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Northern Michigan University

All NMU Master's Theses

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Full-Text Articles in Kinesiology

The Effect Of Step Rate Training On Running Economy And Biomechanics, Nahir Negron-Fernandez Dec 2023

The Effect Of Step Rate Training On Running Economy And Biomechanics, Nahir Negron-Fernandez

All NMU Master's Theses

It is known that running economy is a determinant of running performance. Increased step rate has been correlated with improved running economy, but it is unknown whether these improvements can be maintained with chronic training. The purpose of this study was to determine if a step rate training intervention improves running economy and improves lower body kinetic factors in distance runners. Nine participants were randomly assigned to either an intervention group (n = 7) undergoing a 6-week supplemental training program, or a non-training control group (n = 2). The intervention group trained three times a week, running at a higher …

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Transcutaneous Electrical Stimulation Does Not Decrease Torque Loss Over High Intensity Repetitions, Ian Koskinen May 2023

Transcutaneous Electrical Stimulation Does Not Decrease Torque Loss Over High Intensity Repetitions, Ian Koskinen

All NMU Master's Theses

Transcutaneous Electrical Stimulation, TENS, has been used widely as an analgesic and ergogenic aid for many years. Compared to other modalities of electrical stimulation, TENS has been shown to provide some benefits in exercise performance by reducing pain and increasing endurance in low intensity applications, such as time trial cycling or isometric endurance. While TENS has been shown to have a significant effect on exercise induced pain in individuals performing endurance activities, to my knowledge it has not been examined in high intensity contractions. 18 active young adults (age: 23.11 years ± 2.08, resistance training experience: 7.08 years ± 3.79, …

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The Effects Of Exogenous Virilizing Testosterone On Strength Training And Self-Compassion In Transgender Nonbinary Individuals, Nadine Sikora Aug 2022

The Effects Of Exogenous Virilizing Testosterone On Strength Training And Self-Compassion In Transgender Nonbinary Individuals, Nadine Sikora

All NMU Master's Theses

Previous exercise science research has excluded transgender nonbinary individuals from their studies. Exercise has been shown to improve symptoms of depression and anxiety as well as improve body composition. Purpose: Identify the impacts of exogenous testosterone on relative strength and levels of self-compassion in transgender nonbinary individuals. Methods: Eighteen untrained individuals (6 transgender nonbinary, 6 ciswomen, and 6 cismen, mean age of 23.7 ± 3.5 years) were recruited and randomly assigned to an 8-week resistance training group or a non-exercise control group. Participants completed a 12-question survey of self-compassion followed by, assessment of strength for chest and leg …

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Coordination Variability And Injury Risk In Experienced Collegiate Dancers, Emily Klinkman Oct 2021

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 …

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The Effects Of Shoe Type On Biomechanical And Physiological Responses To Stepping And Inclined Walking, Ashley L. Vansumeren May 2019

The Effects Of Shoe Type On Biomechanical And Physiological Responses To Stepping And Inclined Walking, Ashley L. Vansumeren

All NMU Master's Theses

The purpose of this study was to examine the effect of hiking shoes and hiking boots on the biomechanical responses to a stepping task and physiological responses to an inclined walking task. Participants (n = 16) performed six two minute stepping trials at a stepping rate of 72 bpm; three trials in hiking boots and three trials in hiking shoes. Following the stepping task, participants (n = 19) walked at 3.0 mph and 10% grade for five minutes in hiking shoes and hiking boots. Lower limb joint angles and moments were calculated using Visual 3D. Physiological data was averaged over …

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Compensatory Hip And Knee Mechanics In Transtibial Amputees During Stair Descent And Directional Task, Mindie Clark Jul 2018

Compensatory Hip And Knee Mechanics In Transtibial Amputees During Stair Descent And Directional Task, Mindie Clark

All NMU Master's Theses

This study compared lower limb mechanics in unilateral transtibial amputees and able bodied controls during strenuous activities of daily living (ADL). Seven unilateral transtibial amputee and five matched-abled bodied control participants executed stair descent on a four-step rehabilitation staircase followed by one of two anticipated directional tasks. Force, kinematics and gait parameters were chosen to compare mechanics and stride characteristics between the residual limb, intact limb and able-bodied dominant limb between a straight walking condition and a non linear directional movement (wide-step cutting task). Results indicated that significant compensatory mechanisms occurred in the intact limb, perhaps from decreased load tolerance …

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Assessing And Reporting Normative Data And Correlations In Adolescent Non-Professional Dancers, Alexandrea Holley Dec 2015

Assessing And Reporting Normative Data And Correlations In Adolescent Non-Professional Dancers, Alexandrea Holley

All NMU Master's Theses

Objective: The purpose of the current study was to gather normative data and determine if there was a correlation for multiple measures in adolescent dancers, specifically in relation to the hip joint including: balance, muscular strength, endurance, and flexibility. Design: Descriptive Correlation. Setting: Laboratory. Participants: Thirty-one female volunteers (mean age 12.52 ± 2.26), were recruited to participate in the university IRB approved study. Interventions: During the testing, the participants filled out a qualitative questionnaire, had their anthropometric data measured, and were assessed on flexibility of the hamstring. Functional measurements of muscular strength and endurance of the hip flexor, sacrum imbalance, …

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The Effect Of Yoga On Growth Hormone Secretion In Young Men And Women, Aaron Eastham Aug 2015

The Effect Of Yoga On Growth Hormone Secretion In Young Men And Women, Aaron Eastham

All NMU Master's Theses

PURPOSE The purpose of this study was to examine the effects of an acute bout of yoga exercise on the secretion of growth hormone (GH) in healthy, young males and females. METHODS Seventeen participants (mean age 23.9 ± 3.9) were volunteered and completed the university IRB approved study. Participants completed a 60-min, certified instructor led yoga session. Blood (5ml) was collected at rest, 10-min prior (PRE), at the 35-min point during (MID), and immediately post (POST) the yoga session. Serum GH was measured using immunochemiluminometric assay. Resting GH levels were statistically compared to mid- and post-yoga GH levels using a …

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The Perceived Demands Of Crossfit, Bryanne N. Bellovary Apr 2014

The Perceived Demands Of Crossfit, Bryanne N. Bellovary

All NMU Master's Theses

Rhabdomyolysis is the breakdown of muscle tissue causing myoglobin, creatine kinase, and other intracellular proteins and electrolytes to leak into circulation, disrupting cell homeostasis. Exertional rhabdomyolysis (ER) occurs after extremely rigorous physical training that could include high amounts of strenuous eccentric exercise. There has been an increase in reports for mild to severe ER as well as other musculoskeletal injuries as the popularity of extreme conditioning programs (e.g., CrossFit®) increases. Therefore, the main purposes of this investigation were to identify: primary risk factors associated with ER during CrossFit®, CrossFit® workouts that might induce a higher risk for the development of …

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