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Full-Body Harness versus Waist Belt: An Examination of Force Production and Pain during an Isoinertial Device Maximal Voluntary Isometric Contraction. | LitMetric

Full-Body Harness versus Waist Belt: An Examination of Force Production and Pain during an Isoinertial Device Maximal Voluntary Isometric Contraction.

J Funct Morphol Kinesiol

Exercise Physiology Intervention and Collaboration Lab, School of Kinesiology and Rehabilitation Sciences, University of Central Florida, Orlando, FL 32816, USA.

Published: September 2024

AI Article Synopsis

  • This study compared force production and pain levels between two squat methods: using a waist belt (WB) and a full-body harness (FBH) on an isoinertial device, alongside traditional force plate measurements.
  • Twenty adults participated in the assessments, and various statistical methods were utilized to determine reliability, force outputs, and pain comparisons.
  • Results showed that while both FBH and WB methods had high reliability and strong correlation to traditional methods, FBH did not agree well with traditional measurements, and FBH produced significantly higher max isometric force compared to WB.

Article Abstract

Background/objectives: This study examined the differences in participant force production and pain between a squat maximal voluntary isometric contraction (IMVIC) performed with either a waist belt (WB) or full-body harness (FBH) on the Desmotec D.EVO isoinertial device (D.EVO). Agreement between FBH IMVIC and a traditional force plate squat MVIC (TMVIC) was also assessed.

Methods: Twenty adults completed FBH, WB, and TMVIC assessments on two separate occasions. Two-way treatment x time ANOVAs were conducted to compare force outputs and pain between treatments (FBH vs. WB) across time. Test-retest reliability was assessed using intraclass correlation coefficients. Associations between outcomes were determined using Pearson's r. Standard error of estimate, constant error, total error, and Bland-Altman plots were used to assess agreement between IMVIC and TMVIC.

Results: FBH and WB IMVIC exhibited good to excellent reliability (ICC = 0.889-0.994) and strong associations (r = 0.813 and 0.821, respectively) when compared to TMVIC. However, agreement between FBH and TMVIC was poor. No significant interaction or main effects were observed for pain. FBH maximum isometric force (MIF) was significantly higher than WB MIF. WB IMVIC was the only significant predictor of TMVIC (R = 0.674).

Conclusions: Our findings indicate that the D.EVO should not be utilized as a replacement for a traditional MVIC setup.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11417928PMC
http://dx.doi.org/10.3390/jfmk9030165DOI Listing

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