International Journal of Behavioral Nutrition and Physical Activity最新文献

{"title":"From physical activity patterns to cognitive status: development and validation of novel digital biomarkers for cognitive assessment in older adults.","authors":"Ling-Jie Fan, Feng-Yi Wang, Jun-Han Zhao, Jun-Jie Zhang, Yang-An Li, Jia Tang, Tao Lin, Quan Wei","doi":"10.1186/s12966-025-01706-x","DOIUrl":"10.1186/s12966-025-01706-x","url":null,"abstract":"<p><strong>Background: </strong>This study aims to investigate the associations between signal-level physical activity (PA) features derived from wrist accelerometry data and cognitive status in older adults, and to evaluate their potential predictive value when combined with demographics.</p><p><strong>Methods: </strong>We analyzed PA data from 3,363 older adults (NHATS: n = 747; NHANES: n = 2,616), with each participant contributing a complete 3-day continuous activity sequence. We extracted the most relevant PA features associated with cognitive function using feature engineering and recursive feature elimination. Demographic characteristics were also incorporated, and multimodal data fusion was achieved through canonical correlation analysis. We then developed explainable machine learning models, primarily random forest, optimized with hyperparameters, to predict individual cognitive function status.</p><p><strong>Results: </strong>Using recursive feature elimination, we identified the top 20 PA features from each dataset and combined them with demographic features for modeling. The models achieved AUCs of 0.84 and 0.80 for NHATS and NHANES. Change quantiles and FFT coefficients emerged as the consistently top-ranked PA features across datasets, ranking 1st and 2nd respectively in their predictive importance for cognitive function. Models based on the top 10 PA features common to both datasets, along with demographic features, achieved AUCs above 0.8.</p><p><strong>Conclusions: </strong>This study identifies novel time-frequency domain features of physical activity that show robust associations with cognitive status across two independent cohorts. These features, particularly those capturing activity variability and rhythmicity, provide complementary information beyond traditional cumulative PA measures. Based on these findings, we developed a proof-of-concept application that demonstrates the feasibility of translating these PA analytics into practical monitoring tools in real-world settings.</p>","PeriodicalId":50336,"journal":{"name":"International Journal of Behavioral Nutrition and Physical Activity","volume":"22 1","pages":"11"},"PeriodicalIF":5.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11748278/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143015496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of group communication norms on daily steps in a team-based financial incentive mobile phone intervention in Shanghai, China.","authors":"Yingnan Jia, Yingcheng Xiao, Hao Chen, Klaus Gebel, Chengshu Li, Shuangyuan Sun, Qinping Yang, Siyuan Wang, Li Zhang, Jing Wang, Minna Cheng, Dantong Gu, Yan Shi, Ding Ding","doi":"10.1186/s12966-025-01707-w","DOIUrl":"10.1186/s12966-025-01707-w","url":null,"abstract":"<p><strong>Background: </strong>Mobile technology offers great potential for physical activity promotion, especially by facilitating online communication, however, the impact of group communication norms on intervention effectiveness remains unclear. This study aimed to evaluate the effect on daily steps of a team-based social norms-related intervention using a mobile application.</p><p><strong>Methods: </strong>The 13-week quasi-experimental study was conducted in Shanghai, China, from September to November 2019, involving 2,985 employees from 32 worksites. For the intervention group (n = 2,049), participants set a goal of 10,000 steps per day. The teams and individual members would receive points for meeting the daily goal, contributing to team-based rankings and financial rewards for the teams and their members. In addition, the intervention teams created dedicated WeChat groups to facilitate communication, which were also used to collect group chat messages. The communication type in these groups was classified into four types: (1) nudging - encouraging team members to be more active, (2) sharing - exchanging the completion of daily step goals, (3) feedback - providing responses or suggestions to team members, and (4) other -diverse topics that could not be classified otherwise. The control group only tracked their steps online.</p><p><strong>Results: </strong>The weekly average steps of the intervention group increased by 2,523 steps, while the control group increased by 470 steps. In the first 3 weeks of follow-up, the frequency of nudging of 7-18 times/week had a positive cumulative effect on the step counts. Sharing more than 3 times/week had a positive cumulative effect. Over 6 and 13 weeks of follow-up, nudging 19 times/week or more had a positive cumulative effect while sharing and feedback at any frequency negatively affected average weekly steps.</p><p><strong>Conclusions: </strong>Communication types within a team affected team-based step counts in a financial incentive intervention. The team-level social norms related to communications might have different cumulative effects on team-level physical activity. 'nudging' messages had a significant association with the change in individual-level step counts in the medium or long term.</p><p><strong>Trial registration: </strong>Pilot Project of the application of walking incentive technology in occupational groups, 2019, ChiCTR1900023813. Registered 13 June 2019,  https://www.chictr.org.cn/showproj.html?proj=39858 .</p>","PeriodicalId":50336,"journal":{"name":"International Journal of Behavioral Nutrition and Physical Activity","volume":"22 1","pages":"9"},"PeriodicalIF":5.6,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11748593/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143015489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"'It's about collaboration': a whole-systems approach to understanding and promoting movement in Suffolk.","authors":"A J Brinkley, K M Cusimano, P Freeman, R Southall-Edwards, V F Gladwell","doi":"10.1186/s12966-024-01688-2","DOIUrl":"10.1186/s12966-024-01688-2","url":null,"abstract":"<p><strong>Background: </strong>Population-levels of physical activity have remained stagnant for years. Previous approaches to modify behaviour have broadly neglected the importance of whole-systems approaches. Our research aimed to (i) understand, (ii) map, (iii) identify the leverage points, and (iv) develop solutions surrounding participation in physical activity across an English rural county.</p><p><strong>Methods: </strong>A systems-consortium of partners from regional and local government, charities, providers, deliverers, advocacy groups, and health and social care, and public health engaged in our research, which consisted of two-phases. Within Phase 1, we used secondary data, insight-work, a narrative review, participatory workshops, and interviews in a pluralistic style to map the system-representing physical activity. Phase 2 began with an initial analysis using markers from social network analysis and the Action Scales Model. This analysis informed a participatory workshop, to identify leverage points, and develop solutions for change within the county.</p><p><strong>Results: </strong>The systems-map is constructed from biological, financial, and psychological individual factors, interpersonal factors, systems partners, built, natural and social environmental factors, and policy and structural factors. Our initial analysis found 13 leverage points to review within our participatory workshop. When appraised by the group, (i) local governing policies, (ii) shared policies, strategies, vision, and working relationships, (iii) shared facilities (school, sport, community, recreation), and (iv) funding were deemed most important to change. Within group discussions, participants stressed the importance and challenges associated with shared working relationships, a collective vision, and strategy, the role of funding, and management of resources. Actions to leverage change included raising awareness with partners beyond the system, sharing policies, resources, insight, evidence, and capacity, and collaborating to co-produce a collective vision and strategy.</p><p><strong>Conclusions: </strong>Our findings highlight the importance and provide insight into the early phase of a whole-systems approach to promoting physical activity. Our whole-systems approach within Suffolk needs to consider methods to (i) grow and maintain the systems-consortium, (ii) create a sustainable means to map the system and identify leverage points within it, and (iii) monitor and evaluate change.</p>","PeriodicalId":50336,"journal":{"name":"International Journal of Behavioral Nutrition and Physical Activity","volume":"22 1","pages":"7"},"PeriodicalIF":5.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11740498/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143015500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The global, regional, and national burden of type 2 diabetes mellitus attributable to low physical activity from 1990 to 2021: a systematic analysis of the global burden of disease study 2021.","authors":"Jiehua Wei, Luying Fan, Zixuan He, Senmao Zhang, Ying Zhang, Xidi Zhu, Fan Xia, Xinli Song, Lizhang Chen, Zhiyong Zou, Tingting Wang","doi":"10.1186/s12966-025-01709-8","DOIUrl":"10.1186/s12966-025-01709-8","url":null,"abstract":"<p><strong>Background: </strong>Low physical activity (LPA) is a leading risk factor for type 2 diabetes mellitus (T2DM). We examine the temporal and spatial trends in the burden of T2DM attributable to LPA at the global, regional, and country scales.</p><p><strong>Methods: </strong>Data were obtained from the Global Burden of Disease Study 2021. The numbers of deaths and disability-adjusted life years (DALYs) of LPA-related T2DM, and the corresponding age-standardized mortality rate (ASMR) and age-standardized DALYs rate (ASDR) were compared across regions and countries by age, sex, and sociodemographic index (SDI). The annual percentage changes (EAPCs) in the ASMR or ASDR were calculated to quantify temporal trends from 1990 to 2021. We also quantified the relationship between SDI and the ASMR and ASDR of T2DM attributable to LPA.</p><p><strong>Results: </strong>Globally, the number of T2DM deaths and DALYs attributable to LPA were approximately 0.15 million and 5.52 million respectively in 2021, which more than doubled compared to 1990. Over the past 32 years, the global EAPCs of ASMR and ASDR were 0.26 (95% CI: 0.20, 0.31) and 0.97 (95% CI: 0.93, 1.02), respectively. The ASMR or ASDR had a reverse U-shaped relationship with the SDI, with the most severe burden observed in the low-middle and middle SDI regions. The age group older than 60 years had the highest rate of DALYs for LPA-related T2DM in 2021, while the 25-44 age group showed the largest increase between 1990 and 2021.</p><p><strong>Conclusions: </strong>Over the past 32 years, the global burden of LPA-related T2DM has continued to increase at an alarming rate in almost all countries, particularly in regions with low-middle and middle SDI. Substantial increases in national action are urgently needed to target elder populations especially in low-middle and middle SDI regions, and special efforts should be made to promote physical activity in young adults with LPA.</p>","PeriodicalId":50336,"journal":{"name":"International Journal of Behavioral Nutrition and Physical Activity","volume":"22 1","pages":"8"},"PeriodicalIF":5.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11740459/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143015510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative effectiveness of physical activity interventions on cognitive functions in children and adolescents with Neurodevelopmental Disorders: a systematic review and network meta-analysis of randomized controlled trials.","authors":"Ruiyuan Tao, Yijian Yang, Mark Wilson, Jeremy R Chang, Chang Liu, Cindy H P Sit","doi":"10.1186/s12966-024-01702-7","DOIUrl":"10.1186/s12966-024-01702-7","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Background: &lt;/strong&gt;Physical activity (PA) interventions have been shown to yield positive effects on cognitive functions. However, it is unclear which type of PA intervention is the most effective in children and adolescents with Neurodevelopmental Disorders (NDDs). This study aimed to compare the effectiveness of different types of PA interventions on cognitive functions in children and adolescents with NDDs, with additional analyses examining intervention effects across specific NDD types including attention-deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;In this systematic review and network meta-analysis, seven databases (Web of Science, PubMed, Medline, APA PsycINFO, Embase, CINAHL, and SPORTDiscus) for randomized controlled trials from database inception to September 2023 were searched. Randomized controlled trials comparing the effectiveness of PA intervention with any non-pharmacological treatment or control group on cognitive functions in children and adolescents diagnosed with NDDs aged 5-17 years were included. Frequentist network meta-analyses were performed based on standardized mean differences (SMD) using random effects models to examine post-intervention differences in cognitive functions, including attention, memory, and executive functions. Intervention dropout was assessed as a measure of treatment acceptability.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;Thirty-one randomized controlled trials (n = 1,403, mean age 10.0 ± 1.9 years) with 66 arms were included in the network. Mind-body exercise (MBE; SMD = 1.91 for attention; 0.92 for executive functions), exergaming (SMD = 1.58 for attention; 0.97 for memory; 0.94 for executive functions), and multi-component physical activity (MPA; SMD = 0.79 for executive functions) were associated with moderate to substantial cognitive improvements compared with usual care, whereas the effectiveness of aerobic exercise (AE) was non-significant. Exergaming (SMD = 0.78, 95%CI 0.12 to 1.45) and MPA (SMD = 0.64, 95%CI 0.11 to 1.18) were more effective than AE for executive functions. When analyzing specific NDD types, exergaming lost its superiority over usual care for attention and memory in ADHD, nor for executive functions in ASD. Instead, MPA demonstrated significant benefits across these domains and populations. The certainty of evidence for these comparisons was very low to low. No significant differences in acceptability were observed among MBE, exergaming, and MPA.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusions: &lt;/strong&gt;The findings in this study suggest that MBE, exergaming, and MPA were effective interventions for improving domain-specific cognitive functions in children and adolescents with NDDs. AE demonstrated non-significant effectiveness for all outcomes. MBE emerges as particularly advantageous for attention. MPA yielded consistent improvements in memory and executive functions across NDD types. Further high-quality randomized controlled tr","PeriodicalId":50336,"journal":{"name":"International Journal of Behavioral Nutrition and Physical Activity","volume":"22 1","pages":"6"},"PeriodicalIF":5.6,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11731537/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142980368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Late-life physical activity, midlife-to-late-life activity patterns, APOE ε4 genotype, and cognitive impairment among Chinese older adults: a population-based observational study.","authors":"Xunying Zhao, Xueyao Wu, Tianpei Ma, Jinyu Xiao, Xin Chen, Mingshuang Tang, Li Zhang, Tao Zhang, Mengyu Fan, Jiaqiang Liao, Ben Zhang, Xia Jiang, Jiayuan Li","doi":"10.1186/s12966-024-01691-7","DOIUrl":"10.1186/s12966-024-01691-7","url":null,"abstract":"<p><strong>Background: </strong>Although physical activity (PA) has been linked to cognitive health, the nuanced relationships between different dimensions of PA and cognitive impairment remain inconclusive. This study investigated associations between late-life PA levels, midlife-to-late-life activity patterns, and cognitive impairment in Chinese older adults, considering potential moderation by apolipoprotein E (APOE) ε4 genotype.</p><p><strong>Methods: </strong>We analyzed baseline data from 6,899 participants (median age 68 years, 55.78% female) in the West China Health and Aging Cohort study, with 6,575 participants having APOE genotyping data. Late-life PA and midlife-to-late-life activity patterns were assessed using the Global Physical Activity Questionnaire and a standardized question, respectively. Cognitive function was evaluated using the Chinese version of Mini-Mental State Examination. Logistic regression models were used to examine associations.</p><p><strong>Results: </strong>Compared to low PA level, moderate (odds ratio [OR] = 0.74, 95% confidence interval [CI] = 0.55 ~ 0.99) and high PA levels (OR = 0.60, 95%CI = 0.48 ~ 0.75) were associated with lower risk of cognitive impairment. Engaging in work-, transport-, recreation-related, and moderate-intensity PA were each significantly associated with lower cognitive impairment risk. Maintaining activity levels from midlife to late life was associated with lower cognitive impairment risk compared to decreasing levels (OR = 0.75, 95%CI = 0.60 ~ 0.94). These associations were more pronounced in APOE ε4 non-carriers, with an interaction observed between APOE ε4 genotype and recreation-related PA (P-value = 0.04).</p><p><strong>Conclusions: </strong>Our findings underscore the multifaceted benefits of PA in mitigating cognitive impairment risk among older Chinese adults. Public health strategies should focus on promoting overall late-life PA levels, especially moderate-intensity PA, and maintaining activity levels comparable to midlife, with potential for personalized interventions based on genetic risk profiles.</p>","PeriodicalId":50336,"journal":{"name":"International Journal of Behavioral Nutrition and Physical Activity","volume":"22 1","pages":"5"},"PeriodicalIF":5.6,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11720804/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142958256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Taking a partnership approach to embed physical activity in local policy and practice: a Bradford District case study.","authors":"Jennifer Hall, Elliot Lever, Nathan Dawkins, Emma Young, Jamie Crowther, Rachel Williams, John Pickavance, Sally Barber, Andy Daly-Smith, Anna Chalkley","doi":"10.1186/s12966-024-01704-5","DOIUrl":"https://doi.org/10.1186/s12966-024-01704-5","url":null,"abstract":"<p><strong>Background: </strong>Supportive policy is an important component of a whole-systems approach to increasing physical activity and reducing inequalities. There is a growing body of literature surrounding the design and effectiveness of national policy approaches to physical activity, but evidence related to local-level approaches is lacking. The aim of this study was to examine 'what works', and identify factors underpinning change, focused on work to embed physical activity in local policy and practice in Bradford, UK.</p><p><strong>Methods: </strong>A mixed-methods case study approach involved collecting data from cross-sectoral stakeholders directly or indirectly engaged in the physical activity agenda in Bradford over a period of three years (2021-2024). Data collection included focus groups, semi-structured interviews, researcher observations of key workshops and meetings, and surveys at two time-points (December 2021 and January 2024). Qualitative data were analysed using reflexive thematic analysis. Quantitative data were analysed using descriptive and inferential statistics.</p><p><strong>Results: </strong>Four themes were identified which embody conditions that appear to be critical for working towards physical activity being embedded in local policy & practice within the Bradford District. These included: collaboration and sector integration, co-productive working, governance and leadership, and cultivating a learning culture. The process of co-producing a district-wide strategy for physical activity was key to facilitating shared ownership of the physical activity agenda across different levels of the system, and for supporting and maintaining cross-sectoral collaboration. On average, survey respondents connected with four more local organisations in relation to the physical activity agenda in January 2024 than in December 2021.</p><p><strong>Conclusion: </strong>Taking a partnership approach, and fostering a culture of evidence-informed decision making, is key to embedding physical activity into policy and practice at a local level. Investing time to understand the aims and values of each partner, and potential synergies and tensions between them, can support the development of a positive and productive collaboration and, subsequently, more effective whole-system delivery and population-level increases in physical activity.</p>","PeriodicalId":50336,"journal":{"name":"International Journal of Behavioral Nutrition and Physical Activity","volume":"22 1","pages":"3"},"PeriodicalIF":5.6,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11707940/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142958257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From dusk to dawn: examining how adolescents engage with digital media using objective measures of screen time in a repeated measures study.","authors":"Bradley Brosnan, Kim A Meredith-Jones, Jillian J Haszard, Shay-Ruby Wickham, Barbara C Galland, Takiwai Russell-Camp, Rachael W Taylor","doi":"10.1186/s12966-024-01698-0","DOIUrl":"10.1186/s12966-024-01698-0","url":null,"abstract":"<p><strong>Background: </strong>Although evening screen time is thought to impair subsequent sleep, current measures are limited to questionnaires which seem unlikely to accurately assess screen time in youth. Given the ubiquitous nature of digital devices, improving measurement of screen time is required before related health effects can be appropriately determined. The aim of this study was to objectively quantify screen time before sleep using video camera footage.</p><p><strong>Methods: </strong>This repeated-measures observational study in healthy adolescents (11-14 years) from Dunedin, New Zealand measured screen time on four evenings over one week in the home environment from March-December 2021. Wearable and stationary PatrolEyes video cameras captured screen time from two hours before bedtime until sleep and manually coded for device type (phone, tablet, laptop computer, desktop computer, handheld gaming console, gaming console, television and other) and screen activity (watching, listening, reading, educational/creative, browsing, communication, social media, video gaming, multitasking) using a reliable coding schedule (κ ≥ 0.8). Descriptive findings are reported.</p><p><strong>Findings: </strong>Among the 83 participants (mean 12.3 [SD 1.0] years, 42% female, 52% New Zealand European, 37% Māori [indigenous]), 82 used screens in the two hours before bed on 308 of 344 (90%) nights for a mean of 54.4 min (SD 25.5). Televisions (median 37 min, 56% of nights), phones (19 min, 64% nights), and multitasking using multiple devices (19 min, 48% nights) were most commonly used (> 75% of adolescents). Once in bed but before trying to sleep, 58% of adolescents engaged in screen time for 17 (26.3) minutes on 36% of nights. The most common screen activities were watching (32.5%), social media (26.5%) and communication (20.5%). Even after attempting sleep, 32.5% of participants used screens for 8.0 min (median) on 16% of nights, mostly listening on phones.</p><p><strong>Conclusions: </strong>Objective video cameras offer detailed insight into evening screen habits, capturing frequency, content, and duration. Youth frequently engage with screens before bed and throughout the night on a range of activities, despite recommendations to restrict screen time prior to sleep.</p><p><strong>Trial registration: </strong>Australian New Zealand Clinical Trials Registry (anzctr.org.au), AACTRN12621000193875, Registered 23 February 2021, https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=380926&isReview=true .</p>","PeriodicalId":50336,"journal":{"name":"International Journal of Behavioral Nutrition and Physical Activity","volume":"22 1","pages":"4"},"PeriodicalIF":5.6,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11707906/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142958255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A cross-sectional study assessing barriers and facilitators to the sustainability of physical activity and nutrition interventions in early childhood education and care settings.","authors":"Noor Imad, Alix Hall, Nicole Nathan, Adam Shoesmith, Nicole Pearson, Melanie Lum, Alice Grady, Erin Nolan, Serene Yoong","doi":"10.1186/s12966-024-01699-z","DOIUrl":"10.1186/s12966-024-01699-z","url":null,"abstract":"<p><strong>Background: </strong>Effective evidence-based physical activity and nutrition interventions to prevent overweight and obesity and support healthy child development need to be sustained within Early Childhood Education and Care (ECEC) services. Despite this, little is known about factors that influence sustainability of these programs in ECEC settings. Therefore, the aim of this study was to describe the factors related to sustainability of physical activity and nutrition interventions in ECEC settings and examine their association with ECEC service characteristics.</p><p><strong>Methods: </strong>A cross-sectional study was undertaken with a nationally representative sample of 473 Australian ECEC services. Factors related to the sustainability of ECEC-based physical activity and nutrition interventions were assessed using the validated Integrated Measure of PRogram Element SuStainability in Childcare Settings (IMPRESS-C), measuring Outer Contextual Factors, Inner Contextual Factors, Processes and Characteristics of the Intervention domains for interventions that supervisors reported as currently implementing. Participants responded using a 5-point Likert scale, with responses ranging from 1 (completely disagree) to 5 (completely agree). Domain scores were calculated for each service by averaging item responses. Linear regression models between ECEC service characteristics and the IMPRESS-C domains were undertaken.</p><p><strong>Results: </strong>Data from 473 Australian childcare services nationally found that the domains: Processes ( <math><mover><mi>x</mi> <mo>¯</mo></mover> </math> =3.78, SD = 0.64), consisting of partnership/engagement and training/support/supervision; and Outer Contextual Factors ( <math><mover><mi>x</mi> <mo>¯</mo></mover> </math> =3.93, SD = 0.63), including policy and legislation, and socio-political context had the lowest mean scores indicating they may likely be barriers to sustainability. Linear regression analyses revealed no statistically significant associations between examined factors and ECEC service characteristics. There was a statistically significant association between the number of years services delivered their interventions and the Characteristics of the Intervention domain (p = 0.035) suggesting that this domain may influence sustainability of programs.</p><p><strong>Conclusions: </strong>This study suggests that factors related to the Processes and Outer Contextual Factors domains had the lowest scores and as such, strategies to support the sustainability of physical activity and nutrition interventions implemented in ECEC settings may need to consider how to best address these factors.</p>","PeriodicalId":50336,"journal":{"name":"International Journal of Behavioral Nutrition and Physical Activity","volume":"22 1","pages":"2"},"PeriodicalIF":5.6,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11699775/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142928553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Associations between class-level factors and student physical activity during physical education lessons in China.","authors":"Yulan Zhou, Lijuan Wang, Ruzhuan Chen, Bingnan Wang","doi":"10.1186/s12966-024-01703-6","DOIUrl":"10.1186/s12966-024-01703-6","url":null,"abstract":"<p><strong>Background: </strong>The purpose of this study is to explore the association between class-level factors, such as lesson start time, class size, lesson location, PE content, and PE context, and student engagement in moderate-to-vigorous physical activity (MVPA) during PE lessons in both elementary and middle schools.</p><p><strong>Methods: </strong>A total of 284 PE lessons from ten schools in Shanghai, Eastern China, were included in the study. Students' MVPA during PE lessons was recorded using accelerometry, and lesson context was evaluated using the System for Observing Fitness Instruction Time (SOFIT). Mixed linear regression analysis was applied to assess the association between class-level factors and MVPA during elementary and middle school PE lessons.</p><p><strong>Results: </strong>Students in elementary school spent 40.3 ± 8.1% of PE lesson time in MVPA, while middle school students spent 40.5 ± 7.1%. Significant relationships were found between MVPA and class-level factors like lesson location, PE content, and PE context. Specifically, elementary school students recorded a higher percentage of MVPA during lessons with team games, individual games, individual activities, and more time spent on skill practice and game play context. In middle schools, higher MVPA was connected to outdoor lessons, a focus on individual games, and more time devoted to fitness context.</p><p><strong>Conclusions: </strong>Class-level factors may affect students' MVPA differently depending on the school level, and these modifiable factors should be targeted to increase MVPA time in elementary and middle school PE classes. Future studies should investigate ways to modify these factors, strategically plan lesson time across different contexts, and optimizing PE content to boost MVPA in PE lessons.</p>","PeriodicalId":50336,"journal":{"name":"International Journal of Behavioral Nutrition and Physical Activity","volume":"22 1","pages":"1"},"PeriodicalIF":5.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11697472/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142923900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}