Measurement and Evaluation
Handgrip Strength and Validation Lab
Overview (course objective):
This semester project aims to cover both measurement of strength and utilization of statistical analysis from a range of statistical tests and creation of variable some additional variables using formulas.
Overview (lab objective):
We have several devices that each measure handgrip strength in kilograms. We do not know the state of the two older devices, but the Jamar Plus+ was recently purchased and came calibrated from the manufacturer. It will serve as our gold standard. We will test all three devices concurrently in a group of undergraduate students and determine the level of both reliability and validity of the older devices.
Protocol for conducting tests of handgrip strength
1.Adjust the dynamometer handgrip position before each attempt on the three different handgrip dynamometers
2.Position your arm in a 90 degree angle (with your upper arm down at your side and your forearm parallel to the ground)
3.Reset or prep the device for recording
4.Squeeze and hold with a quick, maximum effort for 2 seconds using your dominant hand.
5.Allow a short rest between trials
Recording Data:
Patterson
- Trial 1: ____42_____kg
- Trial 2: ____33_____kg
- Trial 3: _____40____kg
TEC
- Trial 1: ____44_____kg
- Trial 2: ____35_____kg
- Trial 3: _____40____kg
Plus+
- Trial 1: ___27.4______kg
- Trial 2: ____25.3_____kg
- Trial 3: ____25.2_____kg
Upload best trial to spreadsheet under variable GripStr_Plus, GripStr_TEK, and GripStr_Pat.
Upload InBody body composition variables (when available):
Skeletal Muscle Mass, Dominant arm weight (Under segmental lean analysis)
Preparing the lab report:
Outline of Results
Include a description and interpretation of each statistic conducted (what is the statistic that was calculated and what does it mean in relation to our research question).
Write a lab report: Include a cover page, the below headings, and references section:
Write research paper manuscript: including the above data using the following headings:
Background/Objectives
Introduction – Describe in your own words the purpose of the lab and the research question.
Methods – Provide sufficient detail such that someone could replicate the lab and confirm the
results. Include the protocols for handgrip strength and any participant characteristics.
Results – Include the tables and figures described above as well as interpretations.
Discussion – What is the main finding? How does it address the research question?
LAB FORMAT
Cover Page will include
Class Title
Title of Lab
(Lab write-up must have a descriptive title)
Name
Start New page
Introduction
Why was the lab done? What is the concept or theory being tested?
You should review relevant literature regarding the concept or theory being tested.
Need to utilize information from the textbook, readings, lecture, and outside sources as relevant. This is important, and it must be done
Purpose
What is the purpose of the lab test or experience?
How does the test or experience relate back to the theory or concept being explored?
Hypothesis
What do you expect to happen based on theory and previous research?
Need to utilize information from the textbook, readings, lecture, and outside sources as relevant.
Null Hypothesis and Alternate Hypotheses should be stated
Procedure
These are step by step instructions on how to do, what is needed to do the experiment.
This section describes in logical order how the lab was done.
This is written in clear and concise language.
If done well, the reader will be able to replicate the lab or experiment based on the description provide.
Results
This section will usually include data Tables and perhaps Graphs.
This section will present the raw data and any statistical calculations that are done.
Discussion
An analysis of the results from the lab is in this section.
Relate the results to back to previous literature and theory from textbook or other sources.
How do the data and results presented reflect or replicate what has previously been reported?
Was the purpose of the lab met and was the hypothesis proven or disproven?
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