Medicine and Health Sciences Commons^™

Management Of Youth Sport-Related Concussion By Urban And Rural Practitioners: A Pilot Study, Brett R. Fox

All NMU Master's Theses

Sport-related concussions (SRC) occur at alarming rates among high school athletes (ages 13-18), which made the Center for Disease Control and Prevention and other agencies classify it as an “epidemic”. If improperly managed, physical, mental, and emotional consequences can occur for SRC patients. Due to these consequences all 50 states in the US have passed legislation requiring medical release from a practitioner before a student-athlete can return to athletics following an SRC, yet there is no universally accepted consensus on how to medically manage this common injury. A 22-item, validated survey was distributed to Michigan practitioners who sign off on …

Concussion And Mental Health: Case Series, Haley M. Clark

All NMU Master's Theses

Concussion is the most common traumatic brain injury in the United States, and is thought to lead to adverse effects on mental health. No studies to date have examined mental health throughout concussion recovery. This project examined the effect of concussion on three aspects of mental health: anxiety (Hamilton Anxiety Rating Scale), depression (Beck’s Depression Inventory), and aggression, (Buss-Perry Aggression Questionnaire) at three time points (baseline, mid-season, and postseason) and if the athlete had a concussion, they completed the questionnaire once upon diagnosis, bi-weekly until return-to-play, and bi-weekly for two weeks after being cleared for participation. Each concussion showed an …

A Systematic Review: The Effect Of Prophylactic Braces On Reducing Risk Factors Related To Acl Injury In Athletes, Zak Linczeski

All NMU Master's Theses

Purpose: Anterior cruciate ligament (ACL) injuries are one of the most common sports-related injuries as they account for around 100,000 injuries per year. This study sought to review research on prophylactic knee bracing (PKB) for the reduction of the risk factors related to injury of the ACL.

Methods: An extensive search of articles from 1990-2021 was performed with inclusion criteria of no previous ACL injury, no knee injury or surgery in the past 6 months, the use of a hinged knee brace, and use of kinetic, kinematic, and proprioceptive variables. All studies underwent a PEDro score evaluation to determine article …

Increase In 1rm Back Squat After Abdominal Stabilizing Maneuvers, Caro Els

All NMU Master's Theses

Increasing intra-abdominal pressure (IAP) during free weight exercises can protect the lumbar spine from excess movement; a cause of lower back pain. Abdominal bracing (AB) and abdominal hollowing (AH) are two stabilizing maneuvers that increase IAP. Previous literature primarily compared AH and AB in therapy settings on bodyweight single joint movements. The effect of AB and AH during a multi-joint movement involving a maximum or near maximum external load is unknown. The purpose of this study was to compare the effect of AB and AH on lower limb muscle activity and the maximum amount of external weight lifted during a …

Coordination Variability And Injury Risk In Experienced Collegiate Dancers, Emily Klinkman

All NMU Master's Theses

Dance is a sport that places a number of physical demands upon the human body, and injuries are a common occurrence in the sport. While it has not yet been linked to dance-related injury, coordination variability (CV) is a measure of how much movement strategy changes between repetitions of a task and low levels of CV have been linked to injury in other sports. This study aimed to determine the relationship between CV and dance injury in collegiate dancers. Eight (8) undergraduate student subjects were recruited from the dance major and minor, BFA major and minor, and recreational dancers who …

The Impact Of Participation In A Mentored Cycling Program, Dana Bolduc

DNP Scholarly Projects

Physical activity (PA) has the potential to have a positive impact on mental health conditions such as anxiety, depression and self-esteem. In particular, this project focused on self-esteem because low self-esteem can lead to increased risk of developing anxiety or depression. In contrast, high self-esteem can have a protective effect against anxiety and depression. Group PA programs combined with mentorship have been shown to build relationships and enhance self-esteem. The purpose of this DNP project was to determine the impact of participation in a rural midwestern, mentored cycling program on self-esteem in an at-risk adolescent population. Self-esteem was measured using …

The Physiological Effects Of Therapy Dogs During Exercise For Sedentary Adults, Josie Lynne Mazzone

All NMU Master's Theses

Previous research has shown therapy dogs may be utilized to attenuate heart rate (HR) and blood pressure (BP) responses during various types of stressors due to an increase in oxytocin (OT) and decrease in cortisol (CL) production. These hormonal changes have also been shown to enhance exercise performance. Purpose: This study aimed to determine if physiological responses to exercise changed in the presence of a therapy dog for sedentary adults. Methods: Seven adult subjects (mean age of 30.86 ± 14.07 years) who self-reported less than 150 min of physical activity per week participated in a graded walking test with a …

Trial Of Newgait System To Alter Running Mechanics In High School Athlete: A Case Report, Kathy Tooman, Jozie Weiler, Stacy Ruotsala, Sarah Breen

Other

Trial of NewGait System to Alter Running Mechanics in High School Athlete: a Case Report

A Comparison Of The National Football League Coaches Strength And Conditioning Practices 1997-1998 To 2018, Corey Fitzgerald

All NMU Master's Theses

This study describes the results of a survey of the strength and conditioning practices of the National Football League’s (NFL) strength and conditioning (S&C) coaches. The primary purpose was to identify the common and unique aspects of the NFL S&C practices during 2018. A secondary purpose was to compare those results to 1997-1998 (‘97-98) to determine differences across years. The survey response rate was 28.1% (9 of 32 NFL teams) agreeing to participate. The survey instrument was a 150 item assessment divided into 10 sections examining the entire training program. Results revealed that subjects test 6.8 ± 3.1 fitness variables …

Successful Shot Locations And Shot Types Used In Ncaa Men’S Division I Basketball, Olivia D. Perrin

All NMU Master's Theses

The primary purpose of the current study was to investigate the effect of court location (distance and angle from basket) and shot types used on shot success in NCAA Men’s DI basketball during the 2017-18 season. A secondary purpose was to further expand the analysis based on two additional factors: player position (guard, forward, or center) and team ranking. All statistical analyses were completed in RStudio and three binomial logistic regression analyses were performed to evaluate factors that influence shot success; one for all two and three point shot attempts, one for only two point attempts, and one for only …

General Strength And Muscular Endurance: Relationship To V1- And V2-Skate Skiing Economy In Collegiate Cross-Country Skiers, Ian Torchia

All NMU Master's Theses

Introduction Cross-country skiing is a power-endurance sport requiring upper and lower body activation for propulsion across the ground. While high aerobic markers such as VO_2max and lactate threshold are important performance indicators, recent research has demonstrated the importance of full-body general strength and muscular endurance in skiing success. The purpose of this study was to examine the relationship of strength indices via a full-body series of muscular endurance tests, as well as a general 1-RM strength test, to VO₂ skiing economy utilizing the V1- and V2-skate technique.

Methods Oxygen uptake was measured during baseline and economy testing on …

Swimming Performance Post Blood Flow Restriction Training In Collegiate Swimmers, Amy E. Boettcher

All NMU Master's Theses

PURPOSE: To determine if blood flow restriction (BFR) training improved performance and physiological factors in collegiate swimmers. METHODS: Participants (n=10) separated into 2 groups (control [CON] & experimental [OCC]), completed 9 supervised trainings within 3 weeks. Pre- and post-testing included: VO_2max, Wingate, swim time trials (TT), strength, and DEXA. Training was identical except OCC underwent bilateral thigh BFR [blood pressure (BP) cuffs inflated 70-90% of systolic BP]. Training: treadmill walking 20 minutes (5x3-minutes at 3 mph, 5% grade, 1-minute rest), followed by bodyweight strength training (squats, lunges & step-ups). Pain levels (scale: 1-10) were taken after …

The Effects Of Stress On American Football Overhand Throw Accuracy, Cale Anderson

All NMU Master's Theses

The American overhand football throw is a highly scrutinized position because of all the different kinds of stress both physical and psychological that are put onto those players. The current study sought to develop a formula using psycho-emotional and physical variables to predict the performance of an American overhand football throw under stressful/non-stress situations. Participants were tested on two days. The stress situation is where tennis balls were thrown, and the subject did not know where they were going to throw. The non-stressed was a 3 step drop without knowing what target they were throwing at and these conditions were …

Biomechanical Adaptations To An Implemented Ramp Angle In Recreational Alpine Skiers, Stephanie R. Moore

All NMU Master's Theses

Most ski boot-binding complexes have a negative ramp angle. This angle is not regulated or reported in the alpine ski industry, but may influence skier balance and pressure control. Thus, joint coordination and center of pressure maintenance in alpine skiers (n = 19) was investigated during simulated ski squat and balance tasks with increasing binding ramp angles (0°, 1°, 2°). Greater sagittal plane center of pressure excursions were observed with ski-booted tasks compared to barefoot conditions during squats and balance simulations. Squat tasks performed on skis resulted in more uncoordinated knee-ankle movement, however, this effect was reduced with the highest …

Changes In Balance And Joint Position Sense During A 12-Day High Altitude Trek: The British Services Dhaulagiri Medical Research Expedition, Sarah B. Clarke, Kevin Deighton, Caroline Newman, Gareth Nicholson, Liam Gallagher, Christopher J. Boos, Adrian Mellor, David R. Woods, John P. O'Hara

Journal Articles

Postural control and joint position sense are essential for safely undertaking leisure and professional activities, particularly at high altitude. We tested whether exposure to a 12-day trek with a gradual ascent to high altitude impairs postural control and joint position sense. This was a repeated measures observational study of 12 military service personnel (28±4 years). Postural control (sway velocity measured by a portable force platform) during standing balance, a Sharpened Romberg Test and knee joint position sense were measured, in England (113m elevation) and at 3 research camps (3619m, 4600m and 5140m) on a 12-day high altitude trek in the …

Post-Activation Potentiation: Decay Or Fatigue Delay, Ryan L. Meidinger

All NMU Master's Theses

Post-activation potentiation has been shown to improve jumping performance and other ballistic activities. The improvements in performance have been attributed to four main mechanisms, but the most important mechanism to the current study is the improvement in neural activity that leads to greater levels of potentiation. Post-activation potentiation has been shown to be stimulated by a maximal activity, called a conditioning contraction, and can be used as a warm up. In studies that have not shown the effects of post-activation potentiation, the proposed reason is fatigue, but the interaction of post-activation potentiation and fatigue have not been thoroughly tested. The …

The Effect Of Hyperthermic Whole Body Heat Stimulus (Sauna) On Heat Shock Protein 70 And Skeletal Muscle Hypertrophy In Young Males During Weight Training, Brandon C. Jones Mr.

All NMU Master's Theses

The traditional Finnish steam sauna is theorized to aid skeletal muscle hypertrophy by stimulating Heat Shock Protein 70 (HSP70), which acts as a molecular chaperone to the folding of functional skeletal muscle. The aim of this study was to investigate if stimulating HSP70 by using a sauna (45 – 50 ͦC, 80% Humidity) three times per week, for 15 minutes, could aid skeletal muscle hypertrophy during six weeks of resistance training in a young (21.38 ± 1.9 yrs.), recreationally trained male population. Thirteen subjects were randomly distributed into 3 groups [resistance Training + sauna (RT+S, n=5), RT + Relaxation (RT+R, …

The Acute And Chronic Effects Of Highly Cushioned Shoes On Loading Characteristics In Recreational Runners, Jessica Corkin

All NMU Master's Theses

Recently, highly cushioned shoes (HCS) entered the running market, and manufacturers suggested extra cushioning potentially reduced injury rates through superior shock absorption, implying less impact upon foot strike versus other shoes. Hence, the purpose of this study was to examine the effects of a 4-week HCS intervention on running-related impact forces in adult recreational runners. We hypothesized HCS would result in altered force attenuation compared to standard cushioned shoes (SCS) at baseline. After 4-weeks, we speculated differences would not be attenuated. Twenty-nine healthy runners (18-60 yrs of age) who had never worn HCS were randomized to either an intervention (INV) …

The Effect Of High Altitude On Central Blood Pressure And Arterial Stiffness, Christopher Boos, Emmanuel Vincent, Adrian Mellor, David Woods, Caroline Newman, Richard Cruttenden, Matt Barlow, Mark Cooke, Kevin Deighton, Peter Scott, Sarah B. Clarke, John O'Hara

Journal Articles

No abstract provided.

British Services Dhaulagiri Medical Research Expedition: A Unique Military And Civilian Research Collaboration, Adrian Mellor, Josh Bakker-Dyos, Marc Howard, Christopher Boos, Mark Cooke, Emmanuel Vincent, Peter Scott, John O'Hara, Sarah B. Clarke, Matt Barlow, Jamie Matu, Kevin Deighton, Caroline Newman, Richard Cruttenden, David Holdsworth, David Woods

Journal Articles

No abstract provided.

Changes In Appetite, Energy Intake, Body Composition And Circulating Ghrelin Constituents During An Incremental Trekking Ascent To High Altitude, Jamie Matu, John O'Hara, Neil Hill, Sarah B. Clarke, Christopher Boos, Caroline Newman, David Holdsworth, Theocharis Ispoglou, Lauren Duckworth, David Woods, Adrian Mellor, Kevin Deighton

Journal Articles

No abstract provided.

A Comparison Of Stride Length And Lower Extremity Kinematics During Barefoot And Shod Running In Well Trained Distance Runners, Peter Francis, James Ledingham, Sarah B. Clarke Phd, Dj Collins, Philip Jakeman

Journal Articles

Stride length, hip, knee and ankle angles were compared during barefoot and shod running on a treadmill at two speeds. Nine well-trained (1500m time: 3min:59.80s ± 14.7 s) male (22 ±3 years; 73 ±9 kg; 1.79 ±0.4 m) middle distance (800 m – 5,000 m) runners performed 2 minutes of running at 3.05 m·s^-1 and 4.72 m·s^-1 on an treadmill. This approach allowed continuous measurement of lower extremity kinematic data and calculation of stride length. Statistical analysis using a 2X2 factorial ANOVA revealed speed to have a main effect on stride length and hip angle and footwear to …

Upper Body Characteristics Related To Double Pole Performance In Female Cross Country Skiers, Karmen M. Whitham

All NMU Master's Theses

The purpose of the current study was to correlate upper body (UB) lean mass (UBLM), UB maximal strength (UBMS), and average power production during a 3-min ski ergometer (SERG) test to predict the dependent variable, a one-kilometer uphill double pole time trial (DPTT) on snow. We hypothesized UBLM would be most important to performance. All tests were conducted within four weeks of completing the championship phase of a Division I cross country (XC) ski season. Skiers (n=10; all females) performed the mass-start DPTT on snow (i.e., criterion measure), SERG, and UBMS separated by at least a few days recovery. Lastly, …

Reactive Strength Index-Modified In Different Plyometric Tasks, Josh Walker, Sarah B. Clarke, Emma Waller, Aaron Robey-Broome, Randall L. Jensen

Conference Presentations

The Reactive Strength Index-Modified (RSlmod) is a reliable method of measuring the explosiveness of an athlete during a range of plyometric exercises. The purpose of the current study was to measure the between-limb differences in RSlmod across three different plyometric tasks. Eleven recreationally active participants performed countermovement jumps, stop jumps and single-leg jumps. The study found no significant differences in RSlmod between dominant and non-dominant limbs across all three tasks (p>0.05), but did find RSI,d to be higher in the stop jump than a countermovement jump and single leg stop jump for both dominant and non-dominant limbs. These findings …

7-Weeks Of Yoga Training And Its Effects On Flexibility, Rate Of Force Development, And Jump Height In Olympic Weightlifters, Andrew Ernst

All NMU Master's Theses

The purpose of the current study was to determine what effects 7-weeks of yoga training had on Olympic weightlifters flexibility, rate of force development, and jump height. Pre- and post-testing was performed consisting of flexibility and jump performance measurements. The participants performed a sit and reach test followed by a loaded overhead squat test with barbell. The overhead squat test was performed with reflective markers and recorded video to assess joint angles. A countermovement jump and snatch, at 80% of their one repetition maximum, was performed next to measure rate of force development and jump height. The participants then were …

Reactive Strength Index-Modified In Different Plyometric Tasks, Josh Walker, Sarah B. Clarke, Emma Waller, Aaron Robey-Broome, Randall L. Jensen

Conference Presentations

No abstract provided.

Exercise Intensity And Performance Aspects Of Snow Biking Through The Use Of A Fat Bike, Kevin C. Phillips

All NMU Master's Theses

The aim of this study was to quantify, describe, and compare the exercise intensity and performance aspects of riding a fat bike, in a time trial (TT) format, on a natural earthen trail (ET) vs. on a groomed snow trail (ST). Eleven subjects, nine males and two females, participated in this two part study. Heart rate (HR) was used to quantify exercise intensity, examining average heart rate (HR_avg), and peak heart rate (HR_peak). In addition, a global positioning system (GPS) watch was used to assess time to complete the trail, average speed (speed_avg), and …

The Acute Effects Of The Prevent Injury Enhance Performance Programme (Pep) On Acl Injury Risk Factors, Chris Mccann, Sarah B. Clarke

Conference Presentations

No abstract provided.

The Effects Of High Intensity Intermittent Exercise In Normobaric Hypoxia On Aerobic Capacity And Body Composition In Overweight And Obese Sedentary Adults, Max W. Adolphs

All NMU Master's Theses

The purpose of this study was to examine if high intensity intermittent exercise (HIIE) combined with normobaric hypoxia had a multiplicative effect on body composition, maximal oxygen uptake (VO_2max), and resting energy expenditure (REE) in overweight and obese sedentary adults. Twelve participates were recruited for the study. Participants were randomly assigned to either a hypoxic training (HT) group equivalent to 3,048 m (F_IO₂ = 14.5%) or a normoxic training (NT) group equivalent to 0 m (F_IO₂ = 20.9%) three times a week for six weeks in a normobaric hypoxic chamber. HIIE consisted …

Lower Limb Coordination During A Land-Cut Task Following Anterior Cruciate Ligament Reconstruction And Rehabilitation, Sarah B. Clarke, Ian Kenny, Andrew Harrison

Conference Presentations

No abstract provided.