## 1 Introduction  
Agriculture, mining, and construction are considered the three major industries that involve high amounts of risk; in the agriculture industry, the severity of agricultural diseases and accidents continues to increase because of the aging agricultural population [1]. Work-related musculoskeletal disorders (WMSDs) have been classified as the most common nonfatal injuries and illnesses in farmers [2; 3; 4]. The International Labour Organization reported that around 160 million work-related illnesses occur per year worldwide, among which WMSDs feature prominently, with extensive occupational health and economic consequences [5]. In Korea, the prevalence of occupational diseases in farmers was 5.0% in 2020. Among these occupational diseases, musculoskeletal disorders (MSDs) occupied approximately 84.6%, followed by circulatory system diseases (3.0%), skin diseases (2.9%), and nervous system diseases (2.1%). Among MSDs, back pain (47.3%) was identified as the most prevalent, followed by knee (27.3%) and shoulder (6.9%) disorders [6]. The WMSD risk factors with the highest priority in agriculture include lifting and carrying heavy loads (>22.5 kg), sustained or repeated full-body bending (stooping), and highly repetitive hand work (clipping and cutting) [2; 7; 8; 9; 10; 11]. Further, some agricultural activities are difficult in terms of not only the physical effort involved but also the duration of the activity, with farmers working for more than 8 h per day and often without adequate rest [7]. In addition, farmers are exposed to extreme weather conditions (low and high temperatures, severe rain, and wind, etc. ), and farm-machinery-related body vibrations and low-frequency noise contribute to spinal pain [12]. Based on these points, it has been postulated that farmers are exposed to a multitude of WMSD risk factors [13]. Based on a literature survey, [PERSON] et al. [14] reported that harvesting (51.9%) was most frequently referred to in the 27 selected investigations, followed by load carrying (11.1%), pruning (7.4%), planting (3.7%), digging (3.7%), peeling (3.7%), sorting (3.7%), and weeding (3.7%) among manual operations that cause WMSDs. Of the risk factors associated with the development of WMSDs, stooping, or prolonged trunk flexion (51.9%), was identified as a risk factor in a majority of the selected papers; repetitive movement (29.6%) was identified as the second most-reported risk factor, followed by age (22.2%), heavy carrying and lifting (14.8%), and gender and kneeling (11.1% each) [14]. Thus, ergonomic interventions for reducing agricultural work-related musculoskeletal loadings, which can help prevent WMSDs in agriculture, are required. To this end, several studies have focused on ergonomic interventions for particular tasks in crop cultivation and not on the overall agricultural work. [PERSON] et al. [15] evaluated an ergonomically designed bag for coffee harvesting. [PERSON] and [PERSON] [16] developed an ergonomic tool for manual harvesting of oranges in hilly regions. Other ergonomic-intervention-related studies include ergo bucket carriers and easy lift [17]; an apple picking bucket [18]; hand-glove materials for farming activities [19]; magnifier inspection, a lift assist system, and a smokeless method for calming bees in apiculture [20]; corrective insoles [21]; ergonomic baskets for tealef plucking [22]; and ergonomic interventions for weeding, weighing beef calves, and growing vegetables [23; 24; 25]. [PERSON] [2] reviewed the extent of MSDs in agriculture and employed a historic perspective on how ergonomic interventions have been used to reduce the health effects of labor-intensive agriculture. Farmers have more knowledge and experience regarding farming tasks, but they are generally not aware that the risk factors involved in their occupations can be addressed with ergonomics [13]. Ergonomic interventions without worker participation are much less likely to be practical or acceptable [26].