Dynamic Knee Extension Test
Testing and measurement are the means of collecting information upon which subsequent performance evaluations and decisions are made. In the analysis, we need to consider the factors influencing the results.
Objective
This test assesses the strength of the athlete's knee extensor muscles.
Required Resources
To conduct this test, you will require:
- Universal knee flexor/extensor bench
- Assistant
How to conduct the test
- The athlete warms up for 10 minutes
- The assistant sets the resistance close to the athlete's one repetition maximum load
- The athlete sits on the end of the bench with the padded edge of the bench against the posterior surface of the knee joint, the feet hooked behind the padded rollers and the hands grasping the bench just behind their buttocks
- The athlete conducts knee extensions until they are unable to continue
- The assistant counts the number of successful knee extensions
- If the number of knee extensions exceeds 12, then the athlete rests for 10 minutes, the assistant increases the resistance and the athlete repeats the test
- The assistant records the final resistance and 1RM using the Brzycki [1] (1993) equation
- 1RM = Weight ÷ (1.0278 - (0.0278 × Number of repetitions))
Analysis
Analysis of the result is by comparing it with previous tests' results. It is expected that the study would indicate an improvement with appropriate training between each test.
Target Group
This test is suitable for active athletes but not for individuals where the test would be contraindicated.
Reliability
Test reliability refers to how a test is consistent and stable in measuring its intended measure. Reliability will depend upon how strict the test is conducted and the individual's level of motivation to perform the test. The following link provides various factors influencing the results and test reliability.
Validity
Test validity refers to the degree to which the test measures what it claims to measure and the extent to which inferences, conclusions, and decisions based on test scores are appropriate and meaningful. This test provides a means to monitor training on the athlete's physical development.
Advantages
- Minimal equipment required
- Simple to set up and conduct
- The athlete can administer the test
Disadvantages
- Specialist equipment required
- Assistant required to administer the test
References
- BRZYCKI, M. (1993) Strength testing-Predicting a one-rep max from reps-to-fatigue. JOPERD, 68, p. 88-90.
Page Reference
If you quote information from this page in your work, then the reference for this page is:
- MACKENZIE, B. (2005) Dynamic Knee Extension Test [WWW] Available from: https://www.brianmac.co.uk/kneetest.htm [Accessed