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Dynamic Analytical and Experimental Study of Wearable Thermoelectric Devices for Thermal Tactile Feedback.

Thermal tactile perception plays a crucial role in enhancing realism and immersion in human-machine interaction, virtual/augmented reality, and wearable systems. By exploiting the thermoelectric effect to achieve precisely controllable heating and cooling, wearable thermoelectric devices (WTEDs) offer an effective approach for generating localized and programmable thermal sensations, which calls for a clear understanding of skin temperature regulation mechanisms. In this work, a dynamic thermal conduction model is developed for a skin-WTED integrated system incorporating a nickel foam-reinforc…

Physiological and thermoregulatory effects of oral taurine supplementation on exercise tolerance during forced convective cooling.

AbstractWe investigated the effects of taurine supplementation on cycling time to exhaustion in cold conditions. Eleven males cycled to exha … .6 min, P = 0.061, d = 0.27). There were no effects (P > 0.05) of taurine on core temperature, mean skin temperature or local sweat rates. However, the placebo condition showed greater (P < 0.05) reductions in arm-to-finger temperature gradient (i.e. vasodilation) across pre-exercise passive cold exposure and increased CHO oxidation (P < 0.05). Participants also r …

Temperature regulates bacterial protein production: possible role in rosacea.

Facial skin temperature is higher for patients with rosacea. Papules and pustules might arise because bacteria behave differently at these warmer temperatures. We sought to: (1) compare bacteria from facial skin of patients with rosacea with that of control subjects; and (2) grow these bacteria at 30 degrees C and 37 degrees C to compare growth curves and secreted proteins. Bacteria isolated from pustules/skin surfaces of patients with rosacea and skin surfaces of control subjects were identified and cultured at 37 degrees C and 30 degrees C. Secreted proteins were separated by electrophoresis…

[Telethermographic studies on the effect of immunoglobulins (Beriglobin) on heat radiation behavior in radiodermatitis].

BACKGROUND: Immunoglobulines are supposed to have a soothing effect on the degree of dermatitides and mucositides caused by irradiation. Res … jections. RESULTS: Patients who received immunoglobuline injections showed no differences in their skin temperature progress in comparison with the control group (Table 1, Figure 1). Skin temperature at the beginning as well as temperature progress during treatment and temperature at the end of treatment were identical in both groups. Also the relative temperatur …

A reappraisal of the use of infrared thermal image analysis in medicine.

Infrared thermal imaging of the skin has been used for several decades to monitor the temperature distribution of human skin. Abnormalities such as malignancies, inflammation, and infection cause localized increases in temperature which show as hot spots or as asymmetrical patterns in an infrared thermogram. Even though it is nonspecific, infrared thermology is a powerful detector of problems that affect a patient's physiology. While the use of infrared imaging is increasing in many industrial and security applications, it has declined in medicine probably because of the continued reliance on

Estimation of regional cutaneous cold sensitivity by analysis of the gasping response.

Regional cutaneous sensitivity to cooling was assessed in males by separately immersing four discrete skin regions in cold water (15 degrees C) during head-out immersion. The response measured was gasping at the onset of immersion; the gasping response appears to be the result of a nonthermoregulatory neurogenic drive from cutaneous cold receptors. Subjects of similar body proportions wore a neoprene "dry" suit modified to allow exposure to the water of either the arms, upper torso, lower torso, or legs, while keeping the unexposed skin regions thermoneutral. Each subject was immersed to the s

Evaluating the Time of Maximal Vasoconstrictive Effect of Epinephrine in Facelift Surgery.

BACKGROUND: It remains unclear how long a plastic surgeon should wait for the optimal vasoconstrictive effect of epinephrine as local anesthetic before incision for aesthetic facial surgery. OBJECTIVES: In this study we investigate the optimal timing for epinephrine-induced vasoconstriction in facelift procedures by measuring cheek skin temperature changes with forward-looking infrared thermography (FLIR). METHODS: A retrospective chart review was conducted on all patients who underwent facelift surgery by J.E.Z. between July 2023 and June 2024. Skin surface temperature was recorded at basel…

Rewarming index of the lower leg assessed by infrared thermography in adolescents with type 1 diabetes mellitus.

The aim of this study was to determine whether infrared thermography before and after challenge of the lower leg in cold water may be a useful tool to detect abnormalities in skin blood flow in adolescent asymptomatic patients with type 1 diabetes mellitus (DM1) and to assess the optimal setting of skin temperature measurements. Twenty-five adolescents (10 female, 15 male, mean age 21.2 +/- 6.2 years, body mass index [BMI] 23.0 +/- 2.1 kg/m2) with a duration of DMI of 13.8 +/- 5.4 years and mean HbA1c levels 8.5 +/- 1.3% were compared to age- and sex-matched controls (BMI 22.9 +/- 2.2 kg/m2). …

Blistering time as a parameter for the strength of dermoepidermal adhesion: a systematic review and meta-analysis.

Skin ageing is associated with a flattening of the dermoepidermal junction and a less effective anchoring system, predisposing to bulla form … to -300), resulting in a median blistering time of 75 min (IQR 48-120). In the multivariate model, skin temperature and age were the strongest predictors for suction blistering time (P < 0·001, R(2) adjusted  = 0·707). This strong association between temperature and suction blistering indicates that the dermoepidermal junction loses its strength with increasing s …

Effect of calcium channel blockade on skin blood flow in diabetic hypertension: a comparison of isradipine and atenolol.

In previous studies, using laser Doppler techniques, the authors have demonstrated a duration-dependent reduction in skin blood flow reserve … onhypertensive patients. There was no difference in skin blood flow between the two groups at basal skin temperature or at a controlled temperature of 35 degrees C. Both atenolol and isradipine successfully lowered blood pressure in the study patients. There was a slightly greater decrease in systolic blood pressure with isradipine and a greater decrease in heart …

Oscillatory dynamics within fronto-insular-parietal networks integrate thermosensory signals into body ownership.

Cutaneous thermosensory signals are linked to survival and homeostatic regulation, yet their relationship with higher order cognitive functions remains poorly understood. Emerging evidence suggests that skin temperature is associated with body ownership-the sense that a body and its parts belong to oneself-but the oscillatory basis of this relationship in healthy individuals is unknown. We combined a multisensory illusion paradigm with thermal imaging and electroencephalography to investigate the oscillatory correlates of skin-temperature changes during experimentally induced changes in body o…

На пути к изоляции восприятия и физиологических факторов, способствующих тепловой чувствительности при множественном склерозе: осмысления из новой экспериментальной модели.

ЦЕЛЬ: Определение того, смягчают ли снижение теплового ощущения всего кузова при локальном охлаждении кожи, вызванное теплотворным эффектом, визуальное обесценение у людей с множественным склерозом (MS), оптическим невритом и симптомами, чувствительными к воздействию тепла, независимо от повышения температуры ядра.МЕТОДЫ: Thirteen Участники7 :: повторное выделение эмиссий MS (MS) пациентами с односторонним (левым) оптическим невритом и симптомами, чувствительными к воздействию тепла; 6 Проведено визуальное испытание на эффективность каждого глаза на исходном уровне и при пассивном нагревании (

Совпадение в аннотации оригинала
PURPOSE: To determine if reductions in whole-body thermal sensation (WBTS) with localised skin cooling mitigate heat-induced visual performa … chieved suggests the localised skin cooling was insufficient to meaningfully isolate the effects of skin temperature from core temperature.

Diagnostic accuracy of thermal, hydration, and heart rate assessments in discriminating positive acute kidney injury risk following physical work in the heat.

Occupational heat stress increases the risk of acute kidney injury (AKI). This study presents a secondary analysis to generate novel hypothe … aximum heart rate and heart rate reserve had poor discrimination (AUC = 0.66-0.69, p ≤ 0.051). Mean skin temperature, percent change in body mass and plasma volume, and serum sodium and osmolality had no discrimination (p ≥ 0.072). A peak increase in mean skin temperature of >4.7 °C had a positive likelihood ratio of 11.0 which suggests clinical significance. Thes …

Influence of environmental temperature on chest compression quality and rescuer physiological responses.

OBJECTIVES: Performing chest compressions in high-temperature environments may increase the physiological strain on rescuers, potentially affecting the quality of cardiopulmonary resuscitation (CPR). This study aimed to examine the effects of environmental temperature on physiological responses, perceived exertion, and chest compression performance. METHODS: Twenty male participants performed 10 minutes of chest compressions under 2 temperature conditions: 35°C (HOT) and 25°C (CON). Physiological parameters, including rectal temperature (Tre), skin temperature, heart rate (HR), and rating of …

Noninvasive Thermographic Photographing as an Assessment of the State of Discomfort in a Dog Receiving Radiation Therapy.

In humans, radiation induces dilation of capillaries and inflammatory reactions to raise skin temperature. Thermography is used to detect abnormalities after radiation therapy (RT). However, in veterinary nursing, objective evaluation of the condition of dogs after RT using thermography has not been reported. We investigated the nasal irradiation temperature, behavioral changes, and post-irradiation pain scores in a dog receiving RT for intranasal tumors. The temperature of the nasal planum gradually increased after irradiation, reaching a significantly higher value at 120-240 min. The highest…

Hypothermia during umbilical catheterization in preterm infants.

Objective: To describe the effect of umbilical catheterization (UC) on skin temperature and cardiorespiratory status in preterm infants.Materials and methods: In a prospective observational study of infants <32 weeks of gestation, the duration of UC, course of skin temperature, and cardiorespiratory status were registered. Hypothermia was defined as a temperature below 36.5 °C.Results: UC was performed in 55 infants with a median (range) gestational age of 28 weeks (24-31) and birth weight of 1120 g (625-2091). Mean (SD) temperature first decreased 0.6 (0.6)°C during UC followed by a rise of 0…

The efficacy of cooling with phase change material for the treatment of exercise-induced muscle damage: pilot study.

Post-exercise cryotherapy treatments are typically short duration interventions. This study examined the efficacy of prolonged cooling using phase change material (PCM) on strength loss and pain after eccentric exercise. Eight adults performed 120 bilateral eccentric quadriceps contractions (90% MVC). Immediately afterwards, frozen PCM packs (15°C) were placed over the quadriceps, with room temperature PCM packs on the contralateral quadriceps. Skin temperature was recorded continually (6 h PCM application). Isometric quadriceps strength and soreness were assessed before, 24, 48, 72 and 96 h p…

Impact of skin tone, environmental, and technical factors on thermal imaging.

BACKGROUND: Erythema, an early visual indicator of tissue damage preceding pressure injuries (PrIs), presents as redness in light skin tones but is harder to detect in dark skin tones. While thermography shows promise for early PrI detection, validation across different skin tones remains limited. Furthermore, most protocols and models have been developed under highly controlled conditions. OBJECTIVE: To evaluate how environmental and technical factors (i.e., patient positioning, lighting, distance, camera type) and skin tone impact thermal imaging measurements and temperature change. METHOD

Plantar infrared thermography measurements and low back pain intensity.

OBJECTIVE: To study the skin temperature disorders in low back pain (LBP) patients compared with reference persons without LBP and to evaluate the relationship between pain intensity and other clinical signs and temperature abnormalities. METHODS: Sixty-five patients with unilateral chronic LBP with or without referred nonradicular leg pain (29 men and 36 women; age range, 30-51 years) and 20 reference persons without LBP (7 men and 13 women; age range, 30-49 years) participated in this study. The pain level was recorded by the use of a visual analog scale (0-100). Questionnaires and a series…

Hotspots: Adherence in home foot temperature monitoring interventions for at-risk feet with diabetes-A narrative review.

BACKGROUND: Home foot temperature monitoring (HFTM) is recommended for those at moderate to high ulcer risk. Where a > 2.2°C difference in temperature between feet (hotspot) is detected, it is suggested that individuals (1) notify a healthcare professional (HCP); (2) reduce daily steps by 50%. We assess adherence to this and HFTM upon detecting a recurrent hotspot. METHODS: PubMed and Google Scholar were searched until 9 June 2023 for English-language peer-reviewed HFTM studies which reported adherence to HFTM, daily step reduction or HCP hotspot notification. The search returned 1030 results