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.

项目摘要 肥胖是工作场所受伤的危险因素，其越来越多的患病率可能与 未来的发病率和受伤成本增加。虽然健康后果 肥胖引起了人们的关注，仍然存在重大局限性 关于肥胖水平对工作能力和伤害风险的影响。该项目将评估 与肥胖相关的耐力和疲劳差异，这将为 了解超重和肥胖对职业表现的影响 活动和随后的伤害风险，特别是对于那些需要静态姿势的任务 这可以受到疲劳发展的限制。此外，这项工作的目的是提供 具有修订的力耐用模型的人体工程学从业人员可以申请工作 设计和评估。特定目标1将解决肥胖的主要和互动效果 水平和工作量，用于持续的等距手抓地力，肩部绑架和躯干扩展 任务。耐力将以相对负载的四个级别进行评估，以提供结果 与职业相关的任务需求。为了实现这一目标，非个人 肥胖，超重或肥胖，年龄在25-54岁之间，将被招募并被要求 参加四次实验会议。在每个会议期间，参与者将完成 每个肌肉组的耐力任务在一个工作量水平上，而耐力时间和疲劳 - 相关响应被量化。通过从特定目标1收集的数据，修订的力 - 耐力模型将在特定目标2中开发。假设较高的水平 肥胖症将与耐力受损相关。还期望现有 模型不能预测超重和肥胖个人的耐力时间，从而限制了他们 人体工程学实践中的实用程序，并要求修订的模型保护肌肉 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，这对于辨别很重要 个人危险因素（例如肥胖症）与工作场所伤害的风险之间的联系。 修订后的模型的应用可以促进改进的工作场所设计和工作评估 容纳超重或肥胖的工人的能力。与 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的影响 疾病和改善工人健康。