]>
IRCT20260615069818N1 IRCT 2026-07-08 University of Guilan The effect of dual-task plyometric and complex training on neuromuscular and ‎athletic performance in basketball players The effect and durability of dual-task plyometric and complex training on neuromuscular and ‎athletic performance in basketball players identified as ankle sprain copers 2026-06-22 anticipated 48 Complete https://irct.ir/trial/90943 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: Eligible participants will be randomly assigned to one of three groups: a dual‑task plyometric training group, a complex training group, or a control group. Randomization will be performed using a computer‑generated sequence created at https://www.randomizer.org with a 1:1:1 allocation ratio using random permuted blocks of sizes 3 and 6 to ensure balanced group sizes throughout the trial. The randomization sequence will be generated prior to the commencement of the study by an independent researcher not involved in participant recruitment, baseline assessments, or intervention delivery. The allocation sequence will be concealed using sequentially numbered, opaque, sealed envelopes. After completion of all baseline assessments, the assessor will open the next envelope in sequence to reveal the participant’s group assignment. The researcher responsible for generating the sequence and preparing the envelopes will not participate in any subsequent data collection or intervention. Therefore, both outcome assessors and intervention providers will remain blinded to the allocation sequence, ensuring adequate allocation concealment and minimizing selection bias. N/A Sprain of ankle. Intervention 1: Intervention group: Complex training group: Participants will perform an 8‑week complex training protocol, two sessions per week, 60 minutes each session. Each session includes 4 complexes (4 resistance exercises and 4 plyometric exercises), with warm‑up and cool‑down. Intervention 2: Intervention group: Dual‑task plyometric training group: Participants will perform an 8‑week protocol, two sessions per week, 45 minutes each session, combining plyometric exercises with a cognitive task (backward counting in 4 difficulty levels), including warm‑up and cool‑down. Intervention 3: Control group: The control group received no additional intervention, except for the same warm‑up as the other groups, and continued their regular basketball training. Yes - There is a plan to make this available What will be shared: Some of the images used in the study will be corrupted. When: From 01/09/2026 to 12 months later To whom: Researcher Conditions: An official email should be used to contact the corresponding author. Where to obtain: corresponding author. How to obtain: official email Comments:
public Hassan Daneshmandi
Guilan University, Km 5, Persian Gulf Highway, Rasht, Iran.
Rasht Iran (Islamic Republic of) 4199613776 +98 912 079 7462 kimia.karimi.ce@gmail.com University of Guilan scientific Kimia Karimi
Faculty of Physical Education and Sports Sciences, University of Guilan Complex, Persian Gulf Highway (Km. 5 of Rasht-Qazvin Road), Rasht, Iran.
Rasht Iran (Islamic Republic of) ۴۱۹۹۶۱۳۷۷۶ +98 919 989 8074 kimia.karimi.ce@gmail.com University of Guilan Iran (Islamic Republic of) Amateur female basketball players aged 14 to 17 years. At least three years of participation in regular basketball training at organized clubs. History of at least one lateral ankle sprain (requiring a minimum of one week of rest) that occurred more than 12 months ago. No history of ankle "giving way" (instability episodes) in the past 12 months. No participation in an ankle rehabilitation program. Achieving a score of 25 or higher on the Cumberland Ankle instability instrument. Achieving a score of less than 5 on the ankle measurement tool. Ability to perform a squat with 150% of body weight to qualify for plyometric training. Ability to stand on one leg and perform 25% and 50% single-leg squats, with eyes open and closed, for 30 seconds each, without tremors or wobbling. Ability to perform a standing long jump equal to the individual's height. Absence of musculoskeletal abnormalities in the trunk, upper extremities, or lower extremities that could affect the research. Absence of visual, vestibular, or neuromuscular disorders that could affect the research. 14 years 17 years Female More than two consecutive absences or three non-consecutive absences during the study. Occurrence of injury (any physical complaint) resulting from training. S93.4 Sprain of ankle Rehabilitation Rehabilitation Other Intervention group: Complex training group: Participants will perform an 8‑week complex training protocol, two sessions per week, 60 minutes each session. Each session includes 4 complexes (4 resistance exercises and 4 plyometric exercises), with warm‑up and cool‑down. Intervention group: Dual‑task plyometric training group: Participants will perform an 8‑week protocol, two sessions per week, 45 minutes each session, combining plyometric exercises with a cognitive task (backward counting in 4 difficulty levels), including warm‑up and cool‑down. Control group: The control group received no additional intervention, except for the same warm‑up as the other groups, and continued their regular basketball training. Dynamic Balance. Timepoint: Measurements will be performed at three time points: baseline (before the intervention), immediately after the eight‑week intervention period, and at follow‑up (three weeks after the cessation of training). Method of measurement: Dynamic balance will be assessed using the Y Balance Test. The participant stands on one leg at the center of the device and reaches with the other leg in three directions: anterior, posteromedial, and posterolateral. The reach distance is recorded in centimeters and normalized to the participant's limb length. The test is performed on both right and left legs, and the average of three successful trials for each direction is recorded as the final score. Muscle Strength. Timepoint: Measurements will be performed at three time points: baseline (before the intervention), immediately after the eight‑week intervention period, and at follow‑up (three weeks after the cessation of training). Method of measurement: Muscle strength of the ankle plantarflexor, dorsiflexor, and evertor muscles will be measured using a hand‑held dynamometer. The participant performs a maximal voluntary isometric contraction against the dynamometer for five seconds, and the peak force is recorded in Newtons. Three trials are performed for each muscle group, and the average of the three trials is used for analysis. Muscle Power. Timepoint: Measurements will be performed at three time points: baseline (before the intervention), immediately after the eight‑week intervention period, and at follow‑up (three weeks after the cessation of training). Method of measurement: Muscle power will be assessed using the countermovement jump test performed on a force plate or jump mat. The participant starts from a standing position, performs a rapid countermovement to a self‑selected depth, and then jumps vertically as high as possible. Jump height is calculated from flight time or ground reaction force data, and the highest of three trials is recorded. Functional Ankle Instability. Timepoint: Measurements will be performed at three time points: baseline (before the intervention), immediately after the eight‑week intervention period, and at follow‑up (three weeks after the cessation of training). Method of measurement: Functional ankle instability will be assessed using the Cumberland Ankle Instability Tool, a validated nine‑item questionnaire that evaluates ankle function, giving sensation, and perceived instability during daily and sporting activities. The total score ranges from 0 to 30, with lower scores indicating greater instability. Landing Quality. Timepoint: Measurements will be performed at three time points: baseline (before the intervention), immediately after the eight‑week intervention period, and at follow‑up (three weeks after the cessation of training). Method of measurement: Landing quality will be assessed using the Landing Error Scoring System, a standardized observational tool that evaluates jump‑landing biomechanics. The participant performs a drop‑jump from a 30‑cm box, immediately followed by a maximum vertical jump, and lands with both feet. The movement is video‑recorded from the frontal and sagittal planes, and trained assessors score specific errors, including knee valgus, trunk flexion, and foot placement. Lower total error scores indicate better landing quality. Knee Joint Position Sense (Proprioception). Timepoint: Measurements will be performed at three time points: baseline (before the intervention), immediately after the eight‑week intervention period, and at follow‑up (three weeks after the cessation of training). Method of measurement: Knee joint position sense will be assessed using a joint position sense test performed on an isokinetic dynamometer. The participant's knee is passively moved to a target angle (e.g., 30° or 60° of flexion), held for five seconds, and then returned to the starting position. The participant is then asked to actively reproduce the target angle. The absolute angular error between the target angle and the reproduced angle is recorded in degrees. Three trials are performed for each target angle, and the average error is used for analysis. Hopping Performance. Timepoint: Measurements will be performed at three time points: baseline (before the intervention), immediately after the eight‑week intervention period, and at follow‑up (three weeks after the cessation of training). Method of measurement: Hopping performance will be assessed using the triple hop test. The participant stands on the test leg and performs three consecutive maximal forward hops, landing on the same leg each time. The total distance covered from the starting line to the final landing point is measured in centimeters. Two trials are performed on each leg, and the longest distance for each leg is recorded for analysis. Technical Skill. Timepoint: Measurements will be performed at three time points: baseline (before the intervention), immediately after the eight‑week intervention period, and at follow‑up (three weeks after the cessation of training). Method of measurement: Technical skills will be evaluated using sport‑specific tests appropriate to the participants' competitive level. These include a passing accuracy test (number of successful passes to a target out of 10 attempts), a dribbling speed test (time to complete a slalom course), and a shooting accuracy test (number of successful shots on target out of 10 attempts). All tests are performed three times, and the average score is used for analysis. University of Guilan Approved 2026-05-25 Research Ethics Committees of University of Guilan 5th Kilometer of Persian Gulf Highway, Rasht, Guilan Province, Iran Rasht Guilan Iran (Islamic Republic of)