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Showing 2 results for Ghanbary Sartang
Validating the perceptual strain index for the evaluation of heat strain under hot laboratory conditions
Habibollah Dehghan, Aioob Ghanbary Sartang,
Volume 2, Issue 4 (Journal of Ergonomics 2015)
Abstract
 

Introduction: The incidence of heat stress is one of the most common problems in work environments as well as many different industries. The exposure of workers to heat results in heat strain. The purpose of the present study was to validate the Perceptual Strain Index through determining its relationship to the Physiological Strain Index and the Wet Bulb Globe Temperature Index under hot laboratory conditions.

Materials and Methods: The present cross-sectional study was conducted on 15 men in five different temperature conditions (21, 24, 27, 30 and 35ºC) in a climate chamber and on the treadmill with three different activity levels –light (2.4km/h), medium (4.8km/h) and heavy (6.3km/h). Participants' heart rate and oral temperature were measured in order to calculate the Physiological Strain Index, and their thermal sensation and the rate of perceived exerted activity were measured for calculating the Perceptual Strain Index. The correlations between the indices were then evaluated using Pearson's correlation test and the regression analysis.

Results: Pearson's correlation test showed a significant correlation between the Perceptual Strain Index and the Physiological Strain Index (P=0.001 and r=0.94). The Perceptual Strain Index was also found to have a significant correlation with oral temperature and heart rate (p=0.001 and r=0.78 (p=0.001 and r=0.90). In addition, a significant correlation was found between the Perceptual Strain Index and the Wet Bulb Globe Temperature Index (p=0.001 and r=0.71) however, no relationship was observed between the Perceptual Strain Index and the Body Mass Index (p=0.79 and r=0.0009).

Conclusion: The findings of the study showed that the Perceptual Strain Index can be used for evaluating heat strain in the absence of access to other methods of evaluating heat stress as it has an acceptable correlation with valid indices of heat stress.

 
A Narrative Review of the Role of Green Ergonomics and Ecological Ergonomics in Achieving Zero Waste.
Ayoub Ghanbary Sartang, Negar Safarpour Khotbesara, Zahra Rahimi, Mahboubeh Abedi, Hojatollah Hossainian, Mohsen Poursadeghiyan,
Volume 14, Issue 1 (Iranian Journal of Ergonomics-In Press 2026)
Abstract
Background and Objectives: This study, based on the DIN 91436 standard framework, examines the role of new approaches in realizing sustainable waste management systems and reducing negative environmental impacts.

Materials and Methods: This review study was conducted through a systematic search of international databases (PubMed, Google Scholar, Scopus, ScienceDirect, and Web of Science) and Persian databases (SID, Magiran, IranMedex, and IranDoc) for articles published from 1990 to 2025. The search strategy included a combination of keywords and articles were selected based on inclusion and exclusion criteria, and then the extracted data were categorized and clarified through thematic analysis.

Results: According to studies, green ergonomics is effective through sustainable design of products and processes, reducing waste at source, and increasing recycling and is in line with the prevention stage within the framework of the DIN 91436 standard. Also, by analyzing human-environment interactions, Ergoecology provides a systematic framework for achieving zero waste with an emphasis on technical, social, and environmental dimensions. By combining these two approaches within the framework of the aforementioned standard, an effective path towards a circular economy and sustainable waste management is mapped out, while investigations of chemists, consist of some materials or methods that can be degraded and damage environment overall and are in contrast with zero waste.

Conclusion: Varity of experimental sciences, researches and technologies finally tag various damages to environment that some of them debated in this study. Achieving zero waste requires the integration of the three main pillars of green ergonomics, ergo-ecology, and the implementation framework of the DIN 91436 standard. This integration not only reduces waste and conserves resources, but also promotes human health and environmental sustainability. To institutionalize this approach, it is necessary to expand interdisciplinary research, incorporate its principles into policymaking, and invest in education and culture among all stakeholders.
 

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