Subramanian Senthil Kumar, Sharma Vivek Kumar, Rajendran Rajathi
Department of Physiology, AIIMS, Mangalagiri, Andhra Pradesh, India.
Professor and Head, Government Institute of Medical Sciences, Department of Physiology, Greater Noida, Uttar Pradesh 201310, India.
J Basic Clin Physiol Pharmacol. 2018 Nov 13;30(3):jbcpp-2018-0104. doi: 10.1515/jbcpp-2018-0104.
Background Somatotype is a quantified expression of the morphological conformation of a person in terms of three-numeral rating each representing one component; fat (endomorphy), muscle mass (mesomorphy) and bone length (ectomorphy) in the same order. Certain somatotypes are more prone to develop the particular disease. Obesity and overweight are already epidemic among Indian adolescents and are increasing at an alarming rate, and obesity is linked to cardiovascular (CV) risk in this age group. Identifying the heart rate variability (HRV) is an established non-invasive test to identify the CV risk. The objective of this study is to record the HRV data for each somatotype category and to compare the HRV data among these somatotype categories in adolescents. Methods The volunteer adolescents in the age group of 12-17 years were classified into a different somatotyping categories based on the Heath Carter somatotyping method. The short-term HRV was recorded in all the subjects using wireless BioHarness 3.0. Results Based on the time domain and frequency domain parameters, the parasympathetic activity showed decreasing order as follows: central>ectomorphy>mesomorphy>endomorphy, whereas sympathetic activity showed increasing order as follows: central<ectomorphy<mesomorphy<endomorphy in both boys and girls. Girls have higher parasympathetic activity and lesser sympathetic activity than boys in ectomorphy and mesomorphy. In the central somatotype and endomorphy categories, genders were comparable. Conclusion Our study suggests that endomorphy and mesomorphy have poorer autonomic tone when compared to other somatotype categories.
背景 体型是根据三个数字评分对人的形态结构进行的量化表达，每个数字代表一个组成部分，按相同顺序分别代表脂肪（内胚层体型）、肌肉量（中胚层体型）和骨长度（外胚层体型）。某些体型更容易患特定疾病。肥胖和超重在印度青少年中已呈流行趋势，且以惊人的速度增加，肥胖与该年龄组的心血管（CV）风险相关。识别心率变异性（HRV）是一种确定的用于识别CV风险的非侵入性测试。本研究的目的是记录每个体型类别的HRV数据，并比较青少年中这些体型类别之间的HRV数据。方法 将12 - 17岁年龄组的青少年志愿者根据希思·卡特体型分类法分为不同的体型类别。使用无线BioHarness 3.0记录所有受试者的短期HRV。结果 基于时域和频域参数，副交感神经活动呈如下递减顺序：中间型＞外胚层体型＞中胚层体型＞内胚层体型，而交感神经活动呈如下递增顺序：中间型＜外胚层体型＜中胚层体型＜内胚层体型，在男孩和女孩中均如此。在外胚层体型和中胚层体型中，女孩的副交感神经活动高于男孩，交感神经活动低于男孩。在中间型体型和内胚层体型类别中，性别具有可比性。结论 我们的研究表明，与其他体型类别相比，内胚层体型和中胚层体型的自主神经张力较差。
