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Comparing the effects of local, functional, and mental fatigue protocols on muscle strength, balance and performance in healthy athletes and with anterior cruciate ligament reconstruction.

Comparing the effects of local, functional, and mental fatigue protocols on isokinetic strength, balance, and performance in healthy athletes and with anterior cruciate ligament reconstruction

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
IRCT
Registry ID
IRCT20191214045729N2
Enrollment
24
Registered
2025-06-24
Start date
2025-08-06
Completion date
Unknown
Last updated
2025-07-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anterior Cruciate Ligament Reconstruction.

Interventions

Intervention 1: Intervention group one: Local fatigue: To induce localized fatigue, the Biodex isokinetic dynamometer (System 4 Pro™ model) will be used. In this experiment, each participant will unde

Sponsors

The University of Tehran
Lead Sponsor

Eligibility

Sex/Gender
Male
Age
18 Years to 30 Years

Inclusion criteria

Inclusion criteria: The samples were from athletes in sports with shearing, jumping, and landing movement patterns who had regular sports activity and at least 3 years of experience. The mechanism of ACL injury is non-contact and occurs in jumping and landing movement patterns or shearing movements. The surgical procedure is anterior cruciate ligament reconstruction with hamstring autograft. Have completed various levels of rehabilitation and rehabilitation courses. The physical activity level of individuals after the rehabilitation process and return to sports should be a score of 6 or higher based on the Tigner questionnaire. Full range of motion in knee flexion and extension movements Body mass index between 18 - 25

Exclusion criteria

Exclusion criteria: Any neurological, cardiovascular, metabolic, rheumatic or vestibular disease. Frequent use of painkillers and drugs that affect the person's balance Consumption of any caffeine, energy drinks, or alcohol 24 hours before performing the fatigue protocol Performing intense physical activity 24 hours before the implementation of the fatigue protocol Having any history of injury or surgery to the hip, ankle, foot, or opposite knee injury Having any mental health problems, such as depression or anxiety

Design outcomes

Primary

MeasureTime frame
Quadriceps to hamstring strength ratio. Timepoint: At the beginning of the study (before the start of the intervention) and 7, 14 and 21 days after the start of the study (after each fatigue protocol applied at 7-day intervals). Method of measurement: Isokinetic.

Secondary

MeasureTime frame
Knee Flexion and Extensor Peak Torque. Timepoint: At the beginning of the study (before the start of the intervention) and 7, 14 and 21 days after the start of the study (after each fatigue protocol applied at 7-day intervals). Method of measurement: Isokinetic.;Landing performance. Timepoint: At the beginning of the study (before the start of the intervention) and 7, 14 and 21 days after the start of the study (after each fatigue protocol applied at 7-day intervals). Method of measurement: Landing Error Scoring System.;Joint Position Sense. Timepoint: At the beginning of the study (before the start of the intervention) and 7, 14 and 21 days after the start of the study (after each fatigue protocol applied at 7-day intervals). Method of measurement: Isokinetic.;Postural Stability. Timepoint: At the beginning of the study (before the start of the intervention) and 7, 14 and 21 days after the start of the study (after each fatigue protocol applied at 7-day intervals). Method of measurement: Biodex Balance System.

Countries

Iran (Islamic Republic of)

Contacts

Public ContactMohammad Hamzeh Shalamzari

The University of Tehran

m.hamzeh13755@ut.ac.ir+98 21 6111 8928

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026