Mode Specific Effects of Isokinetic Training of Hamstring on Hamstring to Quadriceps Ratio

Sponsor

King Saud University (Other)

Overall Status

Completed

CT.gov ID

NCT05229367

Collaborator

(none)

Enrollment

Location

Arms

5.6

Actual Duration (Months)

5.4

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

Mode specificity of eccentric and concentric isokinetic training have been examined in previous studies but with conflicting results. The present study aimed to examine the mode-specific effects of eccentric and concentric isokinetic training of hamstring muscle at slow angular velocity on eccentric peak torque of hamstring (PTecc), concentric peak torque of quadriceps (PTcon), acceleration time of hamstring (AThams) and quadriceps (ATquad), deceleration time of hamstring (DThams) and quadriceps (DTquad), time to peak torque of hamstring (TPThams) and quadriceps (TPTquad), and functional Hamstring-to-Quadriceps ratio (PTecc/PTcon).

Condition or Disease	Intervention/Treatment	Phase
Muscle Strength	Other: Eccentric isokinetic training Other: Concentric isokinetic training	N/A

Detailed Description

Several studies in past have tried to examine the mode specificity of concentric and eccentric training of different muscles and at different angular velocities i.e. whether concentric training will increase the concentric strength only or both concentric and eccentric strength and whether eccentric training will increase eccentric strength only or both eccentric and concentric strength.

Since conflicting reports are available regarding mode specificity of eccentric and concentric isokinetic training therefore one study was needed that can examine the mode specificity of these training in hamstring muscles at slow angular velocity. The present study aimed to examine the mode-specific effects of six weeks of isokinetic concentric and eccentric training of the hamstring muscle at slow angular velocity on the PTecc/PTcon, AT, DT, and TPT.

Study Design

Study Type:

Interventional

Actual Enrollment :

30 participants

Allocation:

Randomized

Intervention Model:

Parallel Assignment

Intervention Model Description:

Participants were randomly divided into two groups.Participants were randomly divided into two groups.

Masking:

Double (Participant, Outcomes Assessor)

Primary Purpose:

Basic Science

Official Title:

Mode-specific Effects of Concentric and Eccentric Isokinetic Training of Hamstring Muscle at Slow Angular Velocity on Functional Hamstrings-to-quadriceps Ratio

Actual Study Start Date :

Apr 28, 2021

Actual Primary Completion Date :

Sep 13, 2021

Actual Study Completion Date :

Oct 14, 2021

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Eccentric isokinetic group In this group, eccentric isokinetic training of hamstring muscle was performed.	Other: Eccentric isokinetic training Eccentric exercises of the hamstring muscles were performed with the use of an isokinetic dynamometer device.
Active Comparator: Concentric isokinetic group In this group, concentric isokinetic training of hamstring muscle was performed.	Other: Concentric isokinetic training Concentric exercises of the hamstring muscles were performed with the use of an isokinetic dynamometer device.

Arm

Intervention/Treatment

Experimental: Eccentric isokinetic group

In this group, eccentric isokinetic training of hamstring muscle was performed.

Other: Eccentric isokinetic training

Eccentric exercises of the hamstring muscles were performed with the use of an isokinetic dynamometer device.

Active Comparator: Concentric isokinetic group

In this group, concentric isokinetic training of hamstring muscle was performed.

Other: Concentric isokinetic training

Concentric exercises of the hamstring muscles were performed with the use of an isokinetic dynamometer device.

Outcome Measures

Primary Outcome Measures

Functional Hamstring-to-quadriceps ratio (PTecc:PTcon) [6 weeks]
This ratio was calculated using eccentric peak of hamstring and concentric peak torque of quadriceps muscle

Secondary Outcome Measures

Acceleration time of hamstring (AThams) [6 weeks]
Time required by hamstring muscle to reach desired velocity was noted.
Acceleration time of quadriceps [6 weeks]
Time required by quadriceps muscle to reach desired velocity was noted.
Deceleration time of hamstring (DThams) [6 weeks]
Time required by hamstring muscle to reach zero velocity from target velocity, was noted.
Deceleration time of quadriceps [6 weeks]
Time required by quadriceps muscle to reach zero velocity from target velocity to, was noted.
Time to peak torque of hamstring [6 weeks]
Time required by hamstring muscle to reach peak torque was noted.
Time to peak torque of quadriceps [6 weeks]
Time required by quadriceps muscle to reach peak torque was noted.

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years to 28 Years

Sexes Eligible for Study:

Male

Accepts Healthy Volunteers:

Yes

Inclusion Criteria:

Healthy young males
Age between 18 to 27
Recreationally active who used to engage regularly in 1-5 hours of physical activity per week

Exclusion Criteria:

Individual presently indulged in strength training of knee.
Individuals with any kind of injury around the knee, hip, ankle, foot
Unconsolidated fractures around the knee. • Stress fractures
Subjects with the acute phase of trauma, which may interfere with the exercise regime
Subjects with cardio-respiratory problems and other medical problems like diabetes, asthma, etc.
Subjects with tendinitis and other inflammatory conditions.