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Comparison of the Effects of Selected Training Methods and SIS Stimulation on Balance, Motor Tests, and Strength

NCT07492732 · Status: RECRUITING · Type: OBSERVATIONAL · Enrollment: 30

Last updated 2026-03-25

No results posted yet for this study

Summary

The purpose of this study is to evaluate the effects of four-week training interventions-Nordic Hamstring Exercise, plyometric training, and neuromuscular training-combined with Super Inductive Stimulation (SIS) on hamstring muscle strength, balance, and motor performance.

Conditions

  • Hamstring Injury

Interventions

OTHER

Nordic Hamstring Exercises + SIS stimulation

Nordic Hamstring Exercise training lasts 4 weeks, during which the participant performs 3 sets, each consisting of 3 repetitions of the NHE. After each set, a 2-minute passive rest period follows, during which the participant recovers. In the first week, the participant trains under the supervision of the instructor, while in the following three weeks the exercises are performed at home after prior instruction.

OTHER

Plyometric traning + SIS stimulation

The intervention lasts 4 weeks, during which participants train three times per week. The program consists of single-leg and double-leg jumps, vertical jumps, lateral jumps, and forward jumps, all performed on a stable surface. A principle of progressive overload is applied, with gradual increases in training intensity, volume, and jump height. The progression begins with lower intensity exercises, single-joint movements, and less complex techniques, and advances to higher intensity exercises, multi-joint movements, and more complex techniques.

OTHER

Neuromuscular traning + SIS stimulation

The intervention lasts 4 weeks, with participants training three times per week. The program focuses on improving dynamic stability and incorporates the use of BOSU equipment. Exercises include multitask movements performed on unstable surfaces as well as exercises with eyes closed. During the first week, exercises are performed on a stable surface to improve balance while standing on one leg with eyes open and closed. In the following weeks, exercises on unstable surfaces are introduced, emphasizing the maintenance of proper posture on either one or both legs during multitask activities. In the third week, dynamic exercises on unstable surfaces are added, such as single-leg squats. In the final week, jumps and hops are incorporated. To further increase difficulty, additional load is introduced in the form of medicine balls weighing between 2 and 8 kilograms.

OTHER

Super Inductive Stimulation (SIS) Intervention

uses a high-intensity electromagnetic field (28 kT/s). The stimulus, induced by a coil placed in the applicator, generates depolarization of neuromuscular tissue

Sponsors & Collaborators

  • Gdansk University of Physical Education and Sport

    lead OTHER

Principal Investigators

  • Ewelina Perzanowska, PhD · Department of Kinesytherapy

Eligibility

Min Age
19 Years
Max Age
40 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-03-15
Primary Completion
2026-05-01
Completion
2026-05-01

Countries

  • Poland

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07492732 on ClinicalTrials.gov