Regulation of sensory nerve conduction velocity of human bodies responding to annual temperature variations in natural environments

Abstract

The extensive research interests in environmental temperature can be linked to human productivity/performance as well as comfort and health; while the mechanisms of physiological indices responding to temperature variations remain incompletely understood. This study adopted a physiological sensory nerve conduction velocity (SCV) as a temperature‐sensitive biomarker to explore the thermoregulatory mechanisms of human responding to annual temperatures. The measurements of subjects’ SCV (over 600 samples) were conducted in a naturally ventilated environment over all four seasons. The results showed a positive correlation between SCV and annual temperatures and a Boltzmann model was adopted to depict the S‐shaped trend of SCV with operative temperatures from 5°C to 40°C. The SCV increased linearly with operative temperatures from 14.28°C to 20.5°C and responded sensitively for 10.19°C‐24.59°C, while tended to be stable beyond that. The subjects’ thermal sensations were linearly related to SCV, elaborating the relation between human physiological regulations and subjective thermal perception variations. The findings reveal the body SCV regulatory characteristics in different operative temperature intervals, thereby giving a deeper insight into human autonomic thermoregulation and benefiting for built environment designs, meantime minimizing the temperature‐invoked risks to human health and well‐being.

Reactive Oxygen Species-Responsive Gel-Based Microneedle Patches for Prolonged and Intelligent Psoriasis Management

“…As the minimum-required force to penetrate the SC by a MN is 0.058 N/needle, our MNs provided enough mechanical strength to penetrate the SC layer (Figure j,k). , In addition, the square pyramid needles and a small tip radius (<10 μm) contributed to efficient skin penetration . The mechanical strength of MNs is not influenced by the temperature change of the skin. − The main interaction to ensure a good connection between needles and the base plate were the entanglement and hydrogen bonds between polymer chains within them. , After inserting MNs into the skin for 3 min, the complete separation between the needles and the base was achieved, with no needle left in the residual MN patch (Figure l,m). Also, the micro holes in the skin created by MNs became invisible within 2 h, which demonstrated the minimally invasive of HP-EGCG MNs (Figure S8).…”

Evaluation and modification of the weighting formulas for mean skin temperature of human body in winter conditions

“…Physiological responses of human body were the basic for thermal perception [1][2][3][4]. Mean skin temperature (MST) is one of the most important physiological parameters reflecting the thermal states of the human body [5][6][7][8].…”

Design and performance research on the automatic sweat-treating fabrics used for ski suits

“…Ski athletes have to stay in the ‘wet-cold’ state for a long time during the training process, so it is very important to develop ski suits with good sweat-treating function to protect athletes’ health. 16–27…”

“…Ski athletes have to stay in the 'wet-cold' state for a long time during the training process, so it is very important to develop ski suits with good sweat-treating function to protect athletes' health. [16][17][18][19][20][21][22][23][24][25][26][27] In this study, materials with high moisture absorbing properties were integrated into the fabric of the inner layer of a ski suit through a reasonable design, aiming at developing a kind of ski suit fabric with automatic sweat-treating function. The automatic sweattreating fabrics can effectively delay the time that the ski suit enters a wet-cold state.…”