A comparative study of ground reaction forces, loading rate and impulse during single leg drop landing in Recurrent Low back Pain Population

Jalalvand, Ali; Hosseini, Yasin; Amini, Ashraf; hamedani, behzad

Volume 8, Issue 4 (3-2018) JAP 2018, 8(4): 46-60 | Back to browse issues page

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Jalalvand A, Hosseini Y, Amini A, hamedani B. A comparative study of ground reaction forces, loading rate and impulse during single leg drop landing in Recurrent Low back Pain Population . JAP 2018; 8 (4) :46-60
URL: http://jap.iums.ac.ir/article-1-5354-en.html

A comparative study of ground reaction forces, loading rate and impulse during single leg drop landing in Recurrent Low back Pain Population

Ali Jalalvand

¹, Yasin Hosseini²

, Ashraf Amini³

, Behzad Hamedani⁴

1- Islamic Azad University, Hamedan , jalalvand_ali@yahoo.com
2- University of Malayer
3- Amirkabir University of Technology
4- Isfahan University of Medical Sc

Abstract: (20094 Views)

Aims and background: The purpose of this study was to compare the parameters of ground reaction force during landing in patients with chronic low back pain. Material and Methods: 21 healthy men and 21 men with chronic low back pain participated in this study. Using a Kistler force plate )1000Hz) GRF during landing was measured. Then, maximum GRF and their related time-to-peak, impulse and loading rate were obtained. Independent t student was used to analyze the data (α=0.05). Findings: People with chronic low back pain have lower internal-external GRF and have a lower vertical GRF to touching the ground )FZ2) when landing compared to healthy people. Patients with chronic low back pain have a lower loading rate(Y)(P=.049). conclusion: People with low back pain have a higher vertical ground reaction force than healthy people, and these factors are considered as a risk factor for increasing compressive forces to the spine.

Keywords: Crossover landing, ground reaction force, impulse, loading rate

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Type of Study: Original | Subject: General
Received: 2017.11.9 | Accepted: 2017.11.25 | Published: 2018.02.21