Work-Related Musculoskeletal Disorders and Risk Factors: A Cross-Sectional Study Among Chinese Flight Baggage Handlers

Wang, Jingjing; Cao, Yang; Jin, Xianning; Maimaiti, Nazhakaiti; He, Lihua; Zhang, Zhongbin; Wang, Zhongxu; Zhang, Wei

doi:10.1007/978-3-319-96083-8_28

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…For example, in aviation, airport baggage handlers have lifting, carrying and holding tasks, which are known to induce lumbar disc herniation and lower back pain (LBP) [2][3][4]. Studies have shown that 62.7% of handlers have LBP [5]. Extensive research has demonstrated that back pain, particularly LBP, can substantially diminish the quality of life and impede the ability to carry out activities of daily living (ADL) [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

A Smart, Textile-Driven, Soft Exosuit for Spinal Assistance

Zhu,

Phan,

Sharma

et al. 2023

Sensors

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Work-related musculoskeletal disorders (WMSDs) are often caused by repetitive lifting, making them a significant concern in occupational health. Although wearable assist devices have become the norm for mitigating the risk of back pain, most spinal assist devices still possess a partially rigid structure that impacts the user’s comfort and flexibility. This paper addresses this issue by presenting a smart textile-actuated spine assistance robotic exosuit (SARE), which can conform to the back seamlessly without impeding the user’s movement and is incredibly lightweight. To detect strain on the spine and to control the smart textile automatically, a soft knitting sensor that utilizes fluid pressure as a sensing element is used. Based on the soft knitting hydraulic sensor, the robotic exosuit can also feature the ability of monitoring and rectifying human posture. The SARE is validated experimentally with human subjects (N = 4). Through wearing the SARE in stoop lifting, the peak electromyography (EMG) signals of the lumbar erector spinae are reduced by 22.8% ± 12 for lifting 5 kg weights and 27.1% ± 14 in empty-handed conditions. Moreover, the integrated EMG decreased by 34.7% ± 11.8 for lifting 5 kg weights and 36% ± 13.3 in empty-handed conditions. In summary, the artificial muscle wearable device represents an anatomical solution to reduce the risk of muscle strain, metabolic energy cost and back pain associated with repetitive lifting tasks.

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Section: Introductionmentioning

confidence: 99%

A Smart, Textile-Driven, Soft Exosuit for Spinal Assistance

Zhu,

Phan,

Sharma

et al. 2023

Sensors

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Development of a Smart Textile-Driven Soft Spine Exosuit for Lifting Tasks in Industrial Applications

Zhu,

Sharma,

Phan

et al. 2024

2024 IEEE/SICE International Symposium on System Integration (SII)

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The Impact of Physiological and Psychological Fatigue on Work Efficiency: A Case Study of Parcel Sorting Work

Li,

Ma,

Yan

et al. 2024

Sensors

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The popularity of online shopping in China has increased significantly, creating new development opportunities for the express delivery industry. However, the rapid expansion of the express industry has also created challenges in the parcel sorting process. The demanding nature of parcel sorting work, which is characterized by intense and prolonged repetitive tasks, makes individuals particularly vulnerable to the effects of fatigue. Fatigue is a complex condition that encompasses both physiological and psychological exhaustion. It often results in reduced energy levels and diminished functionality, significantly impacting an individual’s performance at work and their overall well-being. This study aimed to investigate how physiological and psychological fatigue affects sorting efficiency and to identify appropriate rest periods that will allow employees to maintain their performance levels. The research involved fifteen participants who took part in a 60 min continuous sorting experiment and a similar experiment with scheduled breaks. During both trials, we collected data on participants’ electromyography (EMG) and electrodermal activity (EDA), as well as subjective fatigue ratings (RPE). Signal features such as the median frequency (MF) of EMG and the skin conductance level (SCL) were analyzed to assess physiological and psychological fatigue, respectively. The results show that physiological fatigue mainly affects sorting efficiency in the first 30 min, while psychological fatigue becomes more influential in the following half-hour period. In addition, subjective fatigue levels during the first 30 min are primarily determined by psychological factors, while beyond that point, both physiological and psychological fatigue contribute to subjective fatigue. Rest periods of 415–460 s, based on EDA recovery times, effectively support sorting efficiency and participants’ recovery. This study highlights the complex ways in which fatigue affects parcel sorting performance and provides valuable theoretical and practical insights for establishing labor quotas and optimizing work schedules in the parcel sorting industry.

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Work-Related Musculoskeletal Disorders and Risk Factors: A Cross-Sectional Study Among Chinese Flight Baggage Handlers

Cited by 3 publications

References 9 publications

A Smart, Textile-Driven, Soft Exosuit for Spinal Assistance

A Smart, Textile-Driven, Soft Exosuit for Spinal Assistance

Development of a Smart Textile-Driven Soft Spine Exosuit for Lifting Tasks in Industrial Applications

The Impact of Physiological and Psychological Fatigue on Work Efficiency: A Case Study of Parcel Sorting Work

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