Effects of Hamstring Training in Different Modes on Stabilizing Knee Joints With Anterior Drawer Laxity

NCT01170546 | Completed Results DMC

• 1 other identifier: 950101002
• Study Type: interventional
• Target: 28
• Locations: 1 country
• Sites: 1

Brief Summary

Question: To investigate how different modes of thigh muscles strengthening exercises emphasizing the knee internal rotators can be as effective as possible in improving the static stability and agility of the knees with anterior drawer laxity. Design: Randomized controlled clinical trial. Participants and Interventions: Young men with anterior drawer laxity of the knee were randomly assigned to three experimental groups in different strengthening modes: plate-loaded squat press (SP), plate-loaded kneeling leg curl with internal rotation (KLCIR), and kneeling leg curl (KLC). The control group with stable knees received no training. Outcome measures: static and dynamic knee stability, isokinetic strength. The purpose of this paper was to find out an optimal solution to the enhancement of the static and dynamic knee stability to a great extent. Key words: anterior cruciate ligament; agility; knee stability; hamstring; knee internal rotator

Conditions

Knee Instability

Keywords

anterior cruciate ligament; agility; knee stability; hamstring; knee internal rotator

Outcome Measures

Primary Outcomes (4)

• Static Knee Stability

  The KT-2000 knee ligament arthrometer (MED Metric Co., San Diego, USA) is designed to assess the anterior drawer laxity of the knee joint. The discrepancy of anterior displacement between the sound side and the lesion side is applied in evaluating the static stability of the knee.

  one year

• Agility

  shuttle run agility test

  one year

• Isokinetic Strength

  Cybex NORM (Cybex International, Inc, Ronkonkoma, New York, U.S.A.) was employed to evaluate isokinetic muscle strength before and after training.

  one year

• Age

  before training

Study Arms (3)

KLCIR

EXPERIMENTAL

plate-loaded kneeling leg curl with internal rotation

Other: plate-loaded kneeling leg curl with internal rotation

SP (Squat Press)

EXPERIMENTAL

plate-loaded squat press

Other: plate-loaded squat press

KLC (Kneeling Leg Curl)

EXPERIMENTAL

plate-loaded kneeling leg curl

Other: plate-loaded kneeling leg curl

Interventions

plate-loaded kneeling leg curl with internal rotation OTHER

The participant was instructed to point toes toward medial side as knee flexing. This is an open-kinetic chain (OKC) exercise and medial hamstring was emphasized.

KLCIR

plate-loaded squat press OTHER

The subject was instructed to position his back properly against the backrest on a machine, with the feet slightly apart. He was instructed to place his feet higher on the foot plate and draw his two knees as close as possible while the knees flexed so that medial hamstring would supposedly bear more tension in the course of knee flexion. This is a closed-kinetic chain (CKC) exercise and was expected to strengthen the quadriceps and hamstring with medial hamstring emphasized.

Also known as: angled leg presses

SP (Squat Press)

plate-loaded kneeling leg curl OTHER

An open-kinetic chain (OKC) exercise was intended to strengthen the hamstring muscle without lateralization emphasized.

KLC (Kneeling Leg Curl)

Eligibility Criteria

• Age: 15 Years - 30 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• The anterior drawer laxity of the knee joint in this study was defined as anterior displacement over 3 mm discrepancy between bilateral knee joints by a KT-2000 test under 20-pound force.

You may not qualify if:

• anterior displacement less than 3 mm discrepancy between bilateral knee joints by a KT-2000 test under 20-pound force.

Sponsors & Collaborators

• Taipei Physical Education College: lead

Study Sites (1)

Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital

Taipei, Taiwan, Taiwan

Location

Limitations and Caveats

small size, participant: not real ACL-injured patient but knee with anterior laxity instead

Results Point of Contact

• Title: Shih-Wei Chou, MD, PhD
• Organization: Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital

h0711@ms13.hinet.net

88633281200

Study Officials

• Shih-Wei Chou

  Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: No
• Restrictive Agreement: No

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER

Study Record Dates

• First Submitted: July 23, 2010
• First Posted: July 27, 2010
• Study Start: January 1, 2006
• Primary Completion: January 1, 2007
• Study Completion: April 1, 2007
• Last Updated: November 23, 2010
• Results First Posted: September 6, 2010

Record last verified: 2010-09

Locations

TW (1)