Article
Multidisciplinary Sciences
Tamer M. Khalaf, Mohamed Z. Ramadan, Adham E. Ragab, Mohammed H. Alhaag, Khalil A. AlSharabi
Summary: Handling unknown weights may increase stress and physical demand during manual lifting tasks. Eliminating uncertainty is crucial and can be achieved through self-sensing of the load or disclosing the actual weight.
Review
Medicine, General & Internal
Jun Ren, Tianxiang He, Xin Zhou, Zhiwei Wu, Lingjun Kong
Summary: This study aims to investigate the effects of Tuina in the management of Chronic Fatigue Syndrome through a systematic review and meta-analysis, providing evidence for the treatment of CFS in the future. The conclusions drawn from this review are expected to benefit patients, clinical practitioners, and policy makers.
Article
Engineering, Civil
Song Zhou, Yan Li, Kunkun Fu, Xiaodi Wu
Summary: The paper models fatigue progressive damage in fiber-reinforced composite materials, successfully predicts fatigue life under different layup sequences, and simulates delamination behavior. The proposed fatigue finite element model shows good agreements with experimental data.
THIN-WALLED STRUCTURES
(2021)
Article
Multidisciplinary Sciences
Sergio A. Lemus, Mallory Volz, Eduard Tiozzo, Arlette Perry, Thomas M. Best, Francesco Travascio
Summary: Individuals classified as obese based on body mass index (BMI) make up 27.7% of U.S. workers. These individuals are more prone to work-related injuries. However, work tasks are still designed with the assumption of a general population and normal body weight. This study explores the impact of BMI on physiological stress indicators and finds that clinically elevated BMI individuals experience increased physiological stress levels when performing repetitive manual lifting tasks at recommended weight limits (RWL). Notably, 80% of obese subjects exceeded the safety limit for energy expenditure rate (EER) indicated by the National Institute of Occupational Safety & Health (NIOSH).
Article
Environmental Sciences
Nianli Fang, Chang Zhang, Jian Lv
Summary: Manual material handling tasks may lead to muscle fatigue, with the biceps brachii being the most relaxed muscle and the multifidus being the most easily fatigued muscle during furniture board drilling. It is recommended to maintain a small bending range or even avoid bending during material-handling tasks.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Neurosciences
A. Tabasi, N. P. Brouwer, I. Kingma, W. van Dijk, M. P. de Looze, A. Moya-Esteban, H. van der Kooij, J. H. van Dieen
Summary: This study investigated the effects of back muscle fatigue on the estimation of low-back loads and active low-back moments during lifting. The results showed that muscle fatigue had minimal effect on kinematics and low-back load estimates, while the regression model estimation errors may slightly increase for heavier loads.
JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY
(2023)
Article
Engineering, Industrial
Shahnawaz Anwer, Heng Li, Maxwell Fordjour Antwi-Afari, Waleed Umer, Imran Mehmood, Arnold Yu Lok Wong
Summary: The study found that carrying loads in both hands resulted in better gait symmetry and dynamic balance compared to carrying loads on the shoulder or head. Construction managers/instructors should recommend workers to carry loads in both hands to improve gait symmetry and dynamic balance, reducing the risk of falls.
ENGINEERING CONSTRUCTION AND ARCHITECTURAL MANAGEMENT
(2022)
Article
Sport Sciences
Indy M. K. Ho, Jim T. C. Luk, Jake K. Ngo, Del P. Wong
Summary: This study compared the effects of different intraset rest durations on lifting performance and self-perceived exertion during bench press exercise, showing that longer intraset rest durations can increase successful repetitions and decrease perceived exertion.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2021)
Article
Multidisciplinary Sciences
Kristian Snyder, Brennan Thomas, Ming-Lun Lu, Rashmi Jha, Menekse S. Barim, Marie Hayden, Dwight Werren
Summary: Occupationally-induced back pain is a major cause of decreased productivity in industry. Detecting incorrect lifting techniques can lead to benefits such as lower back injury rates for workers and fewer compensation claims for employers. A novel method using a deep CNN showed higher accuracy in classifying lifting data compared to other methods, and could potentially be adapted for other challenging activities in industrial environments.
Article
Engineering, Mechanical
Wangwen Zhao
Summary: This study investigates the uncertainties in fatigue design of offshore structures and recalibrates the Design Fatigue Factors through a detailed reliability analysis. The results show that the Design Fatigue Factors vary for different environmental conditions while maintaining the same target reliability.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Ergonomics
Victor C. H. Chan, Timothy N. Welsh, David M. Frost, Tyson A. C. Beach
Summary: Untrained observers alter their spine as directed via static images of different lifting techniques, with changes depending on the combination of postural characteristics pictured. Acute changes in lifting mechanics can be elicited via visual observation of pictured techniques, but additional instruction may be needed to attenuate peak lumbar flexion displacements and velocities.
INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS
(2021)
Article
Engineering, Industrial
Cheng-Lung Lee, Shih-Yi Lu, Chang-You Wu
Summary: This study examined the effects of rest period and object load on upper limb muscle strength recovery. The findings suggest that a rest period of 4.5 minutes may be the most efficient for muscle strength recovery. This research provides important data for early intervention strategies to prevent muscle fatigue.
INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS
(2022)
Article
Engineering, Mechanical
Zebang Zheng, Mei Zhan, M. W. Fu
Summary: This paper presents a comprehensive overview of the correlation between size effects (SEs) and fatigue performance in metallic materials. It reviews the recent developments in SEs and their impact on low-cycle fatigue, low-cycle dwell fatigue, high-cycle fatigue, and very-high-cycle fatigue. The paper critically discusses the experimental and numerical methods used to investigate SEs, as well as their advances and limitations. Additionally, it highlights the research gap, key challenges, and prospects for future studies.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Ergonomics
Neda Mahdavi, Javad Faradmal, Iman Dianat, Rashid Heidarimoghadam, Hassan Khotanlou
Summary: Muscle fatigue can lead to musculoskeletal disorders in the long term, but can be managed by understanding the causes. Heavy manual tasks result in increased grip fatigue and strength in the right hand, while light and moderate tasks require balance in both hands, leading to more fatigue in the left hand. Subject height, weight, age, and exposure to vibration have a significant impact on grip force. Future studies should be conducted on larger populations to determine the accurate effects of risk factors on muscle fatigue.
INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS
(2022)
Article
Engineering, Industrial
Nathalie M. C. W. Oomen, Ryan B. Graham, Steven L. Fischer
Summary: This study investigated the variability-fatigue and repeaters-replacers hypotheses in repetitive lifting. The results showed excellent individual consistency in motor variability as fatigue developed, supporting the repeaters-replacers hypothesis. Additionally, associations were found between endurance and baseline effort with lower body variability, providing some support for the variability-fatigue hypothesis.
APPLIED ERGONOMICS
(2023)
