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Investigation of the Effects of High-Intensity, Intermittent Exercise and Unanticipation on Trunk and Lower Limb Biomechanics During a Side-Cutting Maneuver Using Statistical Parametric Mapping
- Source :
- Journal of Strength and Conditioning Research. 32:1583-1593
- Publication Year :
- 2018
- Publisher :
- Ovid Technologies (Wolters Kluwer Health), 2018.
-
Abstract
- Whyte, EF, Richter, C, O'Connor, S, and Moran, KA. Investigation of the effects of high-intensity, intermittent exercise and unanticipation on trunk and lower limb biomechanics during a side-cutting maneuver using statistical parametric mapping. J Strength Cond Res 32(6): 1583-1593, 2018-Anterior cruciate ligament (ACL) injuries frequently occur during side-cutting maneuvers when fatigued or reacting to the sporting environment. Trunk and hip biomechanics are proposed to influence ACL loading during these activities. However, the effects of fatigue and unanticipation on the biomechanics of the kinetic chain may be limited by traditional discrete point analysis. We recruited 28 male, varsity, Gaelic footballers (21.7 ± 2.2 years; 178.7 ± 14.6 m; 81.8 ± 11.4 kg) to perform anticipated and unanticipated side-cutting maneuvers before and after a high-intensity, intermittent exercise protocol (HIIP). Statistical parametric mapping (repeated-measures analysis of varience) identified differences in phases of trunk and stance leg biomechanics during weight acceptance. Unanticipation resulted in less trunk flexion (p < 0.001) and greater side flexion away from the direction of cut (p < 0.001). This led to smaller (internal) knee flexor and greater (internal) knee extensor (p = 0.002-0.007), hip adductor (p = 0.005), and hip external rotator (p = 0.007) moments. The HIIP resulted in increased trunk flexion (p < 0.001) and side flexion away from the direction of cut (p = 0.038), resulting in smaller (internal) knee extensor moments (p = 0.006). One interaction effect was noted demonstrating greater hip extensor moments in the unanticipated condition post-HIIP (p = 0.025). Results demonstrate that unanticipation resulted in trunk kinematics considered an ACL injury risk factor. A subsequent increase in frontal and transverse plane hip loading and sagittal plane knee loading was observed, which may increase ACL strain. Conversely, HIIP-induced trunk kinematic alterations resulted in reduced sagittal plane knee and subsequent ACL loading. Therefore, adequate hip and knee control is important during unanticipated side-cutting maneuvers.
- Subjects :
- Adult
Male
Knee Joint
Rotation
Movement
Physical Exertion
Football
Physical Therapy, Sports Therapy and Rehabilitation
medicine.disease_cause
Weight-bearing
Weight-Bearing
Cruciate ligament
Young Adult
03 medical and health sciences
0302 clinical medicine
medicine
Humans
Orthopedics and Sports Medicine
Muscle, Skeletal
Exercise
Orthodontics
business.industry
Anterior Cruciate Ligament Injuries
Biomechanics
Torso
030229 sport sciences
General Medicine
musculoskeletal system
medicine.disease
ACL injury
Trunk
Sagittal plane
Biomechanical Phenomena
Kinetics
medicine.anatomical_structure
Lower Extremity
Exercise Test
Hip Joint
business
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 10648011
- Volume :
- 32
- Database :
- OpenAIRE
- Journal :
- Journal of Strength and Conditioning Research
- Accession number :
- edsair.doi.dedup.....eb13df2a9e14e42f3108dc7917ed1c8f