Universität zu Köln

Richter, Charlotte ORCID: 0000-0002-8910-8602, Braunstein, Bjoern ORCID: 0000-0002-5173-8916, Staeudle, Benjamin, Attias, Julia, Suess, Alexander, Weber, Tobias, Mileva, Katya N., Rittweger, Joern, Green, David A. and Albracht, Kirsten ORCID: 0000-0002-4271-2511 (2021). Gastrocnemius Medialis Contractile Behavior Is Preserved During 30% Body Weight Supported Gait Training. Front. Sports Act. Living, 2. LAUSANNE: FRONTIERS MEDIA SA. ISSN 2624-9367

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Abstract

Rehabilitative body weight supported gait training aims at restoring walking function as a key element in activities of daily living. Studies demonstrated reductions in muscle and joint forces, while kinematic gait patterns appear to be preserved with up to 30% weight support. However, the influence of body weight support on muscle architecture, with respect to fascicle and series elastic element behavior is unknown, despite this having potential clinical implications for gait retraining. Eight males (31.9 +/- 4.7 years) walked at 75% of the speed at which they typically transition to running, with 0% and 30% body weight support on a lower-body positive pressure treadmill. Gastrocnemius medialis fascicle lengths and pennation angles were measured via ultrasonography. Additionally, joint kinematics were analyzed to determine gastrocnemius medialis muscle-tendon unit lengths, consisting of the muscle's contractile and series elastic elements. Series elastic element length was assessed using a muscle-tendon unit model. Depending on whether data were normally distributed, a paired t-test or Wilcoxon signed rank test was performed to determine if body weight supported walking had any effects on joint kinematics and fascicle-series elastic element behavior. Walking with 30% body weight support had no statistically significant effect on joint kinematics and peak series elastic element length. Furthermore, at the time when peak series elastic element length was achieved, and on average across the entire stance phase, muscle-tendon unit length, fascicle length, pennation angle, and fascicle velocity were unchanged with respect to body weight support. In accordance with unchanged gait kinematics, preservation of fascicle-series elastic element behavior was observed during walking with 30% body weight support, which suggests transferability of gait patterns to subsequent unsupported walking.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Richter, Charlotte UNSPECIFIED orcid.org/0000-0002-8910-8602 UNSPECIFIED Braunstein, Bjoern UNSPECIFIED orcid.org/0000-0002-5173-8916 UNSPECIFIED Staeudle, Benjamin UNSPECIFIED UNSPECIFIED UNSPECIFIED Attias, Julia UNSPECIFIED UNSPECIFIED UNSPECIFIED Suess, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Weber, Tobias UNSPECIFIED UNSPECIFIED UNSPECIFIED Mileva, Katya N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rittweger, Joern UNSPECIFIED UNSPECIFIED UNSPECIFIED Green, David A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Albracht, Kirsten UNSPECIFIED orcid.org/0000-0002-4271-2511 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-599302
DOI:	10.3389/fspor.2020.614559
Journal or Publication Title:	Front. Sports Act. Living
Volume:	2
Date:	2021
Publisher:	FRONTIERS MEDIA SA
Place of Publication:	LAUSANNE
ISSN:	2624-9367
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language IN-VIVO BEHAVIOR; POSITIVE-PRESSURE; REDUCED-GRAVITY; MUSCLE-ACTIVITY; WALKING SPEED; RUN; REPRODUCIBILITY; ARCHITECTURE; LOCOMOTION; VELOCITY Multiple languages Sport Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/59930