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Effects of Low-load Resistance Training With Blood Flow Restriction in Patients With Achilles Tendinopathy

Status: Recruiting

Location: See location...

Intervention Type: Other

Study Type: Interventional

Study Phase: Not Applicable

SUMMARY

Midportion Achilles tendinopathy (MAT) is a common overuse injury of the lower extremity characterized by the presence of pain, restricted function and interruption of sport activities. Conservative management of MAT has been suggested as the first line of treatment. Actually, there are several exercise programs with beneficial effects on pain and function among which high load training stands out. However, this training modality is inherently difficult to implement in certain populations and pathological conditions due to their inability to tolerate this mechanical stress. In this sense, low load training with blood flow restriction (BFR-LLT) emerges as an effective option in producing hypertrophic adaptations with low intensities (30% 1RM). However, this training modality has not yet been studied in tendon pathology. The aim of this study is to evaluate the potential clinical effects of BFR-LLT in comparison with HLT in patients with chronic MAT.

Eligibility

Participation Requirements

Sex: All

Minimum Age: 18

Maximum Age: 50

Healthy Volunteers: f

View:

• Clinical diagnosis of unilateral MAT.

• Achilles pain \> 3 months.

• Age ranging between 18 to 50 years, both genders.

• Read and speak Spanish well enough to provide informed consent and follow study instructions.

• Can attend in-clinic treatments 2-3 x weekly for the next 12 weeks.

Locations

Other Locations

Argentina

University of Gran Rosario

RECRUITING

Rosario

Contact Information

Primary

Gonzalo Elias, PT

gelias@ugr.edu.ar

543416051190

Backup

Leonardo Intelangelo, MSc, PT

543416758135

Time Frame

Start Date: 2022-04-29

Estimated Completion Date: 2026-08

Participants

Target number of participants: 52

Treatments

Experimental: Low load training with blood flow restriction (LL-BFR) group.

All participants in this arm will use a BFR tourniquet system during the execution of two exercises, unilateral dynamic standing and sitting calf-raises, with a training load of 20% 1 repetition maximum (RM), being progressively increased by 5% every four weeks. Dynamic strength testing will be implemented to re-evaluate the current strength level and adequately adjust the load, using the PowerLift app, which was validated by Balsalobre-Fernandez in 2017. For each exercise, each participant will perform four sets with 30 repetitions the first set and 15 repetitions in the subsequent three sets, counting a total of 75 repetitions. All exercises will be performed in full range of motion (full plantar flexion to full dorsal flexion), with an interset rest period of 1 minute. Three minutes rest was provided between exercises.

Active_comparator: High load training (HLT) group.

The HLT group will performed the same exercises than the BFR group, however with a training load of 70% 1RM, being progressively increased by 5% every four weeks from 70% to 80%. This protocol will consist of three sets of 6-12 repetitions. Dynamic strength testing will be implemented to re-evaluate the current strength level and adequately adjust the load, using the PowerLift app, which was validated by Balsalobre-Fernandez in 2017. All exercises will be performed in full range of motion, with an interset rest period of 1 minute and a rest period between exercises of 3 minutes.

Related Therapeutic Areas

Tendinitis

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