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

Muscle Strength Clinical Trial

Official title:

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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05229367
• Other study ID #: RRC-2021-11
• Status: Completed
• Phase: N/A
• Start date: April 28, 2021
• Est. completion date: October 14, 2021

Study information

• Verified date: February 2022
• Source: King Saud University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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).

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 30
• Est. completion date: October 14, 2021
• Est. primary completion date: September 13, 2021
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 18 Years to 28 Years

Eligibility

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.

Related Conditions & MeSH terms

• Muscle Strength

Intervention

Other:
• Eccentric isokinetic training
Eccentric exercises of the hamstring muscles were performed with the use of an isokinetic dynamometer device.
• Concentric isokinetic training
Concentric exercises of the hamstring muscles were performed with the use of an isokinetic dynamometer device.

Locations

Country	Name	City	State
Saudi Arabia	King Saud University	Riyadh

Sponsors (1)

Lead Sponsor	Collaborator
King Saud University

Country where clinical trial is conducted

Saudi Arabia, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Functional Hamstring-to-quadriceps ratio (PTecc:PTcon)	This ratio was calculated using eccentric peak of hamstring and concentric peak torque of quadriceps muscle	6 weeks
Secondary	Acceleration time of hamstring (AThams)	Time required by hamstring muscle to reach desired velocity was noted.	6 weeks
Secondary	Acceleration time of quadriceps	Time required by quadriceps muscle to reach desired velocity was noted.	6 weeks
Secondary	Deceleration time of hamstring (DThams)	Time required by hamstring muscle to reach zero velocity from target velocity, was noted.	6 weeks
Secondary	Deceleration time of quadriceps	Time required by quadriceps muscle to reach zero velocity from target velocity to, was noted.	6 weeks
Secondary	Time to peak torque of hamstring	Time required by hamstring muscle to reach peak torque was noted.	6 weeks
Secondary	Time to peak torque of quadriceps	Time required by quadriceps muscle to reach peak torque was noted.	6 weeks