NCT06944652

Brief Summary

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.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
40

participants targeted

Target at P25-P50 for not_applicable

Timeline
1mo left

Started Apr 2025

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress94%
Apr 2025May 2026

First Submitted

Initial submission to the registry

April 17, 2025

Completed
8 days until next milestone

First Posted

Study publicly available on registry

April 25, 2025

Completed
3 days until next milestone

Study Start

First participant enrolled

April 28, 2025

Completed
1 year until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 28, 2026

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

May 30, 2026

Expected
Last Updated

February 23, 2026

Status Verified

February 1, 2026

Enrollment Period

1 year

First QC Date

April 17, 2025

Last Update Submit

February 19, 2026

Conditions

Vertical Jump Performance

Outcome Measures

Primary Outcomes (1)

  • Counter movement jump height

    Counter movement jump height assessed on a force plate

    Change over 8 weeks

Secondary Outcomes (8)

  • Take-off velocity

    Change over 8 weeks

  • Ground reaction force on take off

    Change over 8 weeks

  • Ground reaction force on landing

    Change over 8 weeks

  • Ground reaction force when landing from a standard height

    Change over 8 weeks

  • Functional dorsiflexor range of movement

    Change over 8 weeks

  • +3 more secondary outcomes

Study Arms (2)

Plantar flexor stretching

EXPERIMENTAL

Flexibility training (stretching) of the muscles at the back of the lower leg

Other: Stretching

Shoulder stretching

ACTIVE COMPARATOR

Flexibility training (stretching) of the muscles surrounding the shoulder joint

Other: Stretching

Interventions

StretchingOTHER

Stretching of the plantar flexors or the shoulder joint

Plantar flexor stretchingShoulder stretching

Eligibility Criteria

Age12 Years - 17 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17)

You may qualify if:

  • Currently involved in a sport training program

You may not qualify if:

  • Current or past injuries that might affect jumping performance or stretching the plantar flexors or shoulder joint

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

College of Kinesiology University of Saskatchewan

Saskatoon, Saskatchewan, S7K 2X2, Canada

RECRUITING

Central Study Contacts

Philip Chilibeck, PhD

CONTACT

306-966-1072phil.chilibeck@usask.ca

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Masking Details
Participants are being masked as to the study hypothesis
Purpose
OTHER
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

April 17, 2025

First Posted

April 25, 2025

Study Start

April 28, 2025

Primary Completion

April 28, 2026

Study Completion (Estimated)

May 30, 2026

Last Updated

February 23, 2026

Record last verified: 2026-02

Data Sharing

IPD Sharing
Will not share

Locations

CA(1)