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IRCT20250313065062N1 IRCT 2025-05-05 Tehran University of Medical Sciences Effects of adding massage gun before or after dry needling versus dry needling alone on hamstring flexibility, strength and performance, and post-needling soreness in male amateur bodybuilders with hamstring shortness Effects of adding massage gun before or after dry needling versus dry needling alone on hamstring flexibility, strength and performance, and post-needling soreness in male amateur bodybuilders with hamstring shortness 2025-05-05 anticipated 36 Complete https://irct.ir/trial/82900 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Randomization will be performed using Block Randomization and allocation concealment will be done using sequentially numbered, opaque, sealed envelopes. This method is one of the common methods of concealing random allocation, which is known as the SNOSE method for short. The random allocation process will be performed by someone outside the research team before the study begins. Finally, each individual's study group assignment will be determined according to the contents of the envelope provided to them. Accordingly, individuals will be divided into three groups: dry needling alone, dry needling with percussion massage before, and dry needling with percussion massage after, Blinding description: A trained physiotherapist, blinded to group allocation, recorded participant characteristics including age, weight, and height and measured study variables before, immediately after, and 24 hours after the intervention. Another experienced physiotherapist performed the interventions on the dominant leg of the individual with hamstring shortening. N/A hamstring shortness. Intervention 1: Control group: Dry needling ، A physiotherapist will use sterile disposable needles (Eacu brand, Korea) for dry needling, using hygienic measures such as wearing gloves and using alcohol to disinfect the site and gloves, and then the used needles will be placed in the Safety Box. During a session, participants will be needled at three points on the hamstrings for 1 minute using the fast in–out cone-shaped technique in the prone position. Two points on the short and long heads of the biceps femoris muscle will be needled at 60% and 30% of the distance from the ischial tuberosity to the fibular head, respectively. The third point targets the semimembranosus and semitendinosus muscles at 60% of the distance from the ischial tuberosity to the medial femoral epicondyle. Intervention 2: Intervention group 1: Dry needling followed by percussion massage intervention, percussion massage intervention: Percussion massage is applied to the hamstring muscle for 5 minutes with a Booster Lightstaber (china) massage device at a speed of 3200 revolutions per minute (rpm) equivalent to a frequency of 53 Hz with a “hard ball” head. The semimembranosus and semitendinosus muscles are massaged in the first 2.5 minutes of massage and the biceps femoris muscle in the second 2.5 minutes. In the first 2.5 minutes, the massage begins from the inner side of the muscle, focusing on applying equal pressure throughout the massage. The massage is performed by moving the device from distal to proximal and from proximal to distal in a straight line for 20 seconds. In the last 2.5 minutes, the massage device is moved outward at the distal end of the muscle and the application is performed from distal to proximal and then distal. In this way, the massage for each muscle starts from the inside and ends on the outside. Intervention 3: Intervention group 2: Dry needling and before that, percussion massage intervention, percussion massage intervention: Percussion massage is applied to the hamstring muscle for 5 minutes with a Booster Lightstaber (china) massage device at a speed of 3200 revolutions per minute (rpm) equivalent to a frequency of 53 Hz with a "hard ball" head. The semimembranosus and semitendinosus muscles are massaged in the first 2.5 minutes of massage and the biceps femoris muscle in the second 2.5 minutes. In the first 2.5 minutes, the massage begins from the inner side of the muscle, focusing on applying equal pressure throughout the massage. The massage is performed by moving the device from distal to proximal and from proximal to distal in a straight line for 20 seconds. In the last 2.5 minutes, the massage device is moved outward at the distal end of the muscle and the application is performed from distal to proximal and then distal. In this way, the massage for each muscle starts from the inside and ends on the outside. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is ...
public Mohsen Ghoorchibeigi
Tehran medical University dormitory for men , affront of 16th Street of kargar shomali , amirabad
Tehran Iran (Islamic Republic of) 1439955975 +98 21 8835 2176 mohsenghoorchibeigi@gmail.com Tehran University of Medical Sciences scientific Dr. Kazem Malmir
Enghelab St., Pich shemiran , Corner of Safi Alishah St., Faculty of Rehabilitation
Tehran Iran (Islamic Republic of) 1148965111 +98 21 7753 3939 kmalmir@tums.ac.ir Tehran University of Medical Sciences Iran (Islamic Republic of) Male amateur bodybuilders with at least three two-hour training sessions per week Age range 18 to 40 years Hamstring shortening ≥20 degrees in the dominant leg, determined by active knee extension testing Body mass index (BMI) between 18.5 and 29.9 kg/m2 18 years 40 years Male Use of nonsteroidal anti-inflammatory drugs, analgesics, or muscle relaxants during the study period Having any contraindications for dry needling, including, medical emergency or acute medical condition, local infection, lymphedema, coagulation disorders such as hemophilia, epilepsy, metal sensitivity (dry needling) Having any contraindications for percussive massage, including varicose veins, broken bones, areas with blood clots Back pain or radicular pain within the past 3 months History of back, hip, or knee surgery within the past year of hamstring strain within the past 3 months History of orthopedic or neurological diseases in the lower extremities Rehabilitation Rehabilitation Rehabilitation Control group: Dry needling ، A physiotherapist will use sterile disposable needles (Eacu brand, Korea) for dry needling, using hygienic measures such as wearing gloves and using alcohol to disinfect the site and gloves, and then the used needles will be placed in the Safety Box. During a session, participants will be needled at three points on the hamstrings for 1 minute using the fast in–out cone-shaped technique in the prone position. Two points on the short and long heads of the biceps femoris muscle will be needled at 60% and 30% of the distance from the ischial tuberosity to the fibular head, respectively. The third point targets the semimembranosus and semitendinosus muscles at 60% of the distance from the ischial tuberosity to the medial femoral epicondyle. Intervention group 1: Dry needling followed by percussion massage intervention, percussion massage intervention: Percussion massage is applied to the hamstring muscle for 5 minutes with a Booster Lightstaber (china) massage device at a speed of 3200 revolutions per minute (rpm) equivalent to a frequency of 53 Hz with a “hard ball” head. The semimembranosus and semitendinosus muscles are massaged in the first 2.5 minutes of massage and the biceps femoris muscle in the second 2.5 minutes. In the first 2.5 minutes, the massage begins from the inner side of the muscle, focusing on applying equal pressure throughout the massage. The massage is performed by moving the device from distal to proximal and from proximal to distal in a straight line for 20 seconds. In the last 2.5 minutes, the massage device is moved outward at the distal end of the muscle and the application is performed from distal to proximal and then distal. In this way, the massage for each muscle starts from the inside and ends on the outside. Intervention group 2: Dry needling and before that, percussion massage intervention, percussion massage intervention: Percussion massage is applied to the hamstring muscle for 5 minutes with a Booster Lightstaber (china) massage device at a speed of 3200 revolutions per minute (rpm) equivalent to a frequency of 53 Hz with a "hard ball" head. The semimembranosus and semitendinosus muscles are massaged in the first 2.5 minutes of massage and the biceps femoris muscle in the second 2.5 minutes. In the first 2.5 minutes, the massage begins from the inner side of the muscle, focusing on applying equal pressure throughout the massage. The massage is performed by moving the device from distal to proximal and from proximal to distal in a straight line for 20 seconds. In the last 2.5 minutes, the massage device is moved outward at the distal end of the muscle and the application is performed from distal to proximal and then distal. In this way, the massage for each muscle starts from the inside and ends on the outside. Hamstring muscle flexibility. Timepoint: Before the intervention, immediately after the intervention, and 24 hours after the intervention. Method of measurement: With goniometer in active knee extension test 90/90. Hamstring stretch tolerance angle degree. Timepoint: Before the intervention, immediately after the intervention, and 24 hours after the intervention. Method of measurement: With goniometer in active knee extension test 90/90. Maximum hamstring strength in isometric contraction at 45 and 60 degree knee angles. Timepoint: Before the intervention, immediately after the intervention, and 24 hours after the intervention. Method of measurement: Dynamometer. Hamstring to quadriceps contraction ratio at 45 and 60 degree knee angles. Timepoint: Before the intervention, immediately after the intervention, and 24 hours after the intervention. Method of measurement: Dynamometer and ratio formula. Performance. Timepoint: Before the intervention, immediately after the intervention, and 24 hours after the intervention. Method of measurement: Triple hop test. Dry needling soreness. Timepoint: Before the intervention, immediately after the intervention, and 24 hours after the intervention. Method of measurement: Numerical pain rating scale. Pressure pain threshold. Timepoint: Before the intervention, immediately after the intervention, and 24 hours after the intervention. Method of measurement: Algometer. Tehran University of Medical Sciences Approved 2025-03-11 Ethics Committee of the Faculty of Nursing and Midwifery and the Faculty of Rehabilitation - Tehran Shahrak Qods (West), between South Flamack and Zarafshan, Simay Iran Street - Central Headquarters of the Ministry of Health, Treatment and Medical Education, Block A, 13th Floor Tehran Tehran Iran (Islamic Republic of)