This study aims to explore the effects of Whole-Body Vibration (WBV) exercises and relaxation techniques on adolescent female athletes who are experiencing Female Athlete Triad Syndrome - a condition that may include low bone density, irregular menstrual cycles, and low energy availability.

Participants will take part in a structured program combining vibration training and relaxation sessions over several weeks. The goal is to determine whether this combination can improve bone health, menstrual regularity, physical performance, and overall well-being in young female athletes.

The Female Athlete Triad is a medical condition commonly observed in adolescent female athletes and is characterized by three interrelated components: low energy availability (with or without an eating disorder), menstrual dysfunction, and decreased bone mineral density. These factors can negatively affect growth, performance, and long-term health.

This randomized controlled study aims to investigate the combined effects of Whole-Body Vibration (WBV) training and relaxation techniques on adolescent athlete girls diagnosed with the Female Athlete Triad Syndrome.

Participants will be divided into two groups : study group will receive WBV and relaxation training and control group will receive relaxation technique only. The intervention will be conducted for 8 weeks under the supervision of a physiotherapist.

Primary outcomes will include changes in bone mineral density and hormonal regulation. Secondary outcomes will assess psychological well-being.

This study seeks to provide evidence on the potential benefits of combining WBV and relaxation techniques to support bone health, hormonal regulation, and physical and mental recovery among adolescent female athletes.

Inclusion Criteria:

• Low energy availability (with or without disordered eating)
• Menstrual dysfunction (oligomenorrhea)
• Low bone mineral density or a history of stress fractures

Exclusion criteria:

• Recent fractures or unhealed stress fractures within the last 6 months.
• Presence of serious medical conditions that contraindicate WBV or exercise participation, such as: Uncontrolled cardiovascular disease, Uncontrolled hypertension, Neurological disorders, Severe vestibular disorders, Active cancer, Bleeding/clotting disorders.
• Severe eating disorder requiring inpatient medical or psychiatric treatment.
• Current use of medications that significantly affect bone or hormonal status
• Participation in another interventional clinical study within the last 3 months.
• Inability or unwillingness to provide assent/consent or comply with study procedures.

Only individuals who self-identify as female are eligible to participate. This includes all participants assigned female at birth who currently identify as female. The study focuses on Female Athlete Triad Syndrome, which specifically affects female physiology and hormonal profiles.

The outcome assessor will be blinded to group allocation to reduce measurement bias. Participants and intervention providers will not be blinded due to the nature of the exercise interventions.