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Videos de Conceptos Relacionados

Bone Disorders01:29

Bone Disorders

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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
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...
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Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

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The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
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Role of Vitamins in Maintaining Bone Health01:25

Role of Vitamins in Maintaining Bone Health

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The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
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...
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Bone Remodeling01:40

Bone Remodeling

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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
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Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

3.2K
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
3.2K
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

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The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
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...
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Video Experimental Relacionado

Updated: Sep 9, 2025

Estrogen-Like Effect of Bazi Bushen Capsule in Ovariectomized Rats
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Hacer ejercicio para prevenir la osteoporosis

Sahar Mohammadnabizadeh, Maryam Mohammadi

    Nursing research
    |August 28, 2025
    PubMed
    Resumen

    Mujeres

    Área de la Ciencia:

    • Investigación del comportamiento de salud
    • Estrategias de prevención de la osteoporosis
    • Aplicaciones de la teoría cognitiva social

    Sus antecedentes:

    • El ejercicio es crucial para la prevención de la osteoporosis, pero la participación de las mujeres es insuficiente.
    • Los niveles de actividad física subóptimos en las mujeres plantean un problema de salud pública para la salud ósea.

    Objetivo del estudio:

    • Evaluar las construcciones del modelo de creencias de salud y la autorregulación en relación con el ejercicio para la prevención de la osteoporosis.
    • Identificar los factores psicológicos que influyen en el comportamiento del ejercicio en mujeres premenopáusicas.

    Principales métodos:

    • Encuesta transversal de 250 mujeres premenopáusicas (de 30 a 49 años).
    • Utilizó cuestionarios para evaluar creencias de salud, autorregulación, conciencia y comportamiento de ejercicio.
    Palabras clave:
    ejerciciocomportamiento de saludLa osteoporosis

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    Principales resultados:

    • Las puntuaciones de comportamiento de ejercicio fueron generalmente bajas entre los participantes.
    • Los beneficios percibidos, la susceptibilidad, la autoeficacia, la motivación, la autorregulación y las barreras predijeron significativamente el comportamiento del ejercicio.

    Conclusiones:

    • Los beneficios percibidos y la autoeficacia son predictores clave del comportamiento del ejercicio para la prevención de la osteoporosis.
    • La mejora de la autoeficacia y la educación sobre los beneficios son vitales para el éxito de la promoción de la salud en las mujeres de mediana edad.