The main goal of this randomized controlled trial (RCT) is to evaluate the chronic effects of using instep weights on technical, physical (conditional), and perceptual parameters in amateur male soccer players. The secondary objective will be to propose a training methodology using instep weights to enhance athletic performance. The following hypotheses are formulated based on the objectives outlined previously. Hypothesis 1: the use of instep weights will enhance performance in ball striking speed, change of direction ability, and repeated sprint capacity. Hypothesis 2: the use of instep weights will negatively affect performance in ball striking accuracy and ball control. Hypothesis 3: the use of instep weights will not produce adverse effects on perceived exertion, groin pain or reduce maximal adductor, quadriceps and hamstring muscle contraction values.
Age range
16 Years – 19 Years
Sex
MALE
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Hip and Groin Outcome Score (HAGOS)
Timeframe: Pre-intervention (first day of week 1), mid-intervention (first day of week 5), and post-intervention (first day of week 9)
Subjective perceptual well-being questionnaire measures change: RPE
Timeframe: The questionnaire will be administered within the first 15-20 minutes following the conclusion of each training session.
Ball Striking Accuracy Test
Timeframe: Pre-intervention (first day of week 1), mid-intervention (first day of week 5), and post-intervention (first day of week 9)
Ball Striking Velocity Test
Timeframe: Pre-intervention (first day of week 1), mid-intervention (first day of week 5), and post-intervention (first day of week 9)
Change of Direction (COD) and Ball Control
Timeframe: Pre-intervention (first day of week 1), mid-intervention (first day of week 5), and post-intervention (first day of week 9)
Repeated Sprint Ability (RSA)
Timeframe: Pre-intervention (first day of week 1), mid-intervention (first day of week 5), and post-intervention (first day of week 9)
Adductors Maximum Voluntary Contraction (MVC)
Timeframe: Pre-intervention (first day of week 1), mid-intervention (first day of week 5), and post-intervention (first day of week 9)
Knee extensors Maximum Voluntary Contraction (MVC)
Timeframe: Pre-intervention (first day of week 1), mid-intervention (first day of week 5), and post-intervention (first day of week 9)
Knee flexors Maximum Voluntary Contraction (MVC)
Timeframe: Pre-intervention (first day of week 1), mid-intervention (first day of week 5), and post-intervention (first day of week 9)
Body mass
Timeframe: Pre-intervention (first day of week 1), mid-intervention (first day of week 5), and post-intervention (first day of week 9)