Effects of Twelve Sessions of Horizontally Oriented Plyometric Training on Sprint-Related Temporal-Kinematic Outcomes in Early-Adolescent Track-and-Field Athletes: A Field-Based Exploratory Pre-Post Study
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 9
- 试验地点
- 1
- 主要终点
- Change in 60-m Sprint Time
研究概览
简要总结
This field-based exploratory pre-post study examined the effects of a six-week horizontally oriented plyometric training program on sprint performance and sprint-related temporal-kinematic outcomes in early-adolescent male track-and-field athletes. Participants completed 12 supervised plyometric training sessions integrated into their regular athletics practice. Outcomes were assessed at baseline and after the intervention using field-based sprint testing, video-derived temporal-kinematic analysis, and horizontal jump performance measures.
The study was conducted in a low-resource community sport setting in Antioquia, Colombia. The intervention was designed according to the participants' age, training background, and usual sport practice demands, with progressive exercise exposure, supervision, adequate recovery, and safety monitoring throughout the training period.
详细描述
Horizontally oriented plyometric training may be relevant for sprint development because sprint acceleration and the transition toward maximal sprinting velocity require rapid force production and effective forward orientation of propulsive actions. However, evidence in early-adolescent track-and-field athletes remains limited, particularly in community-based sport contexts where coaches rely on accessible field tests and video-based kinematic procedures.
This exploratory single-arm intervention study evaluated pre-post changes after 12 sessions of horizontally oriented plyometric training in male early-adolescent track-and-field athletes aged 12-13 years. The training program was delivered over approximately six weeks and was integrated into the athletes' regular training routine. The intervention emphasized horizontally directed plyometric actions and was implemented with progressive exposure, technical supervision, adequate rest periods, and suspension criteria in case of pain, excessive fatigue, musculoskeletal discomfort, or any safety concern.
Sprint performance and sprint-related temporal-kinematic variables were assessed before and after the intervention. Field-based assessments included sprint time and video-derived sprint variables, complemented by horizontal jump performance. Because the study was conducted with minors and a small sport-specific sample, all data will be reported in aggregate form, and no individual participant data will be publicly shared.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Other
- 盲法
- None
入排标准
- 年龄范围
- 12 Years 至 13 Years（Child）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Male early-adolescent track-and-field athletes aged 12-13 years.
- •Active participation in a municipal or community-based athletics training program in Antioquia, Colombia.
- •Minimum recent experience in athletics training according to the records of the local training program.
- •Ability to complete sprint testing, jump testing, and the planned plyometric training sessions.
- •Written informed consent provided by a parent or legal guardian.
- •Written or documented assent provided by the minor participant.
排除标准
- •Current musculoskeletal injury, pain, or medical restriction that prevents sprinting, jumping, or participation in plyometric training.
- •Any cardiovascular, neurological, orthopedic, or other health condition contraindicating high-intensity physical exercise.
- •Failure to complete baseline or post-intervention assessments.
- •Absence from a substantial portion of the intervention sessions, according to the predefined adherence criteria.
- •Participation in another structured training or research intervention that could substantially affect the outcomes during the study period.
研究组 & 干预措施
Horizontal Plyometric Training
Participants completed a six-week horizontally oriented plyometric training program consisting of 12 supervised sessions integrated into their regular athletics training. The program emphasized horizontally directed jumping and bounding actions relevant to sprint acceleration and forward propulsion. Training exposure was adjusted according to participants' age, experience, and tolerance, with progressive loading, technical supervision, adequate rest intervals, and safety monitoring.
干预措施: Horizontally Oriented Plyometric Training (Other)
结局指标
主要结局
Change in 60-m Sprint Time
时间窗: Baseline and within 48-72 hours after the final intervention session.
Total time to complete a 60-m sprint, measured in seconds under field-based conditions. Lower values indicate better sprint performance.
次要结局
- Change in Sprint Split Times(Baseline and within 48-72 hours after the final intervention session.)
- Change in Video-Derived Sprint Temporal-Kinematic Variables(Baseline and within 48-72 hours after the final intervention session.)
- Change in Horizontal Jump Performance(Baseline and within 48-72 hours after the final intervention session.)
- Adverse Events During Training(From the first intervention session to the final intervention session, approximately six weeks.)
研究者
Édison Andrés Pérez Bedoya
Principal Investigator
Federal University of Vicosa