Isoinertial Lift
Wed, 05/10/2006 - 5:15pm
I am currently in the process of attempting to have my facility purchase the PILE box in order to perform at least the Occasional lift. Just a few questions.
1. Is there any research on the protocol provided in the Matheson manual on just the Isoinertial lifting evaluation? Maybe I have overlooked it in the Bookshelf, but everything that I see refers to the PILE (frequent lift evaluation) or the EPIC.
2. With the clients having to perform 4 lifts with the Isoinertial Lift protocol, does anyone find that their clients become fatigued prior to finishing all lifts? And would fatigue skew the results if this does occur? Obvious, safety is key, but for those clients that are giving full effort on the first couple of lifts, wouldn't fatigue set in?
Thanks,
Kevin
Hello Kevin!
In answer to your first question: please read article #77 in the research article section. It is the foundation of the occasional lift protocol.
The response to your second question it more complicated:
First, each of the protocols we use is a sub-maximal protocol. None of our tests push the individual to their true maximum physical ability.
Second, the end-activity domain we use is the psychophysical domain. Therefore, one would expect an individual giving full-effort throughout the test to be limited by eventual fatigue, muscle weakness, or symptomatic response to the activity. This is consistent with Snook?s methodology upon with the test norms are based.
Third, the test procedures upon which our protocol is based did not allow for a rest and recovery period between two exercise segments. The individuals tested were told to work as hard as they could without straining themselves or becoming unusually tired, weakened, etc. This may be taken as a indication that they were allowed to work to sub-maximal fatigue but not injury. Again, the norms used in our protocol reflect this testing methodology if the person works to fatigue and not to test cessation based on a symptomatic response to activity.
Fourth, if the reason for test termination is reported or observed fatigue, the thinking evaluator will write a narrative description of that fatigue. Is it reported fatigue as evidenced by the client?s verbal reports? Is it observed fatigue as evidenced by increased heart rate? Is it observed fatigue as evidenced by box handling (scraping the box over the edge of the shelf or nudging the box with the chest to complete the lift)? Is it observed fatigue as evidenced by shorter end-range of activity or power?
If the reason for test cessation is ?fatigue? rather than symptomatic response to the activity or muscle weakness, the evaluator should look further into the issue. If cardio-respiratory fatigue is suspected, a metabolic endurance test may be indicated.