Related Experiment Video
Updated: Jan 18, 2026
06:14
In Vivo Protocol of Controlled Subconcussive Head Impacts for the Validation of Field Study Data
Published on: April 18, 2019
6.8K
Injury Prevalence and Associated Factors in Japanese Competitive Kendo Collegiate Athletes
Takeshi Kimura1, Aleksandra Mącznik1, Akira Kinoda1
1Institute for Integrated Sports Medicine, Keio University School of Medicine, Tokyo, Japan.
The Keio Journal of Medicine
|September 10, 2025
Summary
Kendo injuries affect 43% of Japanese collegiate athletes annually. Female athletes and those with higher body mass index (BMI) face increased injury risks, highlighting the need for targeted prevention strategies.
Area of Science:
- Sports Medicine
- Physical Education
- Martial Arts Research
Background:
- Kendo is a popular physical education component in Japanese schools and a lifelong fitness activity globally.
- Its potential as an accessible public health modality necessitates safety and injury prevalence research.
Purpose of the Study:
- To determine the 1-year prevalence of kendo-related injuries among Japanese collegiate athletes.
- To identify factors associated with kendo injuries in this population.
Main Methods:
- A retrospective observational study was conducted using an online survey.
- Data collected from 143 collegiate kendo athletes (average age 19.9, 12.9 years experience) between June 2022 and August 2023.
- Survey recorded athlete characteristics, injury occurrence, location, type, and circumstances.
Main Results:
- The 1-year injury prevalence in Japanese collegiate kendo athletes was 43%.
- Female athletes were 4.9 times more likely to report injuries than male athletes.
- Athletes with a body mass index (BMI) of 25 or higher were 3.7 times more likely to report injuries compared to those with a BMI below 25.
Conclusions:
- Kendo injury prevalence is significant among Japanese collegiate athletes.
- Sex and BMI are key factors associated with kendo-related injuries.
- Targeted injury prevention, particularly strength training for female athletes, is recommended for kendo's long-term development.
Related Concept Videos
01:28Disorders of the Skeletal Muscle
1.7K
The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
1.7K
01:08Prevalence and Incidence
1.5K
In statistical epidemiology and health sciences, two essential metrics—prevalence and incidence—are fundamental for understanding disease dynamics within a population. These measures enable public health officials, epidemiologists, and researchers to assess the burden of diseases, allocate resources effectively, and design impactful public health policies and interventions.
Prevalence indicates the proportion of individuals in a population who have a specific disease or health...
Prevalence indicates the proportion of individuals in a population who have a specific disease or health...
1.5K
01:22Burn Injuries
4.2K
Burn injuries occur when the skin and underlying tissues are damaged due to exposure to heat, electricity, chemicals, radiation, or friction. They can vary in severity, from minor superficial burns to severe deep burns that can be life-threatening.
The damage results in the death of skin cells, which can lead to a massive loss of fluid. Dehydration, electrolyte imbalance, and renal and circulatory failure follow, which can be fatal. Burn patients are treated with intravenous fluids to offset...
The damage results in the death of skin cells, which can lead to a massive loss of fluid. Dehydration, electrolyte imbalance, and renal and circulatory failure follow, which can be fatal. Burn patients are treated with intravenous fluids to offset...
4.2K
01:20Exercise and Cardiovascular Response
3.9K
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
3.9K
01:18Factors Affecting Illness
5.1K
When a person's physical, emotional, intellectual, social development or spiritual functioning is compromised, this deviation from a healthy normal state is called illness. Illness creates stress that in turn harms individuals. Irritation, anger, denial, hopelessness, and fear are behavioral and emotional changes an individual experiences in the phases of illness. A variety of factors influence a person's health and well-being.
For instance, risk factors are connected to illness,...
For instance, risk factors are connected to illness,...
5.1K
01:17Factors Affecting Activity Coefficient
1.5K
The extended Debye-Hückel equation indicates that the activity coefficient of an ion in an aqueous solution at 25°C depends on three partially interdependent properties: the ionic strength of the solution, the charge of the ion, and the ion size.
The activity coefficient value for an ion is close to one when the solution has almost zero ionic strength, i.e., when the solution shows close to ideal behavior. As the ionic strength of the solution increases from 0 to 0.1 mol/L, a...
The activity coefficient value for an ion is close to one when the solution has almost zero ionic strength, i.e., when the solution shows close to ideal behavior. As the ionic strength of the solution increases from 0 to 0.1 mol/L, a...
1.5K