Reliability of 1-Repetition Maximum Estimation for Upper and Lower Body Muscular Strength Measurement in Untrained Middle Aged Type 2 Diabetic Patients

How to Cite:Unaise Abdul-HameedPrateek RangraMohd. Yakub ShareefMohd. Ejaz HussainReliability of 1-Repetition Maximum Estimation for Upper and Lower Body Muscular Strength Measurement in Untrained Middle Aged Type 2 Diabetic Patients.Asian J Sports Med.3(4):34549.https://doi.org/10.5812/asjsm.34549.

Abstract

Purpose:

The 1-repetition maximum (1-RM) test is the gold standard test for evaluating maximal dynamic strength of groups of muscles. However, safety of actual 1-RM testing is questionable in clinical situations such as type 2 diabetes (T2D), where an estimated 1-RM test is preferred. It is unclear if acceptable test retest reliability exists for the estimated 1-RM test in middle aged T2D patients. This study examined the reliability of the estimated 1-RM strength test in untrained middle aged T2D subjects.

Methods:

Twenty five untrained diabetic males (n=19) and females (n=6) aged 40.7+0.4 years participated in the study. Participants undertook the first estimated 1-RM test for five exercises namely supine bench press, leg press, lateral pull, leg extension and seated biceps curls. A familiarisation session was provided three to five days before the first test. 1-RM was estimated for all participants by Brzycki 1-RM prediction equation. Another identical 1-RM estimation procedure occurred one week after first test. Intraclass correlation coefficients (ICC), paired t-test, standard error of measurement (SEM), Bland-Altman plots, and estimation of 95% CI were used to assess reliability.

Results:

Test-retest reliability was excellent (ICC_2,1=0.98-0.99) for all measurements with the highest for leg extension (ICC_2,1=0.99). The SEM was lowest for lateral pull and leg extension exercises. Paired t-tests showed non-significant differences between the means of 2 sessions across three of five exercises.

Conclusions:

The study findings suggest that estimation of 1-RM is reliable for upper and lower body muscular strength measurement in untrained middle aged T2D patients.

Keywords

Full Text

Full text is available in PDF

comments

Crossmark

Checking

Share on

Comments

Number of Comments:0

Cited by

Metrics

Get Permission (article level)

Purchasing Reprints

Copyright Clearance Center (CCC) handles bulk orders for article reprints for Brieflands. To place an order for reprints, please click here ( https://www.copyright.com/landing/reprintsinquiryform/ ). Clicking this link will bring you to a CCC request form where you can provide the details of your order. Once complete, please click the ‘Submit Request’ button and CCC’s Reprints Services team will generate a quote for your review.

Search Relations

Author(s):

Unaise Abdul-Hameed:[PubMed][Scholar]
Prateek Rangra:[PubMed][Scholar]
Mohd. Yakub Shareef:[PubMed][Scholar]
Mohd. Ejaz Hussain:[PubMed][Scholar]