1. Reliability of a Shoulder Internal and External Rotation
Passive Flexibility Analysis for Overhead Athletics
Matthew Husted and James Camp
Faculty Sponsor: Jeff T. Wight, Kinesiology
Kinesiology 430: Measurement and Evaluation of Human Movement, Jacksonville University
MethodsBackground
•Shoulder ROM is traditionally measured
using a goniometer. Unfortunaly, poor
reliability scores are common. Recently, a
Smart phone app has been developed that
may eliminate poor scores. The purpose of
this study was to test the reliability of the
smartphone app for shoulder IR and ER
active ROM.l
Three groups of unskilled clinicians
analyzed 12 college students. A t-test was
used to compare IR and ER reliability. Both
ER (0.79) and IR (0.89) had good overall
reliability scores with no poor scores (<0.6).
IR reliability was significantly greater (p<
0.001) than ER reliability; ER was fair/good
and IR was good/excellent.
Measured using Smart App
Measured with clinical goniometer
The goal was to find out what could be the most
accurate out of the traditional goniometer or
smart phone app. There are countless studies
aimed at which provides clinicians the most
accurate measures.
).
Purpose of this Study
Approach used in this Study
Acquire test subjects to calculate the ROM of IR
and ER. Measure the patients on one day then
measure again the day after. Use the two devices
to acquire the most accurate measurement.
Torque at end ROM
Slope =
stiffness
ROA = angle at 1N•m
End
ROM
Important Findings/Conclusions
• Correlation scores proved Smart Phone App was superior
• P values (<.05) for margin of Smart Phone App reliability
• Standard goniometer had a fail rate at r=.60
• Smart phone App is free and can be used for all ROM
Future Questions
Will this be used in clinics?
What other finding can be used from the smart phone?
Will the classic goniometer become extinct?