Effect of Pulsed Electromagnetic Field Therapy as an Adjunct Modality to Warm-up Exercise

NCT06239103 | Completed

• 1 other identifier: 202.616-T
• Study Type: interventional
• Target: 20
• Locations: 1 country
• Sites: 1

Brief Summary

The goal of this clinical trial is to assess the effectiveness of pulsed electromagnetic field therapy as an adjunct to warm-up exercises, in healthy participants. Researchers will investigate both the immediate effect of one round of pulsed electromagnetic field therapy (PEMF) and after a warm-up exercise, on participants' range-of-motion (ROM) at the knee and quadriceps' muscle stiffness, measured through shear wave elastography, an ultrasound technique. This may be useful in future interventions to protect against sports injuries. Participants will have their knee ROM and quadriceps' muscle stiffness measured thrice, once at baseline, once after PEMF/sham treatment, and once after 5 minutes of warm-up stationary bike exercises. Researchers will compare with sham treatment to see if there are any significant effects from PEMF therapy.

Conditions

Knee Range-of-motion; Quadriceps Muscle Stiffness

Outcome Measures

Primary Outcomes (1)

• Change in knee range-of-motion from baseline immediately after PEMF and after warm-up exercise, as assessed by goniometer

  A goniometer will be used to measure the knee range-of-motion: the static arm will follow a line joining the knee to the greater trochanter of the femur, and the moving arm a line from the knee to the lateral malleolus of the ankle

  From before PEMF/sham treatment to end of treatment and warm-up exercise, within 1 hour

Secondary Outcomes (1)

• Change in quadriceps muscle stiffness from baseline immediately after PEMF and after warm-up exercise, as assessed by ultrasound shear wave elastography

  From before PEMF/sham treatment to end of treatment and warm-up exercise, within 1 hour

Study Arms (2)

PEMF treatment arm

EXPERIMENTAL

Participants receive PEMF therapy. During this, the participant is seated with their right leg extended and with the bore of the PEMF machine between their knee and hip joints, with their left leg at rest. PEMF was applied at 1 mT, 15 Hz for 10 minutes.

Device: Pulsed electromagnetic field therapy

Control arm

SHAM COMPARATOR

Participants receive sham therapy, where the PEMF machine does not apply the pulsed electromagnetic waves. However, during this, the participant is kept in the same position as those in the treatment arm.

Device: Sham treatment

Interventions

Pulsed electromagnetic field therapy DEVICE

Pulsed electromagnetic field therapy for 10 minutes, using a PEMF device, at 1 mT, 15 Hz.

PEMF treatment arm

Sham treatment DEVICE

Sham treatment, using the same PEMF device

Control arm

Eligibility Criteria

• Age: 18 Years - 40 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Aged between 18 and 40
• Obtained written informed consent

You may not qualify if:

• History of major musculoskeletal or locomotor system disorder of lower limb
• History of traumatic or non-traumatic injury of lower limb
• History of surgical intervention of lower limb in the past 1 year
• Under any rehabilitation program at the time of investigation
• Contraindicated to physical exercises

Sponsors & Collaborators

• Chinese University of Hong Kong: lead

Study Sites (1)

CUHK-ORT Sports Injury Research Laboratory

Hong Kong, 000000, Hong Kong

Location

Study Officials

• Justine Tin Nok Chan

  University of Cambridge

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Medical Student Researcher

Study Record Dates

• First Submitted: January 25, 2024
• First Posted: February 2, 2024
• Study Start: August 30, 2022
• Primary Completion: September 14, 2022
• Study Completion: September 14, 2022
• Last Updated: February 2, 2024

Record last verified: 2024-02

Data Sharing

• IPD Sharing: Will not share

Locations

HK (1)