Relationship between running economy and mechanical characteristics of triceps surae assessed with tensiomyography

IF 0.9 4区医学 Q4 REHABILITATION

Kinesiology Pub Date : 2020-12-11 DOI:10.26582/K.52.2.12

Diego Moreno-Pérez, Á. López-Samanés, Aitor Centeno, J. Esteve-Lanao, I. Diez-Vega

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引用次数: 2

Abstract

Tensiomyography (TMG) is a non-invasive technique commonly used for evaluating muscle properties in highly trained athletes. The aim of our study was to evaluate the mechanical characteristics of m. triceps surae in competitive runners through TMG measurement and analyze if there was a relationship with running economy (RE). Nine male runners completed the study (mean±SD: age 40.4±9.0 years, body height 176.2±4.9 cm, body mass 70.7±9.4 kg, 10-km time 39.8±5.9 min, VO2peak 56.9 ± 6.5 mL kg-1 min-1). Each subject visited the lab on two occasions with 72h of rest between the trials. On the first day, an incremental test was performed to determine their ventilatory thresholds and peak oxygen consumption. On the second day, RE was evaluated on a treadmill at the velocity of their first ventilatory threshold (VT1), and mechanical characteristics of the soleus and gastrocnemius muscles were analyzed with TMG. Significant differences were found between the economic and non-economic runners in m. soleus in delayed time (Td), contraction time (Tc), and maximal radial displacement of the muscle belly (Dm). Also, significant differences were found in contraction time (Tc) in medium calf (MC) and in half relaxation time (Tr) in lateral twin (LT). The main finding of our study was that the runners with better RE showed greater stiffness in the triceps surae muscles, an aspect that seems to be associated with better performance in athlete runners.Key words: running economy (RE), tensiomyography (TMG), m. triceps surae, m. gastrocnemius, m. soleus

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用张力肌图评价跑步经济性与肱三头肌表面力学特性的关系

腱肌造影术（TMG）是一种非侵入性技术，通常用于评估训练有素的运动员的肌肉特性。本研究的目的是通过TMG测量来评估竞技跑者腓肠肌的力学特性，并分析其是否与跑步经济性（RE）有关。9名男性跑步者完成了这项研究（平均值±标准差：年龄40.4±9.0岁，身高176.2±4.9厘米，体重70.7±9.4公斤，10公里时间39.8±5.9分钟，VO2峰值56.9±6.5毫升公斤-分钟-1）。每个受试者两次访问实验室，两次试验之间休息72小时。第一天，进行了增量测试，以确定他们的通气阈值和峰值耗氧量。第二天，在跑步机上以第一通气阈值（VT1）的速度评估RE，并用TMG分析比目鱼肌和腓肠肌的力学特性。在比目鱼肌中，经济型和非经济型跑步者在延迟时间（Td）、收缩时间（Tc）和肌腹最大径向位移（Dm）方面存在显著差异。此外，中小腿（MC）的收缩时间（Tc）和侧双胞胎（LT）的半松弛时间（Tr）也存在显著差异。我们研究的主要发现是，RE较好的跑步者表现出更大的腓肠三头肌硬度，这似乎与运动员跑步者的更好表现有关。关键词：跑步经济（RE）、张力肌描记术（TMG）、腓肠肌、腓肠肌和比目鱼肌

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Kinesiology REHABILITATION-SPORT SCIENCES

CiteScore

1.90

自引率

8.30%

发文量

审稿时长

>12 weeks

期刊介绍： Kinesiology – International Journal of Fundamental and Applied Kinesiology (print ISSN 1331- 1441, online ISSN 1848-638X) publishes twice a year scientific papers and other written material from kinesiology (a scientific discipline which investigates art and science of human movement; in the meaning and scope close to the idiom “sport sciences”) and other adjacent human sciences focused on sport and exercise, primarily from anthropology (biological and cultural alike), medicine, sociology, psychology, natural sciences and mathematics applied to sport in its broadest sense, history, and others. Contributions of high scientific interest, including also results of theoretical analyses and their practical application in physical education, sport, physical recreation and kinesitherapy, are accepted for publication. The following sections define the scope of the journal: Sport and sports activities, Physical education, Recreation/leisure, Kinesiological anthropology, Training methods, Biology of sport and exercise, Sports medicine and physiology of sport, Biomechanics, History of sport and Book reviews with news.