Related Experiment Video
Updated: Jul 1, 2025

Author Spotlight: Comparing Alveolar and Long Bone Remodeling to Explore OTM Model Potential
Published on: July 21, 2023
An Analysis From a Tertiary Pediatric Hospital: Does Physical Activity Play a Role in the Management of Children and
Francisca Galhardo Saraiva1, Joana Jonet2, Margarida Roquette2
1Pediatrics, Hospital Fernando Fonseca, Amadora, PRT.
Insights
Most children with Osteogenesis Imperfecta (OI) engage in regular physical activity, often with adaptations. Swimming is a common choice, highlighting the importance of exercise in managing OI.
Area of Science:
- Pediatric Rehabilitation
- Connective Tissue Disorders
Background:
- Osteogenesis Imperfecta (OI) is a genetic disorder causing brittle bones and frequent fractures in children and young adults.
- Multidisciplinary care, including physical medicine and rehabilitation, is essential for managing OI.
- Exercise may improve functional independence and well-being in children with OI, despite not affecting the disease itself.
Purpose of the Study:
- To assess the exercise habits of children and young adults with Osteogenesis Imperfecta (OI).
- To provide insights into physical activity patterns within this patient population.
Main Methods:
- Retrospective cohort analysis of 21 patients aged 3+ years (1995-2020).
- Data collected from hospital records and caregiver phone interviews.
- First national case series on exercise habits in pediatric OI.
Main Results:
- 86% of patients engaged in regular physical activity; 14% were totally dependent (all Type III OI).
- Most active patients (67%) performed similar activity levels to peers, with necessary adaptations.
- Swimming was the most frequent activity (50%); 39% exercised ≤2 times/week, and 89% for ≤1 hour/session.
Conclusions:
- Physical activity is a vital component of Osteogenesis Imperfecta (OI) management.
- While the importance of exercise is recognized, structured planning, follow-up, and monitoring are crucial for optimizing its benefits.
Introduction:
Osteogenesis imperfecta (OI) is a hereditary connective tissue disorder characterized by reduced bone density and increased proneness to fractures. It manifests across a varied clinical spectrum of expressions in children and young adults. It is crucial for children with OI to have a multidisciplinary follow-up, including orthopedics, pediatrics, and physical medicine and rehabilitation. Although exercise may have no effect on the disease itself, it might improve the autonomy, self-esteem, and fitness of these children. Methods: Retrospective cohort analysis of children and young adults aged three or more years old followed-up in a Level III Pediatric Hospital between 1995 and 2020. Demographic and clinical data were obtained from the hospital records and from the caregivers via phone calls. To our knowledge, this is the first national case series published assessing exercise habits in children with this condition.
Results:
Among the 21 patients studied, the median age was 14 years, with no gender predominance. Eighteen (86%) practiced regular physical activity, while the remaining three (14%), all of whom were type III OI, were totally dependent. Of the aforementioned 18 children, 12 (67%) considered practicing the same level of physical activity compared to their healthy peers, although most of them needed adaptations. The most reported extracurricular activity was swimming, in 50% of the cases. About 39% engaged in physical activity two times or less per week, and 89% practiced for one hour or less per session.
Discussion:
Over the years, it has become clear that physical activity is an important part of OI management. While awareness of the importance of exercise already exists, proper planning, follow-up, and monitoring are essential.
More Related Videos
11:47A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders
Published on: June 8, 2014
07:12Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model
Published on: September 28, 2017
Related Concept Videos
Bone Disorders
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Role of Vitamins in Maintaining Bone Health
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Osteoclasts in Bone Remodeling
Fractures: Bone Repair
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...
Bone Remodeling
Hormones and Bone Tissue
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...