Clinical trial NCT06239103: Effect of Pulsed Electromagnetic Field Therapy as an Adjunct Modality to Warm-up Exercise
Official title: Effectiveness of Pulsed Electromagnetic Field Therapy as an Adjunct Modality to Warm-up Exercise: a Randomized Controlled Trial
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Knee Range-of-motion
Quadriceps Muscle Stiffness
Lead sponsor: Chinese University of Hong Kong
Sponsor class: OTHER
First posted: 2024-02-02
Enrollment: 20
Sex: ALL
Minimum age (years): 18
Maximum age (years): 40
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

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.

Detailed description: 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.

Eligibility criteria: 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

Primary outcomes:
measure: Change in knee range-of-motion from baseline immediately after PEMF and after warm-up exercise, as assessed by goniometer
timeFrame: From before PEMF/sham treatment to end of treatment and warm-up exercise, within 1 hour
Secondary outcomes:
measure: Change in quadriceps muscle stiffness from baseline immediately after PEMF and after warm-up exercise, as assessed by ultrasound shear wave elastography
timeFrame: From before PEMF/sham treatment to end of treatment and warm-up exercise, within 1 hour
Other outcomes:
Locations:
city: Hong Kong
country: Hong Kong
facility: CUHK-ORT Sports Injury Research Laboratory
Study officials:
affiliation: University of Cambridge
name: Justine Tin Nok Chan
role: PRINCIPAL_INVESTIGATOR
References: