Sustainable Football: Physical Profile, Training Load, Risk Factors and Injuries in Swedish Elite Football
试验速览
- 阶段
- 不适用
- 状态
- Enrolling By Invitation
- 发起方
- 入组人数
- 400
- 试验地点
- 1
- 主要终点
- Aerobic endurance
研究概览
简要总结
The literature is scarce when it comes to more comprehensive research project that investigates the differences between youth and adult elite football players in physical parameters and the risk of injury. There is a lack of prospective long-term studies examining the importance of increased training load, physical fitness and performance, training status, position and maturity on its relationship to injury and success in elite football.
The aim of the project is to evaluate different aspects of physical performance, training load and their role as potential risk or protective factors for injury in elite Swedish football. Another aim is to follow youth players at the football academy to explore which physical factors are important for success in elite football and how a possible injury affects the player's continued elite efforts. Finally, the aim is to develop a test battery that can be used to screen for deficits in physical fitness, monitor football players at risk of injury and for return to sport after injury. The main research question intended to be investigated is: How do internal and external load, wellness, and physical performance factors (including Acute Chronic Workload Ratio) differ between academy-level and professional football players, and how do these factors relate to injury risk and success in elite football? A cohort design will be used with ~200 academy football players (~50% women) between 15-19 years old and 50 professional football players participating. The study starts with the assessment of different aspects of physical performance at baseline during the players first year at the academy and internal and external training load and injuries will be registered prospectively for 3 years. The players will be assessed at follow-ups, with the same tests, 3 times a year, to evaluate performance changes. Players who will be transferred to elite play will be evaluated 3 times a year for additional 5 years. Professional football players will also be evaluated with tests with following registration of training load and injuries.
详细描述
Purpose and aims
The aim of the project is to evaluate different aspects of physical fitness, muscle function, training load and their role as potential risk or protective factors for injury in elite Swedish football. Another aim is to follow youth players at the football academy (Swedish sports high schools for football) to explore which physical factors are important for success in elite football and how a possible injury affects the player's continued elite efforts. Finally, the aim is to develop a test battery that can be used to screen for deficits in physical fitness, monitor football players at risk of injury and for return to sport after injury. The following research questions are intended to be investigated:
- What is the internal and external load and Acute Chronic Workload Ratio in football players at academy level compared to professional level?
- What are the levels of wellness in football players at academy level compared to professional level?
- Is impaired physical fitness and muscle function (physical performance) a risk factor for injury in football?
- Which physical factors are important for success in elite football?
- What impact has an injury on the youth player's continued elite efforts?
- Can a test battery be used to screen for deficits in physical performance at the same time monitor football players at risk of injury?
- Which physical factors are important for return to sport after injury in football?
Procedure and time frame The study is expected to begin with pilot testing in November 2024 and then set off in January 2025 with assessment of different aspects of physical performance at baseline during the players first year at the academy and internal and external training load and injuries will be registered prospectively for 3 years. The players will be assessed at follow-ups, with the same tests, 3 times a year, to evaluate performance changes. Players who will be transferred to elite play will be evaluated 3 times a year for additional 5 years. New academy players will take part in 2026 and 2027 following the same procedure. The professional football players will also be evaluated with tests with following registration of training load and injuries.
Measurements Injury registration Data on injury will be collected using a form7 distributed by the team's RPT. All players will report injuries occurring during sport activity diagnosed by a physical examination, MRI, or arthroscopy. Details on injury situation, and diagnosis will be reported by the team's RPT.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 15 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •female and male academy football players aged 15-19 years and
- •female and male professional football players that plays the one of the two top division in Sweden.
排除标准
- •injuries at baseline assessment, that may affect test results
研究组 & 干预措施
Academy football players
300 academy football players between 15-19 years old.
Professional football players
100 professional or semi-professional football players that plays in one of the two top division in Sweden.
结局指标
主要结局
Aerobic endurance
时间窗: Three times a year during 5 years - Change from Baseline
VO2max performed on a treadmill measured in milliliters of oxygen per kilogram of body weight per minute (mL/kg/min).
Muscle strength
时间窗: Three times a year during 5 years - Change from Baseline
Isokinetic and isometric muscle strength of the lower extremity (m quadriceps, hamstrings, hip adduction and abduction) measured in Newton.
Sport specific performance
时间窗: Three times a year during 5 years - Change from Baseline
Speed, change of direction and agility measured in time (seconds).
Neuromuscular control
时间窗: Three times a year during 5 years - Change from Baseline
Neuromuscular control of the knee (valgus, normal, varus), measured in degrees.
Lateral agility and muscular endurance
时间窗: Three times a year during 5 years - Change from Baseline
Lateral agility, muscular endurance and any lower between-limb differences will be evaluated with the 30-sec Side hop test for each leg. Number of repetitions are measured.
次要结局
- External training load - games and practice(Each session are reported on weekly basis during 5 years)
- Internal training load - sRPE(Each session are reported on weekly basis during 5 years)
- Number of injuries(Weekly report during 5 years)
- Internal training load - Freshness(Weekly report during 5 years)
研究者
Sofia Ryman Ryman Augustsson
Associate Professor
Linnaeus University