Visual Analog Scales for Assessment of Thermal Perception in Different Environments

Leon, Gloria R.; Koscheyev, Victor S.; Stone, Eric A.

doi:10.3357/asem.2204.2008

Cited by 23 publications

(16 citation statements)

References 7 publications

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“…To familiarise subjects with the procedure, they were given both a verbal orientation and measurement trials for each of the subjective measurements. A separate scale was used for each measurement category at each stage to avoid retrospective contamination of continued measurements during experimental trials (Leon et al 2008). Thermal comfort, heat perception and fatigue were measured at baseline and at completion of each exercise bout.…”

Section: Measurementsmentioning

confidence: 99%

Subjective perceptions and ergonomics evaluation of a liquid cooled garment worn under protective ensemble during an intermittent treadmill exercise

et al. 2011

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While a personal protective equipment (PPE) ensemble effectively provides workers with protection from occupational hazards, working in a vapour-resistant ensemble increases the risk of heat illness/injuries and physiological burdens. The purpose of this study was to investigate the effect of body cooling via a liquid-cooled garment (LCG) underneath a PPE ensemble on perceived thermal strain, physiological responses and ergonomics during an intermittent treadmill exercise in warm environmental conditions. The results of the present study indicated that the concomitant wearing of LCG underneath the PPE ensemble significantly reduced subjective perception of heat and alleviated overall increase in body temperature and heart rate while no impact of wearing LCG on ergonomic features was found. The extension of the present findings to practical applications in occupational settings requires further research on a LCG system design and performance evaluations while the LCG is incorporated within the PPE ensemble. STATEMENT OF RELEVANCE: Implementation of a LCG underneath PPE for body cooling was investigated, focusing on its impact on individuals' perceived thermal strain, physiological responses and ergonomics. The findings of the present study indicated that body cooling via a wearable LCG underneath PPE significantly alleviated both perceived thermal and physiological strain in uncompensable heat stress condition.

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Section: Measurementsmentioning

confidence: 99%

Subjective perceptions and ergonomics evaluation of a liquid cooled garment worn under protective ensemble during an intermittent treadmill exercise

et al. 2011

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“…Although there is an increasing reliance upon VAS as a robust psychometric instrument, 44 the preferred instrument (categorical versus VAS) in terms of sensitivity and validity to assess thirst is not clear, particularly with regard to the population to be studied (e.g., elderly persons, children). Comparison of VAS and categorical scales (or the combination of the two) to assess another related construct (i.e., “thermal” perception) has not yielded definitive answers to date 45 .…”

Section: Thirst: How Do We Measure It?mentioning

confidence: 99%

Thirst and hydration status in everyday life

et al. 2012

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Water is an essential nutrient for all persons; thus, maintaining a chronic state of optimal hydration is recognized to provide health benefits. Fluid balance is maintained via thirst, a feedback-controlled variable, regulated acutely by central and peripheral mechanisms. However, voluntary drinking is also a behavior influenced by numerous social and psychological cues. Therefore, whether "thirst-guided" drinking maintains optimal hydration status is a multifactorial issue. Thirst perception is typically assessed by subjective ratings using either categorical or visual analog scales; however, which instrument yields greater sensitivity to change in hydration status has not been examined. Ratings of thirst perception do not always yield predictable patterns of voluntary drinking following dehydration; therefore, perceived thirst and ad libitum drinking are not equivalent measures of human thirst. The recommendation "drink to thirst" is frequently given to healthy individuals during daily life. However, factors and conditions (e.g., age, disease) that influence thirst should be recognized and probed further.

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“…One type of assessment used 7 to 11-point Likert scales ranging from extremely hot to extremely cold 5-7 . Another type of momentary temperature sensation assessment used visual-analog scales 8,9 . The scales typically address thermal sensation, comfort, or preference, but not subjectively experienced autonomic or behavioral thermoregulatory activity.…”

Section: Introductionmentioning

confidence: 99%

The experienced temperature sensitivity and regulation survey

et al. 2015

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Individuals differ in thermosensitivity, thermoregulation, and zones of thermoneutrality and thermal comfort. Whereas temperature sensing and -effectuating processes occur in part unconsciously and autonomic, awareness of temperature and thermal preferences can affect thermoregulatory behavior as well. Quantification of trait-like individual differences of thermal preferences and experienced temperature sensitivity and regulation is therefore relevant to obtain a complete understanding of human thermophysiology. Whereas several scales have been developed to assess instantaneous appreciation of heat and cold exposure, a comprehensive scale dedicated to assess subjectively experienced autonomic or behavioral thermoregulatory activity has been lacking so far. We constructed a survey that specifically approaches these domains from a trait-like perspective, sampled 240 volunteers across a wide age range, and analyzed the emergent component structure. Participants were asked to report their thermal experiences, captured in 102 questions, on a 7-point bi-directional Likert scale. In a second set of 32 questions, participants were asked to indicate the relative strength of experiences across different body locations. Principal component analyses extracted 21 meaningful dimensions, which were sensitive to sex-differences and age-related changes. The questions were also assessed in a matched sample of 240 people with probable insomnia to evaluate the sensitivity of these dimensions to detect group differences in a case-control design. The dimensions showed marked mean differences between cases and controls. The survey thus has discriminatory value. It can freely be used by anyone interested in studying individual or group differences in thermosensitivity and thermoregulation.

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Visual Analog Scales for Assessment of Thermal Perception in Different Environments

Cited by 23 publications

References 7 publications

Subjective perceptions and ergonomics evaluation of a liquid cooled garment worn under protective ensemble during an intermittent treadmill exercise

Subjective perceptions and ergonomics evaluation of a liquid cooled garment worn under protective ensemble during an intermittent treadmill exercise

Thirst and hydration status in everyday life

The experienced temperature sensitivity and regulation survey

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