The Effect of Fabric Type of Common Iranian Working Clothes on the Induced Cardiac and Physiological Strain Under Heat Stress

Parvari, Rouhollah; Aghaei, Habib Allah; Dehghan, Habibollah; Khademi, Amin; Maracy, Mohammad Reza; Dehghan, Somayeh Farhang

doi:10.1080/19338244.2014.891965

Cited by 15 publications

(10 citation statements)

References 30 publications

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“…Clothing, as an insulator, affects heat transfer processes. Thin, light-colored, and relatively loose-fitting clothing can help the heat loss in hot environments (41). A practical method to control heat strain in hot environments is cooling clothes (cooling vests), produced in late 1950s.…”

Section: Discussionmentioning

confidence: 99%

Provision of an Empirical Model to Estimate the Adaptive Capacity of Workers at Risk of Heat Stress

et al. 2017

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Background: Workers exposed to extreme heat in the workplace may be at risk of various heat related-illnesses. There are different ways to control heat stress in the workplace. Adaptation to heat is a process by which the body can cope with the heat stress and remove the excess heat. Some criteria affect the adaptability parameter. The present study aimed at determining some important criteria for adaptability to heat. Methods: The most important criteria were extracted according to experts' opinions and by Delphi model, their weights were specified by fuzzy analytic hierarchy Process (FAHP), and a model was introduced for adaptability. The weights of criteria determined by FAHP were used for prioritization. Results: The maximum percentage of responses (100%) with the relative weight of 0.063 was allocated to the criterion of administrative control. Engineering controls (86.6%), providing shaded area and special places for rest (70%), and having access to healthy drinking water (60%) were considered as other effective criteria for adaptability. Having a second job, personal protective plans, training programs and suitable working clothes can also affect adaptation to heat. Conclusions: In conclusion, adaptability will enable the workers to work in hotter environments for longer periods. According to obtained percentages and weights, the introduced model can be used to prioritize the suitable measures for improving the adaptability of workers and controlling the heat stress. Developing a heat stress control program and implementing this policy requires the cooperation of all members, especially employees.

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Section: Discussionmentioning

confidence: 99%

Provision of an Empirical Model to Estimate the Adaptive Capacity of Workers at Risk of Heat Stress

et al. 2017

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“…The application should have reflected the load level for various activities, the type of fabric for environmental conditions, physiological responses such as heart rate, temperature, and tension. (18) Previously, there was an example in which an ECG sensor was applied to a shirt, but there was no research that developed a shirt that can acquire accurate ECG information with a specialized design based on the general body shape of men in their 40s. On this point the present study has superiority, and is different to existing studies.…”

Section: Discussionmentioning

confidence: 99%

The Computer Aided Cardiovascular Disease Detection Sensor and Algorithm Using Dry Electrode Based ECG Sensor Integrated Clothes

2018

Sensors and Materials

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The incidence of heart disease increases with age. The typical method of monitoring arrhythmia is to use a body-patch-type sensor with a wet electrode. Even though this sensor is easy to use, it has several disadvantages such as problems caused by wet electrodes in tissues when they are monitored for long periods. Thus, a monitoring sensor integrated into clothes with a dry electrode is proposed. In this study, we develop a smart outdoor shirt equipped with a dry electrode electrocardiogram (ECG) sensor for a cardiac arrhythmia computer-aided diagnosis (CAD) system. The sensor can be inserted into a console close to the chest, charged, used to communicate wirelessly, and connected with a smartphone application. According to experiments, the ECG signals measured by the smart shirt indicated that 97.5 ± 1% of the signals could be measured in an immobile state and at least 85.2 ± 2% of the signals could be measured during movement. In addition, we propose a CAD system for detecting cardiac arrhythmia. It was determined through experiments that the system can detect arrhythmia with an accuracy of 98.2 ± 2%.

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“…Heat stress as one of the harmful physical agents in the workplace can cause fatigue, muscle cramps, heat exhaustion, heat rash and neurological and psychological effects and can reduce work efficiency in hot environments (Mazloumi et al ., ; Monazzam et al ., ). Although in mild and moderate disorders such as muscle cramps and heat exhaustion there is no damage to the body's temperature regulating mechanisms, in heat shock these mechanisms will be impaired and there is even a risk of death (Nybo and Nielsen, ; Parvari et al ., ).…”

Section: Introductionmentioning

confidence: 97%

Offering a model for estimating black globe temperature according to meteorological measurements

Hajizadeh

Dehghan

Golbabaei

et al. 2017

Meteorological Applications

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Black globe temperature (T g ) is one of the most common measurement variables used for assessing heat stress; however, it is usually not reported in meteorological data. This study developed a model to estimate T g based on meteorological measurements, in order to calculate the occupational heat stress index in outdoor workplaces. This descriptive and analytical study was conducted from May to September 2013 in Qom, Iran. Environmental variables such as natural wet-bulb temperature (T nw ), dry-bulb temperature (T a ), solar radiation (SR) and relative humidity (RH) were measured by meteorological instruments in weather stations and T g was measured by a globe thermometer in the same situations at different times. Data were analysed using IBM SPSS16. Independent variables including T nw , T a , SR and RH and the dependent variable T g were introduced to the software, and several regression models were obtained. Finally, a model that had the most appropriate correlation with a significance level of 0.05 was chosen as the best model. The correlation co-efficients between T g and T nw , T a , SR and RH were obtained as 0.84, 0.63, 0.75 and −0.75, respectively. The results showed that T a , SR and RH can justify about 90% of the variation in T g . There was a significant relationship between T g and T a , SR and RH (p < 0.05). The correlation co-efficient between actual and estimated data was 0.95 (p < 0.001). The model obtained can be trusted to estimate the black globe temperature in a hot and dry environment and can be useful in assessing occupational heat stress in outdoor workplaces.

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The Effect of Fabric Type of Common Iranian Working Clothes on the Induced Cardiac and Physiological Strain Under Heat Stress

Cited by 15 publications

References 30 publications

Provision of an Empirical Model to Estimate the Adaptive Capacity of Workers at Risk of Heat Stress

Provision of an Empirical Model to Estimate the Adaptive Capacity of Workers at Risk of Heat Stress

The Computer Aided Cardiovascular Disease Detection Sensor and Algorithm Using Dry Electrode Based ECG Sensor Integrated Clothes

Offering a model for estimating black globe temperature according to meteorological measurements

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