Participants will receive traditional Physical Therapy sessions (standard care) under the supervision of the accredited physical therapist. Participants will be wearing the Actigraph during Physical Therapy session. Participants will perform regular physical exercise, such as 20 minutes walking or biking on a stationary bike, under the supervision of a physical therapist.

Measured by comparison PROMIS Pediatric Item Bank GenPop v2.0 - Fatigue - Short Form 10a of patient in first physical therapy session and second physical therapy session .

PROMIS Pediatric Item Bank GenPop v3.0 - Fatigue - Short Form 10a is a 10 items -questionnaire which measures the fatigue scale of the patient with scores range from 1 to 5,(1 = never and 5 = Almost always).

The modified WHO (Five) Well-Being Index is a participant-reported outcome measure that assesses current mental well being. Questionnaire contains 5 questions . Scores range from 0 to 5, with higher scores indicating the corresponding feeling exists all the time

Acceptability, of the traditional physical therapy or virtual reality physical therapy interventions will be assessed using the Acceptability of Intervention Measure (AIM) which is a subscale of the Triple P Tool. Scale items are scored on a Likert scale from 1 to 5 where higher scores indicate higher acceptability of the intervention.

Appropriateness, of the traditional physical therapy or virtual reality physical therapy interventions will be assessed using the Intervention Appropriateness Measure (IAM) which is a subscale of the Triple P Tool. Scale items are scored on a Likert scale from 1 to 5 where higher scores indicate higher appropriateness of the intervention.

Feasibility, of the traditional physical therapy or virtual reality physical therapy interventions will be assessed using the Feasibility of Intervention Measure (FIM) which is a subscale of The Triple P Tool. Scale items are scored on a Likert scale from 1 to 5 where higher scores indicate higher feasibility.

This is an self developed feasibility survey. Feasibility, of the virtual reality physical therapy interventions will be assessed using the Feasibility and acceptability survey(patient). Survey contains 10 items. First 5 items are yes no questions. Last 5 items are scored on a Likert scale from 1 to 10 where higher scores indicate higher feasibility.

This is an self developed feasibility survey. Feasibility, of the virtual reality physical therapy interventions will be assessed using the Feasibility and acceptability survey(parent). Survey contains 3 items. Scale items are scored on a Likert scale from 1 to 5 where higher scores indicate higher satisfaction.

Measured by comparison Pediatric Functional Assessment of Chronic Illness Therapy - Fatigue (FACIT-F) of patient in first physical therapy session and second physical therapy session .

Pediatric Functional Assessment of Chronic Illness Therapy - Fatigue (FACIT-F) is a 13 items -questionnaire which measures the fatigue scale of the patient with minimum score at 0 (low fatigue score) and maximum score at 52 (high fatigue score).