EBookClubs

Read Books & Download eBooks Full Online

EBookClubs

Read Books & Download eBooks Full Online

Book The Effects of Prophylactic Ankle Bracing on Knee and Hip Mechanics in Basketball Players During Jump Landing

Download or read book The Effects of Prophylactic Ankle Bracing on Knee and Hip Mechanics in Basketball Players During Jump Landing written by Riann K. Thayer and published by . This book was released on 2018 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Background: Many athletes of various sports have been required to wear ankle braces for prophylactic uses. Ankle braces have been shown to decrease range of motion in all directions, which means the main force absorption mechanism of the ankle may be inhibited. This decrease in force absorption at the ankle may increase the mechanical demands at the more proximal knee and hip joints. In this study, the change in knee, hip and lower back mechanics will be investigated to gain understanding as to whether bracing the ankle could create a higher injury potential. Methods: In this study, 12 intercollegiate basketball players (6 female, 6 male) participated during one session, in which each subject tested for each taping condition (self-adherent, adhesive cloth, and no tape). For each trial, the participants performed three maximum vertical jump trials and three depth drop trials, a 15-minute bout of exercise, and subsequently three more maximum vertical jumps and three more depth drops. The participants' lower body kinematics and kinetics were measured using 3D motion capture and force plates. Results: Analysis of ankle bracing pre- and post-exercise on lower extremity kinematics and kinetics through a two-way MANOVA yielded results that were not significant for any of the variables, including their interaction effect. There was no effect of the three different types of ankle bracing (control, adhesive, and self-adhesive), exercise (pre-and post-), or the interaction of those variables on peak hip flexion, peak knee flexion, peak knee moment, peak hip moment, and peak lumbosacral moment. Conclusion: Ankle bracing had no effect on selected lower body kinematics and kinetics. More research should be done to better understand whether ankle bracing has the potential to increase injury at other joints.

Book The Effect of Ankle Prophylactic Bracing on Kinematics of the Lower Body when Landing from a Vertical Jump

Download or read book The Effect of Ankle Prophylactic Bracing on Kinematics of the Lower Body when Landing from a Vertical Jump written by Joshua Paul Rayburn and published by . This book was released on 2014 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study is to investigate the effects of the ASO ankle brace and the closed Gibney ankle taping method on kinematics of the lower body when landing from a vertical jump. By observing lower limb joint angular kinematics during landing this study may help to identify if ankle prophylactic bracing may increase the potential risk of injury to the more proximal unstabilized knee and hip joints. For this study, 10 females (age: 18-24 years), were randomly selected from a group (N= 24) of well-trained intercollegiate athletes, who had been competitive for at least 4 years in a jumping sport.

Book Ankle Bracing as a Mediator of the Influence of Attentional Foci on Landing Mechanics in Healthy Females

Download or read book Ankle Bracing as a Mediator of the Influence of Attentional Foci on Landing Mechanics in Healthy Females written by Mackenzie Haines and published by . This book was released on 2018 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Context: Biomechanics risk factors observed during landing task have been identified such as decreased hip and knee flexion, increased knee valgus, hip adduction and hip external rotation. These patterns have been related to the increase risk for ACL injury and could also be observed with decreased ankle range of motion (ROM). The effects of different forms of attentional focused instruction has been studied and is thought to optimize landing mechanics; decreasing risk for ACL injury. This has not yet been explored in a population with an external mechanical restriction such as an ankle brace. Objective: To determine the effects of lace-up ankle bracing and attentional focused instruction on lower extremity kinematics and kinetics during a landing task in healthy females Design: Crossover. Setting: Laboratory. Participants: 19 healthy females. Inclusion: aged 18-35, physically active with minimal familiarity of drop vertical jump task (DVJ). Exclusion: lower extremity musculoskeletal injury within last 6 months, history of lower extremity injury, vestibular, balance or connective tissue disorders, or history of ankle sprains. Interventions: Independent variables included condition (brace vs. no brace) and mode of attentional focus (external focus (EF) , internal focus (IF), neutral). All participants completed five DVJ trails for each different modes of attentional focus instruction for both bracing conditions. Main Outcome Measures: 3D trunk and lower extremity kinematics and kinetics were analyzed during landing phase of DVJ from initial contact to peak knee flexion Results: Bracing decreased peak ankle dorsiflexion (19.6°± 6.4° vs 25.9°± 5.3°) compared to non-braced. In the bracing vs. nonbraced condition, EF increased peak hip abduction (-3.8°±5.0° vs. -1.7°±4.2°), hip flexion (83.6°±14.3° vs. 79.0°±16.1°), and decreased knee valgus (-13.8°±6.6° vs. - 14.9°± 6.9°). Conclusion: EF instruction can aid in optimizing landing mechanics in healthy female population with mechanical restriction at the ankle is in place.

Book An Investigation Into the Effects of Cryotherapy on the Lower Body Kinetics in Landing

Download or read book An Investigation Into the Effects of Cryotherapy on the Lower Body Kinetics in Landing written by Andrew G. Jameson and published by . This book was released on 2000 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Effect of Ankle Bracing on Knee Joint Kinematics and Kinetics During Repeated Single Leg Hop and Drop Vertical Jump in High School Aged Girls

Download or read book The Effect of Ankle Bracing on Knee Joint Kinematics and Kinetics During Repeated Single Leg Hop and Drop Vertical Jump in High School Aged Girls written by Virginia Norene Christensen and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Background: Ankle bracing has not been studied for its effects of knee joint kinematics and kinetics in the adolescent female athlete. Hypothesis: A) A statistically significant mean increase of knee joint valgus and extensor moments and valgus angles would be found in the braced group during the drop vertical jump and the single log hop tests and B) A statistically significant mean decrease in knee joint varus and extensor moments and valgus angles will be found between pre- and post-test acclimation periods in the braced condition. Study Design: Randomized Controlled Trial. Methods: Fifteen adolescent female athletes performed Drop Vertical Jump (DVJ) and Single Leg Hop (SLH) tests without ankle bracing and with a lace-up style ankle brace. Subjects wore braces over a 1 week period and retested. Results: During the DVJ, bracing increased knee extensor moments during the first 50 ms of landing but had no affect on knee frontal plane moments. Bracing increased vertical ground reaction force (vGRF) within the first 50ms of landing, and peak vGRF with less time to achieve peak vGRF. During the SLH, bracing increased knee flexion at IC and decreased knee frontal plane displacement into valgus. Ankle bracing increased vGRF within the first 50ms of landing and decreased stance time. Conclusions: Ankle bracing increased vGRF and knee extensor moments during the first 50ms of landing. Clinical Relevance: The adolscent female athlete may be at risk for knee injury during the initial landing phse when wearing a lace-up style ankle brace.

Book The Effects of Prophylactic Ankle Bracing on Collegiate Women s Basketball Ankle Range of Motion Static Balance and Dynamic Balance

Download or read book The Effects of Prophylactic Ankle Bracing on Collegiate Women s Basketball Ankle Range of Motion Static Balance and Dynamic Balance written by Damian Ignacio Aguilar and published by . This book was released on 2018 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ankle braces are often used by athletic trainers across the nation in hopes of preventing ankle related injuries. Since prophylactic ankle braces are widely used and accepted, it is critical to understand the effects prophylactic ankle braces are having on ankle functionality and postural control both in a braced and non-braced state. However, the effects of prophylactic ankle braces over the period of a season has limited research. Thirteen collegiate women's basketball players, who are required to wear prophylactic ankle braces through a 20-week season, participated in this study. The purpose of this study was to determine the effect of prophylactic ankle bracing on passive range of motion, static balance (COG displacement, COG pattern tracking over a period of time), and dynamic balance (COG displacement in a dynamic setting, COG pattern tracking over a period, reach measures through SEBT) in collegiate women's basketball players across a 20-week season span. We rejected the null hypothesis and found differences in ROM, increases in Postural Stability scores, and improvements with Limits of Stability (LOS) scores. We also found a significant decrease in the anterior/lateral quadrant of the ASL test which suggests a change in COG placement over the 20-week span of the season. Although wearing prophylactic ankle bracing over the period of season showed shifts in ROM, improvements in COG location and postural stability scores, further research is needed on wearing ankle braces over a long period of time to determine when these changes are happening.

Book Computational and Experimental Simulations in Engineering

Download or read book Computational and Experimental Simulations in Engineering written by Kun Zhou and published by Springer Nature. This book was released on with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Dissertation Abstracts International

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2004 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Master s Theses Directories

Download or read book Master s Theses Directories written by and published by . This book was released on 2001 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Education, arts and social sciences, natural and technical sciences in the United States and Canada".

Book Effects of Chronic Ankle Instability and Ankle Bracing on Plantar Pressure During a Jump Landing Task

Download or read book Effects of Chronic Ankle Instability and Ankle Bracing on Plantar Pressure During a Jump Landing Task written by Jessica M. Rix and published by . This book was released on 2011 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objective: The purpose of this study was to investigate the differences in plantar pressure distribution between individuals with and without chronic ankle instability A secondary purpose was to explore the potential changes in pressure during a dynamic task while wearing a prophylactic ankle brace. Design and Setting: The mean peak plantar pressures over three regions and total foot for the braced and non-braced trials was used for statistical analysis. From these regions and the total foot, four dependant variables for medial/lateral pressure ratios were calculated. For each dependant variable, a two-way ANOVA was performed with one between (CAI and control) and one within (braced and non-braced) independent variables. Significance was set at p

Book Prophylactic Ankle Stabilizers and Their Effect on Lower Extremity Landing Mechanics During Drop Jump Landings to Fatigue

Download or read book Prophylactic Ankle Stabilizers and Their Effect on Lower Extremity Landing Mechanics During Drop Jump Landings to Fatigue written by Tameka A. Clanton and published by . This book was released on 2009 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effects of Ankle Bracing on Dynamic Stabilization in Subjects with Chronic Ankle Instability

Download or read book Effects of Ankle Bracing on Dynamic Stabilization in Subjects with Chronic Ankle Instability written by Brittany L. Taylor and published by . This book was released on 2008 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objective: The purpose of this study was to compare a lace-up ankle brace with a no-brace condition on the ability to return an athlete with CAI to a stable state by measuring the TTS following a jump-landing task. Design: Repeated measures within-subject design. Setting: Athletic Training Research Laboratory. Patients or Participants: Ten subjects, five males and five females (18.5625±.814yr; 174.0963±7.191cm; 69.2937±8.277kg) that fit the criteria for chronic ankle instability participated in this study. Measurements: Subjects participated in two separate testing sessions during which a jump-landing task was performed with one of two conditions: lace-up ankle brace or no ankle brace. The brace condition was randomized. During each session, five trials of a jump-landing task were performed on each leg. The jump-landing task consisted of a single-leg landing from a double-leg jump height equivalent to 50% of the subject's maximum jump height. Subjects jumped off of both feet from a distance 70cm away from the center of the force plate, reached up and touched the indicated marker, and landed on the force plate on a single test limb. The landing leg was randomized. Ground reaction forces were used to calculate TTS in the medial/lateral (MLTTS) and anterior/posterior (APTTS) directions. The independent variables were Condition (brace, no brace) and Side (injured, non-injured). A separate two-within (Condition, Side) repeated measures ANOVA was performed for APTTS and MLTTS. Main Outcome Measure(s): APTTS and MLTTS. Results: For APTTS, the Side by Condition interaction was not statistically significant (F1,9 = .004; p=.952). For MLTTS, the Side by Condition interaction was not statistically significant (F1,9 = .023; p= .884). No measurements were found to be statistically significant in either direction. Conclusion: This study was designed to show if the use of an ankle brace, like the Swede-O Universal would assist those subjects with CAI in reducing the amount of time it takes for them to stabilize after a jump landing task. Although the results of this study do not support these conclusions with statistical significance, it may provide an important direction in examining the connection between TTS, ankle bracing, and those with CAI. There is a definite need for further testing on more subjects with CAI so we can make a better conclusion about the use of the Swede-O Universal and its ability to reduce time to stabilization after a jump-landing task.