Abstract
Title: ELECTROMYOGRAPHIC ANALYSIS OF THE REGIONAL PARASPINAL MUSCLE ENDURANCE PERFORMANCE IN YOUNG ADULTS WITH ADOLESCENT IDIOPATHIC SCOLIOSIS
Authors: Tsang SMH1, Chan RYH1, Ma ACF1, Chan JCL1, Cheung TSK1, Wong RWY1, Sun ER1, Fu ACL2
1 Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong.
2 School of Medicine and Health Sciences, The University of Sydney, Australia
Introduction
Histology evidence indicates a greater relative contribution and increase in volume of the slow-twitched and oxidative Type I muscle fibres in the erector spinae of individuals with scoliosis at the convex side of their curve.
Objectives
This cross-sectional study aimed to evaluate and compare the regional paraspinal muscle capacity related to fatigability between the convex and concave sides in individuals with AIS and normal controls with reference to their electromyographic activity during the paraspinal muscles endurance test. We hypothesised that (1) individuals with AIS would exhibit significantly lower degree of endurance and (2) greater fatigability of their paraspinal muscles (expressed in terms of power spectrum analysis) on the concave side of their scoliotic curves compared to their convex side and individuals without the scoliotic curve.
Methods
Surface electromyographic activity of the bilateral erector spinae muscles at the 4th cervical (CES), 4th (TES4) and 9th thoracic (TES9), and 1st lumbar spine levels (LES) were recorded during the prone isometric chest raise test in a cohort of 15 young female adults who were diagnosed with idiopathic scoliosis (AIS, with Cobb angle: 30.1deg (SD: 12.1deg); 13/15 having thoracolumbar curve, one thoracic and one lumbar curve) and 15 age-matched females who did not have spinal deformity (healthy controls) (Table 1). Regional spinal muscle performance and the fatigue-associated features during the endurance test were analysed by the time of exhaustion (in seconds) median frequency (in Hz) and the slope of the electromyographic activity, and compared between both sides for within-group and between-group analyses.
Authors: Tsang SMH1, Chan RYH1, Ma ACF1, Chan JCL1, Cheung TSK1, Wong RWY1, Sun ER1, Fu ACL2
1 Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong.
2 School of Medicine and Health Sciences, The University of Sydney, Australia
Introduction
Histology evidence indicates a greater relative contribution and increase in volume of the slow-twitched and oxidative Type I muscle fibres in the erector spinae of individuals with scoliosis at the convex side of their curve.
Objectives
This cross-sectional study aimed to evaluate and compare the regional paraspinal muscle capacity related to fatigability between the convex and concave sides in individuals with AIS and normal controls with reference to their electromyographic activity during the paraspinal muscles endurance test. We hypothesised that (1) individuals with AIS would exhibit significantly lower degree of endurance and (2) greater fatigability of their paraspinal muscles (expressed in terms of power spectrum analysis) on the concave side of their scoliotic curves compared to their convex side and individuals without the scoliotic curve.
Methods
Surface electromyographic activity of the bilateral erector spinae muscles at the 4th cervical (CES), 4th (TES4) and 9th thoracic (TES9), and 1st lumbar spine levels (LES) were recorded during the prone isometric chest raise test in a cohort of 15 young female adults who were diagnosed with idiopathic scoliosis (AIS, with Cobb angle: 30.1deg (SD: 12.1deg); 13/15 having thoracolumbar curve, one thoracic and one lumbar curve) and 15 age-matched females who did not have spinal deformity (healthy controls) (Table 1). Regional spinal muscle performance and the fatigue-associated features during the endurance test were analysed by the time of exhaustion (in seconds) median frequency (in Hz) and the slope of the electromyographic activity, and compared between both sides for within-group and between-group analyses.
| Original language | English |
|---|---|
| Publication status | Published - 23 Jun 2024 |
| Event | International Research Society of Spinal Deformities (IRSSD) Scientific Meeting 2024 - The Hong Kong Polytechnic University, Hong Kong, China Duration: 21 Jun 2024 → 23 Jun 2024 https://www.polyu.edu.hk/bme/news-and-events/events/2024/6/20240621-23-irssd-2024/ |
Conference
| Conference | International Research Society of Spinal Deformities (IRSSD) Scientific Meeting 2024 |
|---|---|
| Abbreviated title | IRSSD |
| Country/Territory | China |
| City | Hong Kong |
| Period | 21/06/24 → 23/06/24 |
| Internet address |
Keywords
- Adolescents with idiopathic scoliosis
- Electromyography (EMG)
- Endurance