Saideh Meshgin, Rahman Sheikhhoseini, Ramin Balouchi,
Volume 6, Issue 2 (Journal of Ergonomics 2018)
Abstract
Introduction: People with different ages especially children and teenagers spend most of their free time using electronic entertainments The purpose of this research was studying the relationship between “upper body posture” and physical activity, mental aspects and the use of electronic entertainments.
Materials & Methods: In this cross-sectional study, 160 female students aged 7-12 years old, from 17th district of Tehran were chosen. Tools for collecting information was short-form physical activity measure questionnaire (IPAQ), personal information questionnaire consisting of questions about the amount of time using electronic entertainments, Revised Children’s Manifest Anxiety Scale (RCMAS) and children’s depression inventory (CDI) by Maria Kovacs. Photogrammetric method was applied for measuring forward head and rounded shoulder angle, and a flexible ruler for measuring kyphosis angle. A linear regression test with a %95 level of certainty was used for analysing collected information (P <0.05).
Results: There is a meaningful relationship between depression and anxiety with students’ forward head angle, and depression and electronic entertainments with kyphosis angle (P<0.05). But no meaningful relationship was observed between rounded shoulder angle and mental aspects and physical activity.
Conclusion: A close relationship between psychological factors and upper body posture in female primary school students from Tehran was observed and this issue should be considered while designing preventive and corrective programs.
Elnaz Rajabi Shameli, Rahman Sheikhhoseini, Shakiba Asadi Melerdi,
Volume 7, Issue 3 (Iranian Journal of Ergonomics 2019)
Abstract
Background and Objectives: Musculoskeletal disorders are common in students and several causes may be considered for them. The aim of this study was to investigate the relationship between school furniture dimensions and trunk posture with musculoskeletal disorders in students of the sixth grade of elementary school in Karaj.
Methods: In this cross-sectional study, 346 boy students in sixth grade of elementary school in Karaj were selected. A flexible ruler was used to measure thoracic kyphosis and lumbar lordosis angles. A 50-centimeter metal ruler was used to record ergonomic and anthropometric data of the students. Spearman’s correlation test was run to analyze the collected data at the significant level of 0.05.
Results: The results showed that only 18%, 12% and 50% of desk height, seat depth and seat height measures were at normal ergonomic conditions, respectively. A negative significant correlation was observed between seat depth and total Nordic score (P<0.05).
Conclusion: It seems that school furniture dimensions in sixth grade boy students of elementary school in Karaj were not in acceptable condition. So, we suggest that ergonomics standardization of school furniture should be considered to prevent its possible consequences.
Hosein Hejazifar, Rahman Sheikhhoseini, Hashem Piri, Parisa Sayyadi,
Volume 10, Issue 1 (Iranian Journal of Ergonomics 2022)
Abstract
Objectives: Work-induced musculoskeletal pain disorders are among the most common problems among workers. This study aimed to compare fatigue and trunk and neck postures during work in tailors with and without nonspecific chronic neck pain.
Methods: In this cross-sectional study, 30 sewing machine operators participated voluntarily and were divided in two groups of people with (15 persons) and without (15 persons) chronic nonspecific neck pain. The craniovertebral, cranial, and shoulder angles were calculated three intervals (at the start of work, after 2 hours of continuous work, after 4 hours of continuous work) using the photogrammetric method. Borg scale was used to examine work-induced fatigue. A one-way repeated measure analysis of variance at the significance level of 0.05 was used for data analysis.
Results: There were significant differences in craniovertebral, cranial, and shoulder angle changes (P < 0.001) between the two groups while working. Postural trunk and neck changes were more evident in the nonspecific chronic neck pain group. However, there were no significant differences in terms of fatigue levels between the two groups (P = 0.639).
Conclusion: The upper trunk related posture among workers with nonspecific chronic neck pain may be more negatively affected during work. So it is suggested that maintaining proper posture should be more emphasized among these workers.
