobseekers craft their resumes,furnish reasonably accurate medical diagnoses,and perform a range of other sophisticated tasks[2-5].People who sign up for the free version of ChatGPT-as well as anyone else accessing the many Al-enhanced search engines and programs that are now available-do not have to pay for the *** it is not actually free.

关键词：人工智能 computer artificial

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