Leg Extension Strength Test

The Leg Extension test is an isometric strength test as a measure of lower body strength. In this test, the participant sits on a table an attempts to extend the leg. This test is part of the protocol for the Groningen Fitness Test for the Elderly.

purpose: to measure lower body strength.

equipment required: a table and a specially constructed box with two arm supports, connected to a screen.

pre-test: Explain the test procedures to the subject. Perform screening of health risks and obtain informed consent. Prepare forms and record basic information such as age, height, body weight, gender and test conditions. Perform a standard warm-up. See more details of pre-test procedures.

procedure: The participant sits on the table between the arm supports with their lower legs hanging down (knee angle 90°). A shin guard attached to a resistance is fastened around the right lower leg of the participant, who must try to extend the right leg by raising the lower leg with maximum strength and hold that position for 3 seconds. During the test, the participant may lean on the arm supports. Explosive movements should be avoided. The score is given in kilograms of force. After one practice trial, the best score of three trials is recorded. The resting period between trials is approximately 30 s.

scoring: The measurement is in Kg force. The higher score indicates a better performance.

disadvantages: the blocks specifically for this test needs to be obtained

target population: this test was designed specifically for the elderly population.

comments: The subjects should be strongly encouraged to give a maximum effort to maximize their scores.

reference: Koen A.P.Lemmink, Han Kemper, Mathieu H.G. de Greef, and Piet Rispens P, Stevens M, Reliability of the Groningen Fitness Test for the Elderly, Journal of Aging and Physical Activity, 2001, 9, 194-212

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