高齢女性における長期レジスタンス運動が心臓構造および機能に及ぼす改善効果:2年間のランダム化比較試験
Ricardo J Rodrigues1,2, Paolo M Cunha1, João P Nunes1,3
1Metabolism, Nutrition, and Exercise Laboratory. Physical Education and Sport Center, State University of Londrina, Londrina, PR, BRAZIL.
Medicine and science in sports and exercise
|January 23, 2026
まとめ
段階的なレジスタンス運動(RT)は、2年間で高齢女性の心臓構造および機能を改善した。運動群は対照群と比較して心臓測定値に有意な改善を示した。
科学分野:
- 循環器病学
- 老年医学
- 運動生理学
背景:
- 加齢は、心臓の構造および機能に有害な変化をもたらす。
- 高齢者の心臓の健康を維持することは、全体的な幸福と長寿にとって極めて重要である。
- レジスタンス運動(RT)は、加齢に伴う心血管系の衰退に対抗するための実行可能な介入である。
研究 の 目的:
- 高齢女性における、監督下での段階的なレジスタンス運動(RT)プログラムの長期的な影響を調査すること。
- 2年間のRT介入後の主要な心エコー検査パラメータの変化を評価すること。
主な方法:
- 60歳以上の身体的に自立した女性64名を対象とした2年間のランダム化比較試験。
- 参加者は、レジスタンス運動群(TG、n=33)または対照群(CG、n=31)に割り当てられた。
- RTプログラムは、週3回の全身運動セッションを含み、介入前後に心エコー検査による評価が行われた。
主要な成果:
- 複数の心臓パラメータにおいて、群と時間の有意な交互作用が観察された(P < 0.05)。
- RT群では、左室質量指数、中隔および後壁の厚さ、心室容積の減少が認められた。
- RT群では、左房容積指数、駆出率、および拡張機能パラメータ(E'/E中隔、E中隔、E側壁)の改善も認められた。
結論:
- 2年間の監督下での段階的なレジスタンス運動プログラムは、高齢女性の心臓の形態学的および機能的パラメータを著しく改善することができる。
- RTは、高齢者の心血管系の健康を増進するための有望な非薬理学的介入である。
- これらの所見は、心臓の長寿を促進するために、高齢者へのライフスタイル推奨事項にRTを統合することを支持する。
関連する概念動画
Structural Protein Function
29.8K
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...
29.8K
Structural Protein Function
3.2K
3.2K
Structure of Cardiac Muscles
16.7K
Cardiac muscle, or myocardium, is a specialized type of muscle found exclusively in the heart. Its unique structural and functional characteristics enable the heart to perform its vital role of pumping blood throughout the body continuously and rhythmically. The cardiac muscle cells, or cardiomyocytes, possess an endomysium and perimysium but do not have an epimysium.
Compared to skeletal muscles, cardiac muscle cells are small and mostly have a single nucleus. Additionally, they are usually...
Compared to skeletal muscles, cardiac muscle cells are small and mostly have a single nucleus. Additionally, they are usually...
16.7K
Fruit Development, Structure, and Function
25.1K
Fruits form from a mature flower ovary. As seeds develop from the ovules contained within, the ovary wall undergoes a series of complex changes to form fruit. In some fruits, such as soybeans, the ovary wall dries; in other fruits, such as grapes, it remains fleshy. In some cases, organs other than the ovary contribute to fruit formation; such fruits are called accessory fruits.
25.1K
Structure and Function of Erythrocytes
5.3K
There are between 4.2 and 6 million erythrocytes, also known as red blood cells, in every microliter of blood. These cells are small, flattened biconcave discs with centers that are depressed.
The erythrocyte plasma membrane is associated with proteins such as spectrin, which forms a flexible cytoplasmic meshwork. This meshwork allows erythrocytes to twist, turn, become cup-shaped, and regain their biconcave shape as they pass through narrow capillaries. Additionally, erythrocytes can form...
The erythrocyte plasma membrane is associated with proteins such as spectrin, which forms a flexible cytoplasmic meshwork. This meshwork allows erythrocytes to twist, turn, become cup-shaped, and regain their biconcave shape as they pass through narrow capillaries. Additionally, erythrocytes can form...
5.3K
Structure and Function of Platelets
3.1K
The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
3.1K


