Skin temperature thresholds: A novel non-invasive potential tool for estimating ventilatory thresholds

IF 2.9 2区 生物学 Q2 BIOLOGY
Xianxiang Zeng , Chunxue Tang , Yuxiao Deng , Yanyan Zhang , Lijun Shi
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Abstract

Background

Developing non-invasive, practical methods to identify exercise metabolic thresholds remains a key focus in exercise physiology. This study examined the variation patterns of average skin temperature (aTsk) measured by infrared thermography during a ramp incremental exercise test (RIET) and determined skin temperature thresholds (TSKTs) to assess their agreement with ventilatory thresholds (VTs).

Methods

Twenty-three active college students performed a RIET. Physiological parameters including aTsk, oxygen uptake (V˙O2), heart rate (HR), and power output (PO), were recorded. Paired-sample t-tests, Pearson correlation (r), Intraclass Correlation Coefficient (ICC) and Bland-Altman were used to assess the agreement between TSKTs and VTs. The TSKTs comprised the first (TSKT1) and second (TSKT2) skin temperature thresholds.

Results

1) aTsk remained stable initially, then declined (TSKT1), and finally slowed or rebounded (TSKT2). 2) No significant differences were observed between VTs and TSKTs in V˙O2, HR, or PO (P > 0.05). 3) At the levels of absolute V˙O2 (V˙O2ab), relative V˙O2 (V˙O2re), HR and PO, TSKT1 exhibited moderate agreement with VT1, with ICC (0.587, 0.432, 0.430 and 0.525) and r > 0.40 (P < 0.05). TSKT2 showed moderate to high agreement with VT2 for V˙O2ab (ICC: 0.774, r: 0.778) (P < 0.01), V˙O2 re (ICC: 0.433, r: 0.449) (P < 0.05), and PO (ICC: 0.770, r: 0.784) (P < 0.01), while no significant agreement and correlation was found for HR (P > 0.05).

Conclusion

TSKTs identified during RIET exhibited moderate to high reliability in estimating VTs and may serve as a potential tool for VTs assessment.

Abstract Image

皮肤温度阈值:一种估算通气阈值的新型无创潜在工具。
背景:发展无创、实用的方法来识别运动代谢阈值仍然是运动生理学的一个关键焦点。本研究检查了坡道增量运动试验(RIET)期间红外热像仪测量的平均皮肤温度(aTsk)的变化模式,并确定了皮肤温度阈值(tskt),以评估其与通气量阈值(vt)的一致性。方法:23名现役大学生进行RIET测试。生理参数包括aTsk、摄氧量(V˙O2)、心率(HR)和功率输出(PO)。采用配对样本t检验、Pearson相关检验(r)、类内相关系数(ICC)和Bland-Altman来评估tskt和VTs之间的一致性。tskt包括第一(TSKT1)和第二(TSKT2)皮肤温度阈值。结果:1)aTsk初始保持稳定,然后下降(TSKT1),最后减慢或反弹(TSKT2)。2) VTs组和TSKTs组在V˙O2、HR和PO方面无显著差异(P < 0.05)。3)在绝对V˙O2 (V˙O2ab)、相对V˙O2 (V˙O2re)、HR和PO水平上,TSKT1与VT1表现出中等程度的一致性,分别为ICC(0.587、0.432、0.430和0.525)和r > 0.40 (P 2ab (ICC: 0.774, r: 0.778)和P 2re (ICC: 0.433, r: 0.449) (P 0.05)。结论:在RIET中发现的tskt在估计vt方面具有中高的可靠性,可以作为评估vt的潜在工具。
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来源期刊
Journal of thermal biology
Journal of thermal biology 生物-动物学
CiteScore
5.30
自引率
7.40%
发文量
196
审稿时长
14.5 weeks
期刊介绍: The Journal of Thermal Biology publishes articles that advance our knowledge on the ways and mechanisms through which temperature affects man and animals. This includes studies of their responses to these effects and on the ecological consequences. Directly relevant to this theme are: • The mechanisms of thermal limitation, heat and cold injury, and the resistance of organisms to extremes of temperature • The mechanisms involved in acclimation, acclimatization and evolutionary adaptation to temperature • Mechanisms underlying the patterns of hibernation, torpor, dormancy, aestivation and diapause • Effects of temperature on reproduction and development, growth, ageing and life-span • Studies on modelling heat transfer between organisms and their environment • The contributions of temperature to effects of climate change on animal species and man • Studies of conservation biology and physiology related to temperature • Behavioural and physiological regulation of body temperature including its pathophysiology and fever • Medical applications of hypo- and hyperthermia Article types: • Original articles • Review articles
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