Longitudinal Study of Factors Contributing to the Development of Osgood-Schlatter Disease in Growing Soccer Players

Longitudinal Study of Factors Contributing to the Development of Osgood-Schlatter Disease in Growing Soccer Players - Longitudinal Study of Factors Contributing to the Development of Osgood-Schlatter Disease in Growing Soccer Players

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000060720

Enrollment

Registered

2026-03-01

Start date

2026-03-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Osgood-Schlatter Disease

Interventions

For adolescent soccer players, we will perform ultrasound imaging to evaluate muscle thickness and echogenicity of the quadriceps femoris (rectus femoris, vastus intermedius, vastus medialis, vastus l

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: (1) Male junior high school students belonging to soccer club teams within Gunma Prefecture. (2) Individuals from whom consent can be obtained through written and oral explanations. (3) Individuals for whom consent has also been obtained from their legal representatives (guardians).

Exclusion criteria

Exclusion criteria: Exclude any individual who meets any one of the following three criteria: (1) Individuals currently diagnosed with orthopedic conditions affecting the upper or lower limbs or trunk, for which a physician has restricted physical activity. (2) Individuals with a history of hip or knee joint disease (including surgical history) that may potentially affect knee extension strength (i.e., individuals unable to sufficiently exert knee extension strength). (3) Individuals who do not provide consent, either personally or through a proxy, after receiving the written explanation and verbal briefing.

Design outcomes

Primary

Measure	Time frame
Presence or absence of Osgood-Schlatter disease	—

Secondary

Measure	Time frame
Height, Weight, BMI, Body Fat Percentage, Visceral Fat Level, Skeletal Muscle Mass Index (STAR), Thigh Quadriceps Muscle Thickness (Rectus Femoris, Vastus Intermedius, Vastus Medialis, Vastus Lateralis), Thigh Quadriceps Muscle Brightness (Rectus Femoris, Vastus Intermedius, Vastus Medialis, Vastus Lateralis), Knee Extension Strength, Heel-Buttock Distance (HBD), Maximum dorsiflexion angle (DFA) of the weight-bearing ankle, Single Hop Test (SHT), One-Legged Stand Test, age, years playing soccer, years of sports experience, weekly practice hours, weekly practice days, monthly number of matches, presence/absence of cool-down, cool-down duration	—

Measure

Time frame

Height, Weight, BMI, Body Fat Percentage, Visceral Fat Level, Skeletal Muscle Mass Index (STAR), Thigh Quadriceps Muscle Thickness (Rectus Femoris, Vastus Intermedius, Vastus Medialis, Vastus Lateralis), Thigh Quadriceps Muscle Brightness (Rectus Femoris, Vastus Intermedius, Vastus Medialis, Vastus Lateralis), Knee Extension Strength, Heel-Buttock Distance (HBD), Maximum dorsiflexion angle (DFA) of the weight-bearing ankle, Single Hop Test (SHT), One-Legged Stand Test, age, years playing soccer, years of sports experience, weekly practice hours, weekly practice days, monthly number of matches, presence/absence of cool-down, cool-down duration

—

Countries

Japan

Contacts

Public ContactTsuyoshi Tajika

Graduate School of Gunma University Graduate School of Health Sciences, Rehabilitation Studies

tajika@gunma-u.ac.jp027-220-8945

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026