Stretching to Improve Jumping Performance
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Stretching.
- Who it may be relevant to
- Registry conditions: Vertical Jump Performance. Basic parameters: 12 years — 17 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Canada
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
Flexibility Training (Stretching) to Improve Jumping Performance
Overview
The study involves comparison of an 8-week plantar flexor stretching program to a shoulder stretching program for improving vertical jump performance in adolescent athletes.
Detailed description
Increasing flexibility may improve vertical jump performance. For example, being able to go deeper into a squat before jumping may allow for greater force development through the range of movement and this may transfer to greater vertical jump height. The study compares plantar flexor stretching to shoulder stretching for improving vertical jump performance in adolescent athletes. Athletes are being stratified by sex and maturity status (before or after estimated age at peak height velocity) and randomized to one of two groups: Plantar flexor stretching (2 sets of 6 stretches, 5 times per week) or the same volume of shoulder stretching. Before and after training, participants are being assessed for vertical jump and landing performance.
Interventions
- Other Stretching
Stretching of the plantar flexors or the shoulder joint
Primary outcome measures
- Counter movement jump height [Time frame: Change over 8 weeks]
Secondary outcome measures (8)
- Take-off velocity [Time frame: Change over 8 weeks]
- Ground reaction force on take off [Time frame: Change over 8 weeks]
- Ground reaction force on landing [Time frame: Change over 8 weeks]
- Ground reaction force when landing from a standard height [Time frame: Change over 8 weeks]
- Functional dorsiflexor range of movement [Time frame: Change over 8 weeks]
- Active dorsiflexor range of movement [Time frame: Change over 8 weeks]
- Passive dorsiflexor range of movement [Time frame: Change over 8 weeks]
- Shoulder flexibility [Time frame: Change over 8 weeks]
Eligibility criteria
Inclusion criteria
- Currently involved in a sport training program
Exclusion criteria
- Current or past injuries that might affect jumping performance or stretching the plantar flexors or shoulder joint
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Single blind
- Primary purpose
- Other
Study locations
Canada · 1 center
- College of Kinesiology University of Saskatchewan — Saskatoon
Identifiers
NCT: NCT06944652 · 4925