CUHK-ORT Sports Injury Research Laboratory
Hong Kong, 000000
Completed
NCT Number: NCT06239103
Effect of Pulsed Electromagnetic Field Therapy as an Adjunct Modality to Warm-up Exercise
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.
Completed
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Notify MeKey information
Conditions
Age range
18 year–40 year
Sex eligibility
All sexes
Study type
Interventional
Phase
Not applicable
Primary location
About this study
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.
- Baseline measurement of knee ROM and quadriceps' muscle stiffness
- Receive PEMF for ten minutes around their knee joint
- Interim measurement of knee ROM and quadriceps' muscle stiffness
- Perform 5 minutes of warm-up exercise on a stationary bike
- Final measurement of knee ROM and quadriceps' muscle stiffness
Researchers will compare with sham treatment to see if there are any significant effects from PEMF therapy.
Who can participate
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
- Aged between 18 and 40
- Obtained written informed consent
Exclusion criteria
- 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
Treatment and study plan
Pulsed Electromagnetic Field Therapy
DevicePulsed electromagnetic field therapy for 10 minutes, using a PEMF device, at 1 mT, 15 Hz.
Sham treatment
DeviceSham treatment, using the same PEMF device
Primary outcomes
-
Change in knee range-of-motion from baseline immediately after PEMF and after warm-up exercise, as assessed by goniometer
Time frame: From before PEMF/sham treatment to end of treatment and warm-up exercise, within 1 hour
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
Secondary outcomes
-
Change in quadriceps muscle stiffness from baseline immediately after PEMF and after warm-up exercise, as assessed by ultrasound shear wave elastography
Time frame: From before PEMF/sham treatment to end of treatment and warm-up exercise, within 1 hour
Ultrasound imaging and shear wave elastography will be used to measure the stiffness of the three superficial quadriceps muscles (vastus medialis, vastus lateralis and rectus femoris). Markings will be made to standardise the position of scanning. Ultrasound imaging will be used to verify the muscle being scanned. After shear wave is applied and a stable image is obtained, Young's modulus will be measured as a measure of muscle stiffness.
Sponsors and collaborators
Lead sponsor
Chinese University of Hong Kong
Other
Registry information
Official study title
Effectiveness of Pulsed Electromagnetic Field Therapy as an Adjunct Modality to Warm-up Exercise: a Randomized Controlled Trial
Important dates
- Study start
- 2022
- Primary completion
- 2022
- Study completion
- 2022
- First posted
- Feb 2, 2024
- Registry last updated
- Feb 2, 2024
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.