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The Effects of Forearm Wearable Resistance on Horizontal Force-Velocity Profiles in Sprinting

Description
Given the importance of arm mechanics in sprinting and the utility of F-V profiles, the purpose of the following study was to determine the effects of forearm WR on the horizontal F-V profile during sprinting. To determine the effect of forearm WR on the horizontal F-V profile during sprinting, a…

Given the importance of arm mechanics in sprinting and the utility of F-V profiles, the purpose of the following study was to determine the effects of forearm WR on the horizontal F-V profile during sprinting. To determine the effect of forearm WR on the horizontal F-V profile during sprinting, a cross-sectional, repeated measure within subjects design was used, with athletes assessed both with and without forearm WR. The WR condition used 2% BM attached to the forearms. In a randomized order, subjects performed a series of maximal effort 30 m sprints; two unloaded sprints and four with WR. Three sprints were executed from a block start: one unloaded, and two with WR. The additional three sprints were executed from a split-stance start: one unloaded and two with WR. From this study, 2%BM WR was found to significantly increase sprint times from both block and standing starts. It also significantly decreased V0 and Fsystem from a block start and Psystem from a standing start. The significance from a block start may imply the arm’s greater role during the start and acceleration phases of sprinting during that position. The overloading of V0 from a block start in the F-V profile points to forearm WR as a possible tool for athletes to use during training who are overly force dominant from a block start and need to shift their profile to V0 dominance or balance in general.
ContributorsMishra, Megna (Author) / Nolan, Nicole (Thesis director) / Feser, Erin (Committee member) / College of Health Solutions (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
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Pediatric Shoulder Rehabilitation

Description

Objectives:
As a result of increased participation in competitive sports, shoulder instability, subluxations, and dislocations are common injuries in the adolescent athlete. These injuries worsen when athletes over train, make physical contact, and do not take enough time for rest between injuries. Protocols and therapies need to be implemented to prevent…

Objectives:
As a result of increased participation in competitive sports, shoulder instability, subluxations, and dislocations are common injuries in the adolescent athlete. These injuries worsen when athletes over train, make physical contact, and do not take enough time for rest between injuries. Protocols and therapies need to be implemented to prevent subsequent injuries, including progressive measurement of rehabilitation and return to play (RTP) outcomes. The goal of treatment for these athletes is to return them to their previous level of performance and prevent re-injury.

The purpose of this quality improvement evidence-based project was to determine if the use of the Pediatric Adolescent Shoulder Survey (PASS) affects return to play. The aims of this project were to determine if there was a change in return to play (RTP) outcomes, compare length of RTP between operative and non-operative groups, and determine if PASS scores improved over time.

Methods:
The PASS is a 13 item, patient reported outcomes (PROs) survey assessing symptoms, limitations, compensatory mechanisms, and emotional distress. It is reliable and valid for athletes who have acute shoulder injuries and decreased range of motion or strength.

After obtaining Institutional Review Board (IRB) approval from the institution and university, providers at a southwestern sports medicine clinic were educated on administration and scoring of the survey. Surveys were administered to athletes ages 8-18 who presented with shoulder injuries at intervals. Retrospective and prospective chart reviews were obtained at baseline (control group) and post intervention (intervention group). Return to play (RTP) days and Pediatric Adolescent Shoulder Survey scores were recorded.

Results:
Independent t-tests were calculated to compare mean RTP days from control and intervention groups, RTP for operative and non-operative groups within the control and intervention groups. Statistically significant t (20) = -2.827, p = 0.03) differences were noted between operative group for the intervention group, (n=9), M=136.00 (SD=51.49) days vs non-operative group, M= 83.68 (SD=31.78) days. No statistically significant difference between control group M =118.68 (SD=55.95) days and intervention group M=107.52 (48.77) days was noted. PASS scores showed improvement over time.

Conclusion:
The PASS instrument may positively affect RTP. There was a significant change in RTP for the whole group. Non-operative patients RTP sooner than operative for the whole sample. PASS scores improved over time for all patients.
ContributorsKunz, Brittany (Author) / O'Haver, Judith (Thesis advisor) / Uri-Glover, Johanna (Thesis advisor)
Created2018-04-30
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Muscle Recovery; Review of Cold-Water Immersion Therapy

Description
Athletes often train consecutive days in a row without a period of rest long enough to fully
recover before the next training session. Regular muscle soreness usually resolves in a week, but rarely do athletes get that time to recover. While muscle recovery is important for optimizing daily functioning, it is…

Athletes often train consecutive days in a row without a period of rest long enough to fully
recover before the next training session. Regular muscle soreness usually resolves in a week, but rarely do athletes get that time to recover. While muscle recovery is important for optimizing daily functioning, it is also of growing importance for athletes to optimize their athletic performance. Cold water immersion is a common technique used to improve muscle recovery. Whether CWI improves the body’s physiological recovery response or impacts the individual’s psychological recovery is unknown, but research has shown that cold water immersion performed at 10-15 degrees Celsius and immersion times between 5 and 15 minutes are better for muscle recovery than passive recovery.
ContributorsGinn, Jessica J (Author) / Nolan, Nicole (Thesis director) / Broman, Tannah (Committee member) / College of Health Solutions (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05