Does Short-Term Eccentric Strengthening With Elastic Bands Improve Hip Adductor Strength in Young Basketball Players?
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 21
- 试验地点
- 1
- 主要终点
- Maximal Eccentric Hip Adduction Strength (EHAD)
研究概览
简要总结
Here is the complete Brief Summary entry in a single paragraph, written in plain language, and excluding the study results (as requested), but maintaining academic rigor in describing the study design:
The purpose of this study is to evaluate the effect of a 4-week short-term eccentric strengthening program using elastic bands on both hip adductor muscle strength and agility performance in young male basketball players. For this randomized controlled trial, twenty-one healthy young male athletes were separated by chance into two conditions: a training group, which performed the 4-week elastic band protocol in addition to their regular basketball training, and a control group, which engaged exclusively in their routine training. The primary measurements for comparison were maximal eccentric and isometric hip adduction strength (using a hand-held dynamometer) and the agility T-test. It is hypothesized that this targeted eccentric strengthening will lead to a significant enhancement of both hip adduction strength and overall athletic performance in the intervention group
详细描述
The incidence of lower-limb and groin injuries in professional basketball is significant, with weak hip adductor strength identified as a major risk factor. While eccentric strengthening programs have shown promise in athletic populations, there is a clear gap in the literature regarding the effectiveness of short-term hip-adduction strengthening using available tools like elastic bands in young basketball players. This study was thus designed as a rigorous randomized controlled trial to investigate this specific intervention.
This study was a 4-week Interventional Randomized Controlled Trial (RCT) involving 21 healthy young male basketball players. Participants were recruited from a single sub-elite team and were excluded if they had any history of lower-limb injury (knee, hip, groin, lower back) in the preceding six months, or if they had performed any systematic hip adductor exercises during that period. Participants were randomized into two groups, paired based on their initial isometric hip adduction force. The Training Group (TG) conducted a supervised hip adduction protocol using Tuber-Band elastic bands. This program was performed 2-3 times per week for 4 weeks, in addition to their regular basketball training. The exercise involved a full range of motion in a standing position, incorporating three distinct contraction phases: a 3-second concentric contraction, a 2-second isometric hold, and a 3-second eccentric return phase. The load was individually adjusted to the 8-15 Repetition Maximum (RM) target to ensure progressive resistance throughout the program.
All measurements were performed pre- and post-intervention by an experienced rater. Primary outcome measures included maximal eccentric hip adduction strength (EHAD) and agility T-test time. Secondary outcome measures included maximal isometric hip adduction strength (IHAD) and isometric hip abduction strength (IHAB).
Strength was quantified using a hand-held dynamometer (HHD), performing a make test for isometric strength and a break test for eccentric strength. Agility was assessed objectively using photocell gates for the T-test. Data were analyzed using a 2×2 Analysis of Variance (ANOVA) with repeated measures (group × time) to assess training-related effects. Effect sizes (Cohen's d) were also calculated and reported.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 15 Years 至 18 Years（Child, Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Healthy young male basketball players.
- •Must be a participant in a sub-elite basketball team.
- •Age: 15-18 years
排除标准
- •Injury and/or pain in the knee, hip, groin, and/or lower back within the last six months
- •Previous history of hip-adductor exercises performed in the preceding six months
研究组 & 干预措施
Training group, Elastic Band Training Group, Eccentric Strengthening Group
Four-week eccentric and isometric hip-adduction training using elastic bands. Training sessions were supervised group sessions performed 2-3 times per week (2x/week in week 1; 3x/week in weeks 2-4) prior to regular basketball training. The exercise was performed in a standing position using elastic bands. Each repetition involved a 3-second concentric contraction, a 2-second isometric contraction, and a 3-second eccentric (hip-adduction) movement until full hip-abduction. The training load progressed from 3 sets of 15 RM in week 1, to 3 sets of 10 RM in weeks 2-3, and finally 3 sets of 8 RM in week 4. Both legs were trained
干预措施: Eccentric Hip Adductor Strengthening with Elastic Bands (Behavioral)
Contro group (CG), Regular Training Control
The Control Group (CG) continued with their regular basketball training. This included five basketball training sessions and one competitive game per week, which was the same frequency as the training group.
结局指标
主要结局
Maximal Eccentric Hip Adduction Strength (EHAD)
时间窗: Baseline (Pre-intervention) and 4 Weeks (Post-intervention)
Maximum force (in kilograms) produced during an eccentric contraction of the hip adductor muscles, measured using a hand-held dynamometer (HHD) in a side-lying position on the dominant leg.
次要结局
- Maximal Isometric Hip Adduction Strength (IHAD)(Baseline (Pre-intervention) and 4 Weeks (Post-intervention))
- Isometric Hip Abduction Strength (IHAB)(Baseline (Pre-intervention) and 4 Weeks (Post-intervention))
- Agility T-test Time(Baseline (Pre-intervention) and 4 Weeks (Post-intervention))
研究者
Nebojša Trajković
Associate Professor
University of Nis