Effect of a Flexibility Program on the Extensibility of the Hamstrings and the Thoracic and Lumbar Spinal Curvatures

NCT05904834 | Completed

• 1 other identifier: 20092013
• Study Type: interventional
• Target: 61
• Locations: 1 country
• Sites: 1

Brief Summary

The goal of this clinical trial is to analyse the effect of an intervention program based on hamstring flexibility on the extensibility and curvatures of the spine in dancers. Participants will be dance student with ten years of experience that will undergo a program of stretching four times per week during seven weeks, followed by a detraining period, and a retraining period of three weeks. There will be a pre-test, a post-test and two re-tests after the intervention. The results will be compared with a control group of dancers that will not take part in the stretching program.

Conditions

Spine Injury; Hamstring Injury; Lumbar Hyperlordosis; Kyphosis

Keywords

Flexibility training; Dancers; Ballet; Flexibility testing

Outcome Measures

Primary Outcomes (20)

• Linear hamstring flexibility

  The flexibility of the hamstring will be assessed with different linear test. Sit and reach test will be performed and the measure will be reported in centimeters

  Pre-test (week 1)

• Linear hamstring flexibility

  The flexibility of the hamstring will be assessed with different linear test. Sit and reach test will be performed and the measure will be reported in centimeters

  Post-test (week 8)

• Linear hamstring flexibility

  The flexibility of the hamstring will be assessed with different linear test. Sit and reach test will be performed and the measure will be reported in centimeters

  Re-test 1 (week 11)

• Linear hamstring flexibility

  The flexibility of the hamstring will be assessed with different linear test. Sit and reach test will be performed and the measure will be reported in centimeters

  Re-test 2 (week 14)

• Angular hamstring flexibility

  The flexibility of the hamstring will be assessed with angular tests. Straight leg raise will be performed in the active and passive versions and the result will be reported in grades

  Pre-test (week 1)

• Angular hamstring flexibility

  The flexibility of the hamstring will be assessed with angular tests. Straight leg raise will be performed in the active and passive versions and the result will be reported in grades

  Post-test (week 8)

• Angular hamstring flexibility

  The flexibility of the hamstring will be assessed with angular tests. Straight leg raise will be performed in the active and passive versions and the result will be reported in grades

  Re-test 1 (week 11)

• Angular hamstring flexibility

  The flexibility of the hamstring will be assessed with angular tests. Straight leg raise will be performed in the active and passive versions and the result will be reported in grades

  Re-test 2 (week 14)

• Thoracic spinal curvatures

  The thoracic spinal curvatures will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Pre-test (week 1)

• Thoracic spinal curvatures

  The thoracic spinal curvatures will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Post-test (week 8)

• Thoracic spinal curvatures

  The thoracic spinal curvatures will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Re-test 1 (week 11)

• Thoracic spinal curvatures

  The thoracic spinal curvatures will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Re-test 2 (month 14)

• Lumbar thoracic spinal curvatures

  The lumbar spinal curvatures will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Pre-test (week 1)

• Lumbar thoracic spinal curvatures

  The lumbar spinal curvatures will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Post-test (Week 8)

• Lumbar thoracic spinal curvatures

  The lumbar spinal curvatures will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Re-test 1 (week 11)

• Lumbar thoracic spinal curvatures

  The lumbar spinal curvatures will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Re-test 2 (Week 14)

• Pelvic Tilt

  The pelvic tilt will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Pre-test (week 1)

• Pelvic Tilt

  The pelvic tilt will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Post-test (Week 8)

• Pelvic Tilt

  The pelvic tilt will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Re-test 1 (week 11)

• Pelvic Tilt

  The pelvic tilt will be assessed in different positions, including relaxed standing, the sit and reach test and Macrae \& Wright test. The result will be reported in grades.

  Re-test 2 (Week 14)

Study Arms (2)

Flexibility training

EXPERIMENTAL

The intervention group will undergo a flexibility training focused on hamstring extensibility. Each will they will take part in four stretching sessions besides the normal dance training.

Other: Flexibility training

No training

NO INTERVENTION

The control group will continue with their training routine during the experiment.

Interventions

Flexibility training OTHER

Each session consisted of three or four exercises, of which three were static stretches and if there was a fourth, it was dynamic. The duration of each exercise was 20 seconds with 15 seconds rest between sets and 30 seconds rest between exercises.

Flexibility training

Eligibility Criteria

• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• students enrolled for at least 18 ECTS credits at the High Conservatory of Dance;
• previous experience of 10 years in dance;
• practice dance at least 4 days a week;
• (c) not suffer from any chronic pathology or at the time of the study; (d) not practising any other physical exercise apart from dance.

You may not qualify if:

• Not attending at least 80% of the practical sessions of the Conservatory throughout the programme;
• being pregnant at the beginning of the study or getting pregnant during the development of the study;
• having undergone surgery on the spine or hamstring musculature;
• having suffered a hamstring injuries in the last year or during the study;
• having structured spinal disorders;
• having an injury at the time of the assessment that prevents her from taking the measurements;
• stretching of the hamstring musculature outside the conservatory.

Sponsors & Collaborators

• Universidad Católica San Antonio de Murcia: lead

Study Sites (1)

Universidad Católica San Antonio

Murcia, 30107, Spain

Location

MeSH Terms

Conditions

Spinal Injuries; Swayback; Kyphosis

Condition Hierarchy (Ancestors)

Back Injuries; Wounds and Injuries; Deficiency Diseases; Malnutrition; Nutrition Disorders; Nutritional and Metabolic Diseases; Sheep Diseases; Animal Diseases; Spinal Curvatures; Spinal Diseases; Bone Diseases; Musculoskeletal Diseases

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: INVESTIGATOR
• Masking Details: The investigators on charge of the test do not know the group they are measuring
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Director of the International Kinanthropometry Chair

Model Details: Single intervention group and single control group

Study Record Dates

• First Submitted: May 22, 2023
• First Posted: June 15, 2023
• Study Start: January 9, 2023
• Primary Completion: May 31, 2023
• Study Completion: December 22, 2023
• Last Updated: June 6, 2024

Record last verified: 2024-06

Data Sharing

• IPD Sharing: Will not share

Locations

ES (1)