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Achilles Tendon Loading during Running Estimated via Shear Wave Tensiometry: A Step Towards Wearable Kinetic Analysis

跟腱 脚踝 地面反作用力 扭矩 肌腱 生物力学 运动学 机械 物理医学与康复 材料科学 医学 物理 外科 解剖 经典力学 热力学
作者
Alex J. Reiter,Jack A. Martin,Keith A. Knurr,Peter G. Adamczyk,Darryl G. Thelen
出处
期刊:Medicine and Science in Sports and Exercise [Lippincott Williams & Wilkins]
卷期号:56 (6): 1077-1084 被引量:3
标识
DOI:10.1249/mss.0000000000003396
摘要

ABSTRACT Purpose Understanding muscle–tendon forces (e.g., triceps surae and Achilles tendon) during locomotion may aid in the assessment of human performance, injury risk, and rehabilitation progress. Shear wave tensiometry is a noninvasive technique for assessing in vivo tendon forces that has been recently adapted to a wearable technology. However, previous laboratory-based and outdoor tensiometry studies have not evaluated running. This study was undertaken to assess the capacity for shear wave tensiometry to produce valid measures of Achilles tendon loading during running at a range of speeds. Methods Participants walked (1.34 m·s −1 ) and ran (2.68, 3.35, and 4.47 m·s −1 ) on an instrumented treadmill while shear wave tensiometers recorded Achilles tendon wave speeds simultaneously with whole-body kinematic and ground reaction force data. A simple isometric task allowed for the participant-specific conversion of Achilles tendon wave speeds to forces. Achilles tendon forces were compared with ankle torque measures obtained independently via inverse dynamics analyses. Differences in Achilles tendon wave speed, Achilles tendon force, and ankle torque across walking and running speeds were analyzed with linear mixed-effects models. Results Achilles tendon wave speed, Achilles tendon force, and ankle torque exhibited similar temporal patterns across the stance phase of walking and running. Significant monotonic increases in peak Achilles tendon wave speed (56.0–83.8 m·s −1 ), Achilles tendon force (44.0–98.7 N·kg −1 ), and ankle torque (1.72–3.68 N·m·(kg −1 )) were observed with increasing locomotion speed (1.34–4.47 m·s −1 ). Tensiometry estimates of peak Achilles tendon force during running (8.2–10.1 body weights) were within the range of those estimated previously via indirect methods. Conclusions These results set the stage for using tensiometry to evaluate Achilles tendon loading during unobstructed athletic movements, such as running, performed in the field.
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