The Effect of Training on Hemodynamic Factors in Ballet Dancer

Completed

• Conditions: Venous Insufficiency; Foot Drop (Acquired)
• Interventions: Other: Navicular drop measurement; Other: Measurement of venous return parameters in supine; Other: Measurement of venous return parameters in standing; Other: measurement of midfoot pressure distrubition

• Registration Number: NCT04469361
• Lead Sponsor: Marmara University

Brief Summary

Classic ballet dance is a demonstration of complex motor skills to be revealed in aesthetic combinations and repetitively, and it demands intensive use of the lower extremities within extreme of range of motion (ROM). Because ballet practice depends on advanced technical skills, it involves intensive physical training and causes an overload on the musculoskeletal system and foot deformities such as pes planus.

Plantar venous pump (PVP) is a network of multiple venous vessels located between the muscles of the foot arch. PVP is considered the first step of venous return and discharges into the posterior tibial vein (PTV). PVP is reported to be active during gait while it is inactive in resting position. There are different views on the mechanisms enabling its activation 1-3. The general view is that during the stance phase of the gait, the flattening of the plantar arch with weight transfer causes the veins in this region to narrow and creates a force that pumps the blood up.

The aim of this study is the investigation what kind of hemodynamic changes ballet training causes in the lower extremity

Detailed Description

Not available

Study Timeline

• Status Verified: 2017-02
• Study Start: 2017-09-04
• Primary Completion: 2017-11-03
• Study Completion: 2018-01-05
• Study First Submitted: 2020-07-02
• Study First Submitted QC: 2020-07-08
• Last Update Submitted: 2020-07-08
• Study First Posted: 2020-07-14
• Last Update Posted: 2020-07-14

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 28

Inclusion Criteria

Not provided

Exclusion Criteria

• Participants with a history of foot or ankle surgery,
• Participants with connective tissue disease,
• Participants with rigid pes planus-cavus,
• Participants with chronic venous insufficiency
• Participants with acute ankle injury in recent 3 months

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Female students	measurement of midfoot pressure distrubition	Female students with sedentary lifestyle
Ballerinas	measurement of midfoot pressure distrubition	Balerina students who have trained at least for 4 years
Female students	Navicular drop measurement	Female students with sedentary lifestyle
Ballerinas	Measurement of venous return parameters in standing	Balerina students who have trained at least for 4 years
Female students	Measurement of venous return parameters in supine	Female students with sedentary lifestyle
Female students	Measurement of venous return parameters in standing	Female students with sedentary lifestyle
Ballerinas	Navicular drop measurement	Balerina students who have trained at least for 4 years
Ballerinas	Measurement of venous return parameters in supine	Balerina students who have trained at least for 4 years

Primary Outcome Measures

Name	Time	Method
Evaluation of diameter of tibialis posterior vein in supine	Change from baseline diameter of tibialis posterior vein during intervention	Diameter of tibialis posterior vein was measured in mm
Evaluation of volume flow of tibialis posterior vein in supine	Change from baseline volume flow of tibialis posterior vein during intervention	Volume flow of tibialis posterior vein was measured in ml/min
Evaluation of volume flow of tibialis posterior vein during weight bearing	Change from baseline volume flow of tibialis posterior vein during intervention	Volume flow of tibialis posterior vein was measured in ml/min
Evaluation of midfoot plantar pressure during weight bearing	Change from baseline midfoot pressure during intervention	Midfoot plantar pressure was measured in gr/cm2
Evaluation of diameter of tibialis posterior vein during weight bearing	Change from baseline diameter of tibialis posterior during intervention	Diameter of tibialis posterior vein was measured in mm
Evaluation of navicular drop	Cchange from baseline navicular height in pre-intervention and immediately after the intervention/	Navicular drop was measured in mm
Evaluation of flow velocity of tibialis posterior vein in supine	Change from baseline flow velocity of tibialis posterior vein during intervention	Flow velocity of tibialis posterior vein was measured in cm/s
Evaluation of flow velocity of tibialis posterior vein during weight bearing	Change from baseline flow velocity of tibialis posterior vein during intervention	Flow velocity of tibialis posterior vein was measured in cm/s

Trial Locations

Locations (1)

Marmara University; 🇹🇷 Istanbul, Turkey