Contracture of Muscle, Thigh
Conditions
Keywords
Pain, Delayed onset muscle soreness, Pulsed electromagnetic field, Marathon
Brief summary
Delayed onset muscle soreness is defined as the sensition of pain and discomfort in skeletal muscles that occurs after eccentric muscle actions or strenuous exercise like a marathon.
Detailed description
There is a growing body of clinical evidence which shows that noninvasive, nonpharmacologic pulsed electromagnetic fields have many clinical effects. Pulsed electromagnetic fields have shown to reduce pain in different groups of patients. This concerns patients with osteoarthritis, rheumatoid arthritis, diabetic neuropathy, fibromyalgia, distal radius fractures, pelvic pain and postoperative patients. A marathon is a muscular strain. Physiologic effects of a marathon involves muscular and connective tissue damage which initiates an inflammatory response as well as release of metabolic factors like lactate and free radicals, intracellular metabolites and by-products of proteolysis. The objective of this study was to investigate the efficacy of pulsed electromagnetic fields compared to placebo in reducing delayed onset muscle soreness in marathon runners.
Interventions
DEVICEPulsed electromagnetic field devices
Every person received two active devices. The devices emitted 2-ms bursts of 27.12 MHz sinusoidal waves repeating at 2 bursts/s. Peak magnetic field intensity was 0.05 G which induced an average electric field of 10 mV in the tissue with an effect of 7.3 mW/cm3.
Sponsors
Northern Orthopaedic Division, Denmark
Study design
Allocation
RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Completion of a marathon * Age \> 18 years
Exclusion criteria
\- Unable to read and speak Danish
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Thigh pain by walking | 5 days | Primary outcome of thigh pain during semi-squat during 5 days following the marathon showed a significantly lower pain among the active group compared to the placebo group. The outcome was thigh muscle pain measured on a 10 cm visual analog scale during a squat of 90 degrees three times a day; when they woke up, at 12 pm and 8 pm. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Registration of injuries and symptoms from the musculoskeletal system. | 5 days | The group that received active pulsed electromagnetic field was running for a significant longer time the first day following the marathon. |
Countries
Denmark
Outcome results
None listed