Passive mechanical properties of extrinsic foot muscles and Achilles tendon in adults with and without pes planus

The purpose of the present study was to investigate the changes in stiffness, tone, and elasticity of extrinsic foot muscles and Achilles tendon in adults with pes planus at rest and during standing. The study was conducted with 59 participants, 29 with pes planus and 30 with normal foot posture. Th...

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Bibliographic Details
Published in:Journal of biomechanics 2022-03, Vol.133, p.110961-110961, Article 110961
Main Authors: Taş, Serkan, Aktaş, Arda, Tüfek, Muhammed Taha
Format: Article
Language:English
Subjects:
Achilles tendon
Achilles Tendon - physiology
Adult
Adults
Arthritis
Elasticity
Feet
Flatfoot
Foot
Foot diseases
Foot muscles
Humans
Leg
Mechanical properties
Muscle, Skeletal - physiology
Muscles
Osteoarthritis
Pes planus
Plantar fasciitis
Posture
Skeletal muscle
Stiffness
Tendons
Tone
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Summary:The purpose of the present study was to investigate the changes in stiffness, tone, and elasticity of extrinsic foot muscles and Achilles tendon in adults with pes planus at rest and during standing. The study was conducted with 59 participants, 29 with pes planus and 30 with normal foot posture. The oscillation frequency (indicator of tone), dynamic stiffness (indicator of stiffness), and logarithmic decrement (related to elasticity) of the Achilles tendon, peroneus longus, tibialis anterior, and medial and lateral gastrocnemius muscles were measured with a myotonometer (MyotonPRO, Myoton AS, Estonia). The passive mechanical properties of the selected muscles and tendon were measured at rest and during standing. The oscillation frequency, dynamic stiffness, and logarithmic decrement of the peroneus longus, tibialis anterior, and medial and lateral gastrocnemius muscles were similar in individuals with and without pes planus (p 
ISSN:0021-9290
1873-2380
DOI:10.1016/j.jbiomech.2022.110961