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Elastic Resistance Effectiveness on Increasing Strength of Shoulders and Hips

Picha, Kelsey J. MS, ATC1; Almaddah, Muataz R. MS, PT2; Barker, Jordan PT, DPT, CSCS, XPS, FMS3; Ciochetty, Tavis PT, DPT4; Black, W. Scott MD5; Uhl, Tim L. PhD, PT, ATC, FNATA6

The Journal of Strength & Conditioning Research: September 12, 2017 - Volume Publish Ahead of Print - Issue - p
doi: 10.1519/JSC.0000000000002216
Original Research: PDF Only

Elastic resistance is a common training method used to gain strength. Currently, progression with elastic resistance is based on the perceived exertion of the exercise or completion of targeted repetitions; exact resistance is typically unknown. This study’s objective is to determine if knowledge of load during elastic resistance exercise will increase strength gains during exercises. Participants were randomized into two strength training groups, elastic resistance only and elastic resistance using a load cell (LC) that displays force during exercise. The LC group used a Smart Handle (Patterson Medical Supply, Chicago, IL) to complete all exercises. Each participant completed the same exercises three times weekly for 8 weeks. The LC group was provided with a set load for exercises whereas the elastic resistance only group was not. Participant’s strength was tested at baseline and program completion, measuring isometric strength for shoulder abduction (SAb), shoulder external rotation (SER), hip abduction (HAb), and hip extension (HEx). Independent t-tests were used to compare the normalized torques between groups. No significant differences were found between groups. Shoulder strength gains did not differ between groups (SAb p>0.05; SER p>0.05). Hip strength gains did not differ between groups (HAb p>0.05; HEx p>0.05). Both groups increased strength due to individual supervision, constantly evaluating degree of difficulty associated with exercise and providing feedback while using elastic resistance. Using a LC is as effective as supervised training and could provide value in a clinic setting when patients are working unsupervised.

1Department of Rehabilitation Sciences College of Health Sciences University of Kentucky

2Department of Rehabilitation Sciences College of Health Sciences University of Kentucky

3Staff Physical Therapist KORT Physical Therapy

4Staff Physical Therapist Bluegrass Orthopaedics

5Associate Professor, Division of Physician Assistant Studies Department of Clinical Sciences College of Health Sciences University of Kentucky

6Professor, Division of Athletic Training Department of Rehabilitation Sciences College of Health Sciences University of Kentucky

Corresponding Author: Kelsey J Picha, MS, ATC University of Kentucky Lexington, Kentucky UNITED STATES

Copyright © 2018 by the National Strength & Conditioning Association.