Back to Search
Start Over
Bilateral impairments of quadriceps neuromuscular function occur early after anterior cruciate ligament injury.
- Source :
- Research in Sports Medicine; Jan/Feb2024, Vol. 32 Issue 1, p72-85, 14p
- Publication Year :
- 2024
-
Abstract
- The study aimed to investigate the impairments in quadriceps neuromuscular function, including strength, rate of torque development (RTD) and activation failure (QAF) early after an ACL injury. A cross-sectional study was conducted. Thirty physically active patients with a primary ACL injury within three months, aged 18 to 40 years old, and who were scheduled for ACL reconstruction were included. Thirty matched healthy controls were also recruited. All the outcomes were measured on an isokinetic dynamometer with knee flexion at 45°. Quadriceps strength was measured by maximal voluntary isometric contractions (MVIC). Early (RTD<subscript>0-50</subscript>) and late (RTD<subscript>100-200</subscript>) phases of RTD were retrieved from the MVIC test from 0 to 50 ms and 100–200 ms, respectively. QAF was quantified by the central activation ratio (CAR) measured by superimposed burst technique. The results of Mann–Whitney U test showed that compared with the healthy limbs, the injured limbs of the ACL group showed lower quadriceps strength (P < 0.001), RTD<subscript>0-50</subscript> (P < 0.001) and RTD<subscript>100-200</subscript> (P < 0.001); the uninjured limbs showed lower quadriceps strength (P = 0.009), RTD<subscript>0-50</subscript> (P = 0.006) as well as greater QAF (P = 0.010). To conclude, bilateral quadriceps suffered from neuromuscular impairments early after an ACL injury. [ABSTRACT FROM AUTHOR]
- Subjects :
- NEUROMUSCULAR system physiology
TORQUE
STATISTICS
NEUROPHYSIOLOGY
MUSCLE contraction
CONFIDENCE intervals
CROSS-sectional method
MANN Whitney U Test
RISK assessment
T-test (Statistics)
ANTERIOR cruciate ligament injuries
QUADRICEPS muscle
MUSCLE strength
DESCRIPTIVE statistics
DATA analysis software
DATA analysis
DISEASE complications
Subjects
Details
- Language :
- English
- ISSN :
- 15438627
- Volume :
- 32
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Research in Sports Medicine
- Publication Type :
- Academic Journal
- Accession number :
- 174420939
- Full Text :
- https://doi.org/10.1080/15438627.2022.2079986