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Assessment of myofascial stiffness of flexor digitorum superficialis muscles in rock climbers

Kocur Piotr, Piwińska Iga, Goliwąs Magdalena, Adamczewska Katarzyna

Acta of Bioengineering and Biomechanics

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2021

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Vol. 23, no. 2

23--31

EN

Purpose: Myofascial stiffness is the biomechanical property that can be considered as a modifiable risk factor injury of athletes. Moreover, the level of muscle stiffness can be crucial to assessment muscle adaptation to exercise. However, stiffness of flexor muscles in rock climbers has never been investigated. The purpose of this study was to evaluate the myofascial stiffness of the flexor digitorum superficialis (FDS) in the rock climbers. Methods: The group of rock climbers (n = 16) has been compared to the non-climbers group (n = 16), matched in terms of anthropometric measures and an average level of physical fitness. Moreover, the impact of the one-time rock climbing training on FDS stiffness was assessed in the rock climbers group. The measurement of myotonometric myofascial stiffness of FDS muscles was performed, when the elbow was flexed and fully extended. In both positions, the measurements were taken with the hand open and closed. Results: It has been shown that rock climber’s FDS muscle stiffness before training was significantly higher (from 15 to 20%) compared to non-climbers group. Moreover, after climbing myofascial stiffness of FDS muscles increased significantly from 25 to 40%. Conclusions: Rock climbers have significantly higher stiffness of FDS muscles after rock climbing training. Moreover, the increased stiffness in the FDS differentiates rock climbers from the active and healthy control group. Results may indicate that decrease of muscle stiffness of FDS can be an important factor for the improvement of the climbing effectiveness and prevention of overload in the forearm flexor muscles and their recovery.

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Analiza rozwiązań konstrukcyjnych egzoszkieletów palców ręki

Maćkowiak P., Ligaj B.

Postępy w Inżynierii Mechanicznej

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2015

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nr 6(3)

23--34

PL

W pracy przedstawiono istniejący stan wiedzy dotyczący egzoszkieletów palców ręki. Na podstawie analizy istniejących rozwiązań konstrukcyjnych scharakteryzowano egzoszkielety ręki. Celem pracy jest prezentacja własnej koncepcji urządzenia, będącej modyfikacją egzoszkieletu Shieldsa. Mimo dużego popytu na egzoszkielety ręki, obecne rozwiązania nie spełniają oczekiwań pacjentów i lekarzy. Ze względu na wiele stopni swobody, jakie ma ludzka ręka, konieczny jest kompromis pomiędzy uproszczeniem urządzenia a umożliwieniem wykonania chwytów podstawowych.

EN

This article presents prezent knowledge of a hand exoskeleton. This paper describes characterization of hand exoskeletons based on an analysis of existing design solutions. The aim is to present own concept device, which is a modification of Shields exoskeleton. Despite the high demand for exoskeletons hand, current solutions do not meet the expectations of patients and physicians. The human hand has many degrees of freedom. Therefore, the need is to simplify the design of the device and provide the ability to perform basic hand grips at the same time.

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Structural solutions to be used in exoskeletons of hand fingers

Maćkowiak P., Ligaj B.

Journal of Polish CIMEEAC

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2015

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Vol. 10, no 1

91--99

EN

This study is a presentation of state of the art in the field exoskeletons of hand fingers. Exoskeletons of hand fingers have been characterized on the basis of an analysis of currently existing structural solutions. The goal of this research is to present a new concept of the device being a modification of Shield’s exoskeleton. Despite a large demand for hand exoskeletons the currently available solutions often fail to meet requirements of doctors and patients. Due to many freedom degrees characteristic of a human hand a compromise is necessary between simplicity of the device and the possibility of performing basis grasps.