Effects of High Intensity Laser Therapy in Muscle Injuries

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

24 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-12-01

Study Completion Date

2027-04-01

Brief Summary

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Muscle injuries are frequent traumatic events in daily life, particularly during sports. In sports, their incidence varies from 10% to 55% of total injuries. According to the Mueller Wohlfart classification, muscle injuries are classified into direct traumatic injuries (contusion-laceration) and indirect traumatic injuries, which are further divided into non-structural injuries (grade I and II) and structural injuries. Structural lesions are further divided into partial muscle lesions (grade III): 3 A, minor partial lesion, i.e. lesion of one or more primary bundles with a secondary bundle; 3 B, moderate partial lesion, i.e. lesion of at least one secondary bundle and with a rupture area \< 50% of the muscle surface; and (sub)total muscle injury (grade IV).

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Detailed Description

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In the acute phase, the current management of muscle injuries is essentially based on the PRICE protocol (protection, rest, ice, compression, elevation), although there are still no randomized clinical trials in the literature demonstrating its real effectiveness. Subsequently, the player undertakes rehabilitation with exercises and therapies aimed at resolving the edema, repairing the injury, strengthening the muscles and restoring athletic movements.

Biostimulations (laser therapy, diathermy, US, etc) are applied in muscle lesions for their analgesic and anti-inflammatory action, but to date there is a lack of adequate clinical evidence. The high energy laser has a great penetration force deep into the tissues and through its photochemical effects, increases mitochondrial oxidation and facilitates the formation of adenosine triphosphate (ATP), as well as inducing an increase in metabolism and blood circulation, with rapid absorption of edema and elimination of exudates. This induces an important biological action, causing muscle relaxation and inhibition of free nerve endings resulting in an immediate reduction in pain.

Preclinical studies have shown that physical therapies, such as high-energy laser therapy, improve muscle regeneration. On the other hand, to date few clinical studies have investigated the effects of biostimulations on muscle injuries. Medeiros et al. did not find benefits in the application of low energy laser in the treatment of muscle injuries, hypothesizing that a late application may have undermined the effects of biostimulation, which is fundamental in the first days of a late injury. Scaturro et al. , applying a combination of high energy laser and diathermy in association with rehabilitation treatment within 5 days of muscle injury, found positive effects on pain remission, return to sporting activity and the number of relapses. On the other hand, in this study, the contextual administration of two biostimulations (high energy laser and tecar therapy) does not allow us to discriminate the biological and clinical effects attributable to each of the two therapeutic methods.

Therefore, the aim of the present study is to investigate the effects of high intensity laser therapy in the treatment of lower limb muscle injuries.

Conditions

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Muscle Tear

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

randomized clinical trial

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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High Energy Laser Group

The multimodal high energy laser therapy treatment with thermal control (THEAL) will be delivered with an Ixyon XP device (Mectronic, Bergamo, Italy) which allows the delivery of 4 wavelengths (650 nm, 810 nm, 980 nm and 1064 nm), with continuous and pulsed mode, average power up to 30 W, administering 10 sessions every other day. The patients will simultaneously carry out the rehabilitation treatment exercises, as was expected in the control group.

Group Type EXPERIMENTAL

High Energy Laser Group

Intervention Type DEVICE

The multimodal high energy laser therapy treatment with thermal control (THEAL) will be delivered with an Ixyon XP device (Mectronic, Bergamo, Italy) which allows the delivery of 4 wavelengths (650 nm, 810 nm, 980 nm and 1064 nm), with continuous and pulsed mode, average power up to 30 W, administering 10 sessions every other day.

The patients will simultaneously carry out the rehabilitation treatment exercises, as was expected in the control group.

Exercise

Intervention Type OTHER

Daily exercise

Exercise Group

All patients will receive a rehabilitation protocol of 5 weekly sessions lasting approximately 60 minutes, for approximately 3 weeks. During the early post-injury phases, the protocol will include isometric exercises to strengthen core stability. These exercises will each be performed for 3 sets of 30 seconds, although the number of sets and repetitions may vary depending on the athlete's response.

Group Type ACTIVE_COMPARATOR

Exercise

Intervention Type OTHER

Daily exercise

Interventions

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High Energy Laser Group

The multimodal high energy laser therapy treatment with thermal control (THEAL) will be delivered with an Ixyon XP device (Mectronic, Bergamo, Italy) which allows the delivery of 4 wavelengths (650 nm, 810 nm, 980 nm and 1064 nm), with continuous and pulsed mode, average power up to 30 W, administering 10 sessions every other day.

The patients will simultaneously carry out the rehabilitation treatment exercises, as was expected in the control group.

Intervention Type DEVICE

Exercise

Daily exercise

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* presence of a grade III A muscle lesion of the lower limbs, according to the Mueller-Wohlfart classification, confirmed by ultrasound examination and occurred during sporting activity at least 5 days before inclusion in the study;
* no previous muscle injury in the last 6 months;
* signing of the written informed consent for participation in the study.

Exclusion Criteria

* previous muscle injuries or bone fractures of the lower limbs in the last 6 months;
* knee instability due to previous rupture of the knee ligaments;

• instability or previous sprain of the ankle;
* active neoplastic or infectious diseases;
* contraindications to biostimulation;
* congenital anomalies of the lower limbs.

Minimum Eligible Age

16 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No