Fall events

  • 文章类型: Journal Article
    解决由于潜在的严重影响而导致的准确跌倒事件检测的关键需求,本文介绍了空间信道和池化增强YouOnlyLookOnce版本5小(SCPE-YOLOv5s)模型。跌倒事件由于其变化的尺度和微妙的姿势特征而对检测提出了挑战。为了解决这个问题,SCPE-YOLOv5将空间注意力引入了高效信道注意力(ECA)网络,这显著增强了模型从空间姿态分布中提取特征的能力。此外,该模型将平均池化层集成到空间金字塔池(SPP)网络中,以支持跌倒姿势的多尺度提取。同时,通过将ECA网络纳入SPP,该模型有效地结合了全局和局部特征,进一步增强了特征提取。本文在公共数据集上验证了SCPE-YOLOv5,证明它达到了88.29%的平均精度,表现优于你只看一次版本5小4.87%。此外,该模型实现每秒57.4帧。因此,SCPE-YOLOv5s为跌倒事件检测提供了一种新颖的解决方案。
    Addressing the critical need for accurate fall event detection due to their potentially severe impacts, this paper introduces the Spatial Channel and Pooling Enhanced You Only Look Once version 5 small (SCPE-YOLOv5s) model. Fall events pose a challenge for detection due to their varying scales and subtle pose features. To address this problem, SCPE-YOLOv5s introduces spatial attention to the Efficient Channel Attention (ECA) network, which significantly enhances the model\'s ability to extract features from spatial pose distribution. Moreover, the model integrates average pooling layers into the Spatial Pyramid Pooling (SPP) network to support the multi-scale extraction of fall poses. Meanwhile, by incorporating the ECA network into SPP, the model effectively combines global and local features to further enhance the feature extraction. This paper validates the SCPE-YOLOv5s on a public dataset, demonstrating that it achieves a mean Average Precision of 88.29 %, outperforming the You Only Look Once version 5 small by 4.87 %. Additionally, the model achieves 57.4 frames per second. Therefore, SCPE-YOLOv5s provides a novel solution for fall event detection.
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  • 文章类型: Journal Article
    Falls, which are prevalent among older adults, may not only cause severe physical injuries, but also lead to low fall self-efficacy (FSE). Low FSE is associated with restricted activity, which putatively increases risk of future falls. However, emerging studies have failed to confirm this association. Furthermore, the interplay between age, gender, and fall history with falls has not been adequately addressed in adults aged 70 years or older. The aims of this secondary analysis were to: (1) prospectively explore the association of FSE and fall events considering age, gender, and fall history, and (2) examine the characteristics of fall events and fall-related outcomes. Forty-seven community-dwelling adults over 70 years of age were followed for about 12 months. During the follow-up, 22 participants with low FSE experienced 119 fall events whereas 25 participants with high FSE reported 106 fall events. Among fallers, 72.3% (n = 34) experienced recurrent fall events. About 15.0% (n = 34) of 225 fall events resulted in injuries and 4.0% of injuries required medical care. FSE was a statistically significant predictor of future fall events (incident rate ratio = 0.96, p = .013) regardless of age, gender, and fall history. Participants with low FSE were more likely than those with high FSE to fall more frequently without noticeable prodromal symptoms and apparent reasons. These findings suggest that FSE is an important protective factor against future fall events. However, interpretation of these results requires caution given the small sample size and effect size.
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  • 文章类型: Journal Article
    背景:瀑布对主动衰老提出了重大挑战,但是邻里因素与跌倒之间的关系却知之甚少。这项研究考察了跌倒事件与邻里因素之间的关系,包括邻里社会凝聚力(归属感,信任,友善,和乐于助人)和物理环境(故意破坏/涂鸦,垃圾,空置/废弃的房子,并在晚上回家时感到安全)。方法:对健康与退休研究(HRS)的四个两年期(2006-2012年)的9259名参与者的数据进行了分析,美国65岁及以上成年人的全国代表性样本。结果:在调整人口统计学和健康相关协变量的模型中,社区社会凝聚力的一个单位增加与经历一次跌倒的几率降低4%(比值比(OR):0.96,95%置信区间(CI):0.93~0.99)和经历多次跌倒的几率降低6%(OR:0.94,95%CI:0.90~0.98)相关.在调整后的模型中,物理环境量表的一个单位增加与经历单次跌倒的几率降低4%(OR:0.96,95%CI:0.93-0.99)和经历多次跌倒的几率降低5%(OR:0.95,95%CI:0.91-1.00)相关。结论:物理和社会邻里环境可能会影响社区居住老年人的跌倒风险。研究结果支持在社区和临床环境中持续需要基于证据的跌倒预防计划。
    Background: Falls present a major challenge to active aging, but the relationship between neighborhood factors and falls is poorly understood. This study examined the relationship between fall events and neighborhood factors, including neighborhood social cohesion (sense of belonging, trust, friendliness, and helpfulness) and physical environment (vandalism/graffiti, rubbish, vacant/deserted houses, and perceived safety walking home at night). Methods: Data were analyzed from 9259 participants over four biennial waves (2006-2012) of the Health and Retirement Study (HRS), a nationally representative sample of adults aged 65 and older in the United States. Results: In models adjusting for demographic and health-related covariates, a one-unit increase in neighborhood social cohesion was associated with 4% lower odds of experiencing a single fall (odds ratio (OR): 0.96, 95% confidence interval (CI): 0.93-0.99) and 6% lower odds of experiencing multiple falls (OR: 0.94, 95% CI: 0.90-0.98). A one-unit increase in the physical environment scale was associated with 4% lower odds of experiencing a single fall (OR: 0.96, 95% CI: 0.93-0.99) and with 5% lower odds of experiencing multiple falls (OR: 0.95, 95% CI: 0.91-1.00) in adjusted models. Conclusions: The physical and social neighborhood environment may affect fall risk among community-dwelling older adults. Findings support the ongoing need for evidence-based fall prevention programming in community and clinical settings.
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  • 文章类型: Journal Article
    OBJECTIVE: To obtain insight into what kind of monitoring technologies exist to monitor activity in-home, what the characteristics and aims of applying these technologies are, what kind of research has been conducted on their effects and what kind of outcomes are reported.
    METHODS: A systematic document search was conducted within the scientific databases Pubmed, Embase, Cochrane, PsycINFO and Cinahl, complemented by Google Scholar. Documents were included in this review if they reported on monitoring technologies that detect activities of daily living (ADL) or significant events, e.g. falls, of elderly people in-home, with the aim of prolonging independent living.
    RESULTS: Five main types of monitoring technologies were identified: PIR motion sensors, body-worn sensors, pressure sensors, video monitoring and sound recognition. In addition, multicomponent technologies and smart home technologies were identified. Research into the use of monitoring technologies is widespread, but in its infancy, consisting mainly of small-scale studies and including few longitudinal studies.
    CONCLUSIONS: Monitoring technology is a promising field, with applications to the long-term care of elderly persons. However, monitoring technologies have to be brought to the next level, with longitudinal studies that evaluate their (cost-) effectiveness to demonstrate the potential to prolong independent living of elderly persons. [Box: see text].
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