Biomaterial Database

Calf Endurance and Achilles Tendon Structure in Classical Ballet Dancers. 2017

Jennifer A Zellers, and Katrina van Ostrand, and Karin Grävare Silbernagel

Program in Biomechanics and Movement Science, Department of Physical Therapy, University of Delaware, 540 South College Avenue, Newark, Delaware 19713;, Email: jzellers@udel.edu.

Optimal lower leg function is critical for ballet dancers to meet their occupational requirements. Achilles tendon injury is particularly detrimental to ballet dancers. While standardized measures have been validated and incorporated into clinical practice for use in people with Achilles tendon injury, normative ranges specific to the dancer population have not been described. The purpose of this pilot study was to observe the performance of pre-professional ballet students and professional ballet dancers on a well-established test battery for lower leg functional performance as well as ultra-sonographic evaluation of the structure of their Achilles tendons. The dancers in this study had significantly shorter Achilles tendons than non-dancers (p = 0.016). Dancers demonstrated significantly higher maximum heel-rise height on the heel-rise test for calf endurance (p < 0.001) but performed significantly less work than non-dancers (p = 0.014). The results of this study support the use of the heel-rise test as a tool for screening and to guide rehabilitation.

UI	MeSH Term	Description	Entries
D007869	Leg Injuries	General or unspecified injuries involving the leg.	Injuries, Leg,Injury, Leg,Leg Injury
D008297	Male		Males
D010807	Physical Endurance	The time span between the beginning of physical activity by an individual and the termination because of exhaustion.	Endurance, Physical,Physical Stamina,Stamina, Physical
D010808	Physical Examination	Systematic and thorough inspection of the patient for physical signs of disease or abnormality.	Physical Exam,Examination, Physical,Physical Examinations and Diagnoses,Exam, Physical,Examinations, Physical,Exams, Physical,Physical Examinations,Physical Exams
D010865	Pilot Projects	Small-scale tests of methods and procedures to be used on a larger scale if the pilot study demonstrates that these methods and procedures can work.	Pilot Studies,Pilot Study,Pilot Project,Project, Pilot,Projects, Pilot,Studies, Pilot,Study, Pilot
D012016	Reference Values	The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.	Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
D012090	Cumulative Trauma Disorders	Harmful and painful condition caused by overuse or overexertion of some part of the musculoskeletal system, often resulting from work-related physical activities. It is characterized by inflammation, pain, or dysfunction of the involved joints, bones, ligaments, and nerves.	Overuse Syndrome,Repetition Strain Injury,Trauma Disorders, Cumulative,Injury, Repetition Strain,Overuse Injury,Repetitive Motion Disorders,Repetitive Strain Injury,Repetitive Stress Injury,Strain Injury, Repetition,Cumulative Trauma Disorder,Injury, Overuse,Injury, Repetitive Strain,Injury, Repetitive Stress,Motion Disorder, Repetitive,Overuse Injuries,Overuse Syndromes,Repetition Strain Injuries,Repetitive Motion Disorder,Repetitive Strain Injuries,Repetitive Stress Injuries,Strain Injury, Repetitive,Stress Injury, Repetitive,Trauma Disorder, Cumulative
D003615	Dancing	Rhythmic and patterned body movements which are usually performed to music.	Ballet,Dance,Hip-Hop Dance,Jazz Dance,Line Dancing,Modern Dance,Salsa Dancing,Square Dance,Tap Dance,Dance, Hip-Hop,Dance, Jazz,Dance, Modern,Dance, Square,Dance, Tap,Dancing, Line,Dancing, Salsa,Hip Hop Dance
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man