Comparison Of Isometric And Isokinetic Strength Training Effects On Physical Performance In Athletes With Knee Pain

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

COMPLETED

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-01-31

Study Completion Date

2016-11-30

Brief Summary

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Frequent sports events causing more injuries in athletes causing decline in their performance. Injuries around knee joint are common. Strength training of hamstring and quadriceps are effective tool in rehabilitation. The multi-speeds and multi-angles strength training plans were used to see the effects on symptoms and performance in athletes.

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Detailed Description

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A total of 69 athletes with knee pain were recruited and randomly divided into two groups. 50 athletes completed the training programs, 25 in each group. Data was also collected from healthy athletes for normative values. International Knee Documentation Committee subjective knee evaluation form was used to report the athlete's knee condition and severity of symptoms including pain. Biodex isokinetic system was used for isokinetic and isometric strength trainings and kinetic data collection. Physical performance of an athlete was assessed by components of fitness through two commonly used tests: Illinois agility run test and vertical jump test. The athletic single leg stability test was used to assess the stability of athletes on Biodex Balance System.

Conditions

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Knee Injuries

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Athletes were randomly assigned into two groups: Isometric (ISOM) and Isokinetic (ISOK). A coin was flipped at start of data collection for the first patient to be assigned odd number and included in isometric group. Later on odd and even numbered patients were included in specific group. Additionally, data was collected from healthy athletes doing their training at Pakistan Sports Board, called healthy control group. Due to ethical constraints knee pain athletes were not included as control subjects

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Isometric strength training group

Knee pain athletes were assessed by The International Knee Documentation Committee (IKDC) 2000 Subjective Knee evaluation form and were assigned into ISOM group. ISOM group participants were involved in isometric strengthTraining at angle of 30°,45°,60° of knee flexion for 5 maximum contraction for both hamstring and quadriceps. 10 sessions were given on alternate day basis by using Biodex Isokinetic system.

Group Type ACTIVE_COMPARATOR

isometric strength training and isokinetic strength training

Intervention Type OTHER

Isokinetic strength program included strength training at 5 different velocities from slow to fast. Participants were trained on speed of 30°/sec, 90°/sec, 150°/sec, 210°/sec and 270°/sec. Flexion and extension movements were completed with 5 repetitions at each speed.

Participants of isometric strength training group performed isometric contractions at 30°, 45° and 60° of knee flexion with five repetitions at each angle for both hamstring and quadriceps.

Isokinetic strength training group

Knee pain athletes were assessed by The International Knee Documentation Committee (IKDC) 2000 Subjective Knee evaluation form and were assigned into ISOK group isokinetic training group randomly. ISOk group participants were involved in Training at speed of 30 deg/sec, 90deg/sec, 150/deg/sec 210deg/sec, 270deg/sec 5 repetition for both hamstring and quadriceps. 10 sessions were given on alternate day basis by using Biodex Isokinetic system.

Group Type ACTIVE_COMPARATOR

isometric strength training and isokinetic strength training

Intervention Type OTHER

Isokinetic strength program included strength training at 5 different velocities from slow to fast. Participants were trained on speed of 30°/sec, 90°/sec, 150°/sec, 210°/sec and 270°/sec. Flexion and extension movements were completed with 5 repetitions at each speed.

Participants of isometric strength training group performed isometric contractions at 30°, 45° and 60° of knee flexion with five repetitions at each angle for both hamstring and quadriceps.

Healthy control group

Data for outcome parameters including Peak torque average peak torque average power agonist antagonist ratio by using biodex isokinetic system for both by isometric contraction method and isokinetic method. For performance test were recorded for healthy control of same age group to compare the training effect with healthy control values.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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isometric strength training and isokinetic strength training

Isokinetic strength program included strength training at 5 different velocities from slow to fast. Participants were trained on speed of 30°/sec, 90°/sec, 150°/sec, 210°/sec and 270°/sec. Flexion and extension movements were completed with 5 repetitions at each speed.

Participants of isometric strength training group performed isometric contractions at 30°, 45° and 60° of knee flexion with five repetitions at each angle for both hamstring and quadriceps.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* The adult athletes between ages 18 to 35 years.
* Athletes with unilateral knee pain.
* Both male and female.

Exclusion Criteria

* Athletes with bilateral knee pain and any deformity around knee were excluded from this study.
* Any other joint involvement of lower limb while assessment were also excluded from study.
* Athletes with recent history of surgeries for fractures or ligamentous reconstruction were excluded from this study.
* Patients who were medically unstable.

Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No