Related Experiment Video
Updated: Feb 15, 2026

Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making
Published on: March 2, 2011
Decision-Making Data: Expectations for Reproducibility of Lifting on Separate Days
Marcie C Swift1, Robert Townsend, Douglas W Edwards
1Marcie C. Swift, PhD, PT, FAAOMPT, is an associate professor at Rockhurst University. Dr. Swift received her PhD in Rehabilitation Sciences in 1997 from the University of Kansas. She is a graduate of the Kaiser-Hayward Advanced Orthopedic Manual Therapy Fellowship Program in Oakland, CA, and is a fellow in the American Academy of Orthopedic Manual Physical Therapists. Robert Townsend, MS, CSCS, CEAS, is a clinical consultant with Bardavon Health Innovations. Previously, Mr. Townsend was an instructor in the School of Health Studies at the University of Memphis as well as Director of Research and Education with WCS Occupational Rehabilitation. Mr. Townsend has been performing functional capacity evaluations since 1997. Douglas W. Edwards, ATC/L, is the VP-Product Research & Clinical Testing for Bardavon Health Innovations. He has degrees from the University of Missouri-Columbia in Business Administration and Exercise Science. He is an NATABOC certified athletic trainer and is certified in multiple FCE Products. He has been treating workers' compensation patients since 1998. Janice K. Loudon, PhD, PT, ATC, SCS, is an associate professor at Rockhurst University in Kansas City, MO. She received her PhD in 1993 in Movement Science from Washington University in St. Louis, MO. Her research is focused on lower extremity pathomechanics and their relationship to athletic injury.
Maximal lifting capability differs between crate and XRTS Lever Arm devices, with a 10.5% difference observed. Both lifting modes meet criteria for functional capacity evaluations, ensuring reliable effort assessment in workers' compensation cases.
Area of Science:
- Occupational Health
- Biomechanics
- Rehabilitation Science
Background:
- Functional Capacity Evaluations (FCEs) assess patient readiness for work post-rehabilitation.
- FCEs involve effort assessment alongside functional lifting capabilities.
- Variations in equipment between treatment and FCE facilities can impact lifting assessments.
Purpose of the Study:
- To compare maximal lifting capability between traditional crate and XRTS Lever Arm lifting modes.
- To evaluate if these lifting modes meet established criteria for sincere effort during FCEs.
- To analyze the rate of perceived exertion (RPE) for both lifting modes.
Main Methods:
- Forty-four subjects (20-44 years) participated.
- One-repetition maximum (1RM) was established for crate lifts.
- Subjects performed lifts at 10-100% of 1RM using both crate and XRTS modes on separate days, rating perceived exertion.
- Paired t tests and Spearman's correlation analyzed data.
Main Results:
- A statistically significant difference (p < .04) was found between maximal lift values for the two modes.
- The mean percent difference in maximal lift was 10.5% ± 6.4%.
- A positive correlation (p = .87) was observed between RPE for both lifting modes.
Conclusions:
- The study indicates that the two lifting modes meet established criteria for lift comparison testing during FCEs.
- Findings support the use of different lifting modes on separate days for reliable effort assessment in FCEs.
- This research aids case managers and physicians in comparing functional lifting abilities across different settings.
More Related Videos
07:09Integrating Visual Psychophysical Assays within a Y-Maze to Isolate the Role that Visual Features Play in Navigational Decisions
Published on: May 2, 2019
09:15Enhanced Reproducibility and Precision of High-Throughput Quantification of Bacterial Growth Data Using a Microplate Reader
Published on: July 27, 2022
Related Concept Videos
Lift
Expected Value
Determination of Expected Frequency
Decision Making
Automatic decision-making is fast, intuitive, and relies on gut feelings...
Decision Making: P-value Method
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim is also stated. These statements can act as null and alternative hypotheses: a null hypothesis would be a neutral statement while the alternative hypothesis can...
Expected Frequencies in Goodness-of-Fit Tests