Revised Force-Endurance Models for the US Workforce

修订后的美国劳动力力量-耐力模型

• 批准号: 8619728
• 负责人: Lora Anne Cavuoto
• 金额: $ 9.09万
• 依托单位: STATE UNIVERSITY OF NEW YORK AT BUFFALO
• 依托单位国家: 美国
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8619728
• 关键词: Revised; Force; Endurance; Models; US

Project Summary Obesity is a risk factor for workplace injury, and its growing prevalence may be associated with increases in the future incidence and cost of injuries. Although the health consequences of obesity have gained increasing attention, there are still major limitations in what is known regarding the effects of obesity level on work capacity and injury risk. This project will assess obesity-related differences in endurance and fatigue, which will provide useful information for understanding the impact of overweight and obesity on the performance of occupational activities and the subsequent risk of injury, particularly for those tasks requiring static postures that can be limited by fatigue development. In addition, the objective of this work is to provide ergonomics practitioners with revised force-endurance models that can be applied for work design and evaluation. Specific Aim 1 will address the main and interactive effects of obesity level and workload for sustained isometric hand grip, shoulder abduction, and torso extension tasks. Endurance will be evaluated at four levels of relative loading to provide results for an occupationally-relevant range of task demands. To achieve this aim, individuals who are non- obese, overweight, or obese and aged between 25-54 years will be recruited and asked to come in for four experimental sessions. During each session, participants will complete an endurance task for each muscle group at one workload level while endurance time and fatigue- related responses are quantified. With the data collected from Specific Aim 1, revised force- endurance models will be developed in Specific Aim 2. It is hypothesized that higher levels of obesity will be associated with impaired endurance capacity. It is also expected that the existing models are not predictive of endurance time for overweight and obese individuals, limiting their utility in ergonomics practice and requiring revised models to be protective of the muscle capacity of the changing workforce. Results from this research will contribute to understanding the impacts of obesity on the development of muscle fatigue, which is important for discerning the link between personal risk factors, such as obesity, and the risk of workplace injury. Application of the revised models can facilitate improved workplace design and job evaluation to accommodate the capacities of workers who are overweight or obese. Consistent with the National Occupational Research Agenda objectives, the long-term goal of the proposed work is to determine the impact of occupational exposures for the prevention of musculoskeletal disorders and the improvement of worker health.

项目概要 肥胖是工作场所伤害的一个危险因素，其日益流行可能与 未来伤害发生率和成本的增加。尽管对健康的影响 肥胖已引起越来越多的关注，但已知的仍存在重大局限性 关于肥胖水平对工作能力和受伤风险的影响。该项目将评估 肥胖相关的耐力和疲劳差异，这将为以下方面提供有用的信息： 了解超重和肥胖对职业表现的影响 活动和随后受伤的风险，特别是那些需要静态姿势的任务 这可能会受到疲劳发展的限制。此外，这项工作的目标是提供 人体工程学从业者拥有可应用于工作的修订后的力-耐力模型 设计和评估。具体目标 1 将解决肥胖的主要影响和交互影响 持续等距握持、肩部外展和躯干伸展的水平和工作量 任务。耐力将在四个相对负载水平上进行评估，以提供结果 与职业相关的任务要求范围。为了实现这一目标，非个人 年龄在 25-54 岁之间的肥胖、超重或肥胖者将被招募并被要求 参加四次实验。在每次会议期间，参与者将完成一个 每个肌肉群在一个工作负荷水平下的耐力任务，同时耐力时间和疲劳- 相关响应被量化。根据具体目标 1 收集的数据，修订后的力- 耐力模型将在特定目标 2 中开发。假设更高水平的 肥胖与耐力能力受损有关。还预计现有 模型无法预测超重和肥胖个体的耐力时间，限制了他们的耐力 在人体工程学实践中的实用性，并要求修改模型以保护肌肉 不断变化的劳动力的能力。这项研究的结果将有助于理解 肥胖对肌肉疲劳发展的影响，这对于识别肌肉疲劳很重要 肥胖等个人风险因素与工作场所受伤风险之间的联系。 应用修订后的模型可以促进改进工作场所设计和工作评估，以 适应超重或肥胖工人的能力。符合 国家职业研究议程目标，拟议工作的长期目标是 确定职业暴露对预防肌肉骨骼疾病的影响 疾病和工人健康的改善。