Kinematic repeatability of a multi-segment foot model for dance*

Sarah L. Carter, Nahoko Sato, Luke S. Hopper

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The purpose of this study was to determine the intra and inter-assessor repeatability of a modified Rizzoli Foot Model for analysing the foot kinematics of ballet dancers. Six university-level ballet dancers performed the movements; parallel stance, turnout plié, turnout stance, turnout rise and flex-point-flex. The three-dimensional (3D) position of individual reflective markers and marker triads was used to model the movement of the dancers’ tibia, entire foot, hindfoot, midfoot, forefoot and hallux. Intra and inter-assessor reliability demonstrated excellent (ICC ≥ 0.75) repeatability for the first metatarsophalangeal joint in the sagittal plane. Intra-assessor reliability demonstrated excellent (ICC ≥ 0.75) repeatability during flex-point-flex across all inter-segmental angles except for the tibia-hindfoot and hindfoot-midfoot frontal planes. Inter-assessor repeatability ranged from poor to excellent (0.5 > ICC ≥ 0.75) for the 3D segment rotations. The most repeatable measure was the tibia-foot dorsiflexion/plantar flexion articulation whereas the least repeatable measure was the hindfoot-midfoot adduction/abduction articulation. The variation found in the inter-assessor results is likely due to inconsistencies in marker placement. This 3D dance specific multi-segment foot model provides insight into which kinematic measures can be reliably used to ascertain in vivo technical errors and/or biomechanical abnormalities in a dancer’s foot motion. © 2017 Informa UK Limited, trading as Taylor & Francis Group
Original languageEnglish
Pages (from-to)48-66
JournalSports Biomechanics
Volume17
Issue number1
Early online date21 Jul 2017
DOIs
Publication statusPublished - 2 Jan 2018

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Biomechanical Phenomena
Foot
Tibia
Hallux
Metatarsophalangeal Joint

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Carter, Sarah L. ; Sato, Nahoko ; Hopper, Luke S. / Kinematic repeatability of a multi-segment foot model for dance*. In: Sports Biomechanics. 2018 ; Vol. 17, No. 1. pp. 48-66.
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Kinematic repeatability of a multi-segment foot model for dance*. / Carter, Sarah L.; Sato, Nahoko ; Hopper, Luke S.

In: Sports Biomechanics, Vol. 17, No. 1, 02.01.2018, p. 48-66.

Research output: Contribution to journalArticle

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