Visual Memory Influences the Effect of Soccer Ball Handling on Knee Valgus Angle while Cutting

2017 ◽  
Vol 49 (5S) ◽  
pp. 381
Author(s):  
Scott M. Monfort ◽  
Jared J. Pradarelli ◽  
Dustin R. Grooms ◽  
James A. Oñate ◽  
Ajit M.W. Chaudhari
Keyword(s):  
Visual Memory ◽  
Knee Valgus ◽  
Soccer Ball ◽  
Valgus Angle

Visual-Spatial Memory Deficits Are Related to Increased Knee Valgus Angle During a Sport-Specific Sidestep Cut

2019 ◽  
Vol 47 (6) ◽  
pp. 1488-1495 ◽  
Author(s):  
Scott M. Monfort ◽  
Jared J. Pradarelli ◽  
Dustin R. Grooms ◽  
Keith A. Hutchison ◽  
James A. Onate ◽  
...  
Keyword(s):  
Spatial Memory ◽  
Visual Memory ◽  
Neuromuscular Control ◽  
Knee Valgus ◽  
Soccer Ball ◽  
Visual Spatial ◽  
Valgus Angle ◽  
Peak Knee ◽  
Biomechanical Parameters ◽  
Visual Spatial Memory

Background: Identifying athletes at an increased risk of injury is a promising approach to improve the effect of injury prevention interventions; however, it requires first identifying the potential athlete-specific risk factors. Cognitive ability was recently shown to correlate with noncontact anterior cruciate ligament injury rates and lower extremity mechanics, marking an underexplored area. A better understanding of how individuals’ cognitive ability is associated with neuromuscular control during sport-specific tasks may improve injury prevention. Hypothesis: Athletes with lower cognitive performance on a standardized cognitive assessment would demonstrate greater increases in knee valgus angle and moment when performing a sidestep cut with soccer ball dribbling versus without. Visual-spatial memory was expected to demonstrate stronger relationships than reaction time or processing speed. Study Design: Descriptive laboratory study. Methods: Fifteen male collegiate club soccer players participated (mean ± SD: 20.7 ± 2.0 years, 1.78 ± 0.07 m, 76.5 ± 8.9 kg). Participants performed anticipated 45° run-to-cut trials with and without a dual task of dribbling a soccer ball. Peak early-stance knee valgus angle and moment for the plant limb were calculated. Participants also completed a cognitive assessment to evaluate visual memory, verbal memory, reaction time, and processing speed. These composite scores were entered as candidate predictors for a stepwise regression analysis on the dual-task change scores in lower extremity biomechanical parameters (ie, ball handling – non–ball handling). Results: Visual memory composite score (a measure of visual-spatial memory) was the only cognitive outcome significantly associated with the change in biomechanical parameters. Each unit decrease in the visual memory composite score was associated with an increase of 0.21°± 0.05° in peak knee valgus angle during the ball-handling task as compared with the non–ball handling task ( R2 = 52%, P = .003). Conclusion: Visual-spatial memory was associated with neuromuscular control during a sidestep cutting task during soccer ball dribbling, with deficits in this cognitive domain being associated with increased peak knee valgus angle. Clinical Relevance: Assessing visual-spatial memory ability may provide useful information to better understand conditions associated with impaired neuromuscular control and to potentially identify athletes at an elevated risk for musculoskeletal injury.

What is the relationship between the “Fujisawa point” and postoperative knee valgus angle? A theoretical, computer-based study

The Knee ◽  
2020 ◽  
Vol 27 (1) ◽  
pp. 183-191 ◽  
Author(s):  
Yingchao Yin ◽  
Shilun Li ◽  
Ruipeng Zhang ◽  
Jialiang Guo ◽  
Zhiyong Hou ◽  
...  
Keyword(s):  
Knee Valgus ◽  
Theoretical Computer ◽  
Valgus Angle ◽  
Computer Based ◽  
The Relationship ◽  
Postoperative Knee

scholarly journals Effect of Six Weeks of Progressive Jump-Landing Training on Jump Shooting Accuracy and Knee Valgus Angle in Male Basketball Players with Dynamic Knee Valgus

2021 ◽  
Vol 7 (2) ◽  
pp. 148-163
Author(s):  
Saeed Ghobadi Nezha ◽  
◽  
Seyyed Hosein Hoseini ◽  
Ali Asghar Norasteh ◽  
◽  
...  
Keyword(s):  
Evaluation Method ◽  
Knee Injuries ◽  
Training Group ◽  
Study Groups ◽  
Control Group ◽  
Knee Valgus ◽  
Basketball Players ◽  
Jump Landing ◽  
Valgus Angle ◽  
Quasi Experimental

Objective: Dynamic Knee Valgus (DKV) causes many acute and chronic knee injuries during deceleration and landing in sports activities and can affect the athletes’ specific skills. This study aims to investigate the effect of 6 weeks of progressive jump-landing training on jump shooting accuracy and knee valgus angle in male basketball players with DKV. Methods: This is a quasi-experimental study conducted on 24 male basketball players with DKV in Mazandaran, who were selected purposefully. They were randomly divided into training and control groups. Their jump shooting accuracy was assessed by Boddington’s Basketball Jump Shooting Accuracy Test, and their DKV angle was measured by a two-dimensional evaluation method in Quinoa software. In addition to their routine exercises, the training group performed the jump-landing training for 6 weeks at 3 sessions per week, while the control group performed their usual exercises only. In order to compare the two study groups, ANCOVA was used. Results: The progressive jump-landing program had a significant effect on jump shooting accuracy (P=0.001) and DKV angle (P=0.001). Conclusion: Six weeks of progressive jump-landing training can improve the jump shooting accuracy and knee valgus angle in basketball players with DKV. Therefore, jump landing exercises are recommended for improving the jump shooting skill and knee alignment in these athletes.

Predictors Of Knee Valgus Angle During A Jump-landing Task

2005 ◽  
Vol 37 (Supplement) ◽  
pp. S398 ◽  
Author(s):  
Darin A. Padua ◽  
Stephen W. Marshall ◽  
Anthony I. Beutler ◽  
Marlene DeMaio ◽  
Barry P. Boden ◽  
...  
Keyword(s):  
Knee Valgus ◽  
Jump Landing ◽  
Valgus Angle

scholarly journals The Effect of Valgus Control Instruction Exercises on Pain, Strength, and Functionality in Active Females With Patellofemoral Pain Syndrome

2019 ◽  
Vol 11 (3) ◽  
pp. 223-237 ◽  
Author(s):  
Mahsa Emamvirdi ◽  
Amir Letafatkar ◽  
Mehdi Khaleghi Tazji
Keyword(s):  
Injury Prevention ◽  
Pain Syndrome ◽  
Patellofemoral Pain Syndrome ◽  
Patellofemoral Pain ◽  
Knee Valgus ◽  
Valgus Angle ◽  
Significant Difference ◽  
Hop Test ◽  
Control Instruction ◽  
Dynamic Valgus

Background: Patellofemoral pain syndrome (PFPS) is sometimes related to excessive hip adduction and internal rotation, as well as knee valgus during weightbearing activities in females. Research on injury prevention and rehabilitation strategies has shown the positive effects of valgus control instruction (VCI) exercise programs in training. Hypothesis: A VCI program would result in a positive change in pain, eccentric hip muscle torque, and performance in females with PFPS. Study Design: Controlled laboratory study. Level of Evidence: Level 1. Methods: Sixty-four amateur female volleyball players from our university (age, 18-25 years) with PFPS and equal years of exercise experience were randomly divided into VCI (n = 32; age, 22.1 ± 5.88 years) and control (n = 32; age, 23.1 ± 6.49 years) groups. Function (single, triple, and crossover hops), strength (hip abductor and external rotators), pain (visual analog scale), and knee valgus angle (single-leg squat) were assessed at baseline and after intervention. Results: There was a significant difference before and after implementation of the VCI program with regard to pain (49.18% ↓, P = 0.000), single-leg hop test (24.62% ↑, P = 0.000), triple-hop test (23.75% ↑, P = 0.000), crossover hop test (12.88% ↑, P = 0.000), single-leg 6-m timed hop test (7.43% ↓, P = 0.000), knee dynamic valgus angle (59.48% ↓, P = 0.000), peak abductor to adductor eccentric torque ratio (14.60% ↑, P = 0.000), peak external (59.73% ↑, P = 0.023) and internal rotator (15.45% ↑, P = 0.028) eccentric torques, and the ratio of peak external to internal rotator eccentric torque (40.90% ↑, P = 0.000) ( P < 0.05). Conclusion: PFPS rehabilitation and prevention programs should consider VCI exercises to decrease pain, improve strength, and increase athletes’ functional performance. Clinical Relevance: This study investigated the effect of VCI exercises on knee valgus angle, pain, and functionality of individuals with PFPS. The VCI program improves performance, knee dynamic valgus angle, and strength in participants with PFPS. A controlled and optimal knee valgus angle during a functional task is the most important factor for injury prevention specialists. VCI training can be used as a supplemental method to prevent and treat lower extremity injury in patients with PFPS.

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