Kinesiology Commons^™

Changes In Predicted Muscle Coordination With Subject-Specific Muscle Parameters For Individuals After Stroke, Brian A. Knarr, Darcy S. Reiman, Stuart A. Binder-Macleod, Jill S. Higginson

Journal Articles

Muscle weakness is commonly seen in individuals after stroke, characterized by lower forces during a maximal volitional contraction. Accurate quantification of muscle weakness is paramount when evaluating individual performance and response to after stroke rehabilitation. The objective of this study was to examine the effect of subject-specific muscle force and activation deficits on predicted muscle coordination when using musculoskeletal models for individuals after stroke. Maximum force generating ability and central activation ratio of the paretic plantar flexors, dorsiflexors, and quadriceps muscle groups were obtained using burst superimposition for four individuals after stroke with a range of walking speeds. Two models …

Mechanomyographic Parameter Extraction Methods: An Appraisal For Clinical Applications, Morufu Olusola Ibitoye, Nur Azah Hamzaid, Jorge M. Zuniga, Nazirah Hasnan, Ahmad Khairi Abdul Wahab

Journal Articles

The research conducted in the last three decades has collectively demonstrated that the skeletal muscle performance can be alternatively assessed by mechanomyographic signal (MMG) parameters. Indices of muscle performance, not limited to force, power, work, endurance and the related physiological processes underlying muscle activities during contraction have been evaluated in the light of the signal features. As a non-stationary signal that reflects several distinctive patterns of muscle actions, the illustrations obtained from the literature support the reliability of MMG in the analysis of muscles under voluntary and stimulus evoked contractions. An appraisal of the standard practice including the measurement theories …

The Relationship Between Dorsiflexion Range Of Motion And Knee Kinematics In A Land-And-Jump Task, Nate Brookreson

EWU Masters Thesis Collection

The study examined the relationship between weight-bearing and non weight-bearing dorsiflexion range of motion and frontal knee kinematics at initial ground contact and maximal knee flexion in a land-and-jump task. Thirteen male participants (age = 23 + 2.35 y, height = 181.4 + 5.68 cm, mass = 84.5 + 17.2 kg) proficient in landing and jumping techniques and free from lower limb injury participated in the study. Measurement of ankle range of motion was conducted utilizing non weight-bearing and weight-bearing positions prior to participating in the land-and jump task. During the jump, a 10-camera Vicon 3D Motion Analysis System captured …

Greater Polar Moment Of Inertia At The Tibia In Athletes Who Develop Stress Fractures, Lee A. Weidauer, Teresa Binkley, Matthew Vukovich, Bonny Specker

Health and Nutritional Sciences Faculty Publications

Background: Several previous investigations have determined potential risk factors for stress fractures in athletes and military personnel.
Purpose: To determine factors associated with the development of stress fractures in female athletes.
Study Design: Case-control study; Level of evidence, 3.
Methods: A total of 88 female athletes (cross-country, n ¼ 29; soccer, n ¼ 15; swimming, n ¼ 9; track and field, n ¼ 14; volleyball, n ¼ 12; and basketball, n ¼ 9) aged 18 to 24 years were recruited to participate in a longitudinal bone study and had their left distal tibia at the 4%, 20%, and 66% sites …

Unaccustomed Exercise Causes Rhabdomyolysis, Yuri Feito

Faculty Articles

Cross Fit TM is a relatively new strength and conditioning program defined as “constantly varied, functional movements, performed at a high intensity”. The goal of the program is to increase “work capacity across broad time and modal domains” [1]. Even though this training modality has been criticized by the main stream media for “high risk of injury” most of these claims have been anecdotal, as recent evidence suggest this training modality is not any more “dangerous” than other exercise programs [2]. One of the biggest criticisms of this training modality has been its association with Rhabdomyolysis, a condition that results …

Alterations And Specifications Of Excess Post-Exercise Oxygen Consumption: A Review, Genevieve Kocoloski, Anne R. Crecelius

Health and Sport Science Faculty Publications

This review describes oxygen consumption, both in terms of a goal of weight management and aerobic training. It introduces excess postexercise oxygen consumption (EPOC) and the benefits that can come from it. EPOC can aid in weight management as a means to continue to expend energy even after exercise has ceased. This review also discusses the many determinants of EPOC and analyzes the effects of various conditions on the elevated consumption. Such conditions include duration and intensity of exercise, training status, and supplementation. Later discussed are the possible underlying mechanisms and how they are responsible for EPOC. Although they have …

Effects Of Imagery On Effort Perception And Cycling Endurance, Selen Razon, Kyle Mandler, Guler Arsal, Umit Tokac, Gershon Tenenbaum

Kinesiology Faculty Publications

The effect of associative and dissociative imagery was tested on a range of psychological-, physiological-, and performance-related variables during a progressive cycling task using a quantitative approach. Participants (n ¼ 45) were randomly assigned to dissociative imagery, associative imagery, and no imagery conditions and performed a progressive cycling task at 10% above anaerobic threshold up to the point of volitional fatigue. Rate of perceived exertion (RPE), attention focus, and heart rate were monitored and assessed at 1-min intervals. Lactic acid (LA) accumulation was recorded at RPE ¼ 5 (i.e. “strong effort”) and at the point of volitional fatigue. A series …

A Comparison Of Two Diabetic Education Programs Designed To Treat Adult Onset Diabetes Mellitus, Katelyn Dian O'Rear

Kinesiology Theses - Archive

The purpose of this study was to compare the diabetic education programs of two certified diabetic dietitians, one with heavy focus on diet and the other with focus on exercise, over 6 months to determine which program was more successful in the treatment of type 2 diabetes. A total of 40 randomly selected subjects that met the criteria for having type 2 diabetes mellitus were separated into 2 groups (exercise and diet). Participants in each group had an initial evaluation of their body mass index, hemoglobin A1c, morning fasting blood sugar, waist circumference, weight, and blood pressure. These measures were …

Effects On Oxygen Consumption And Metabolic Gene Expression When Determining Experimental Exercise Intensity Based On Exercise Capacity Tests Conducted In Hypoxic And Normoxic Environments, Dustin Slivka, Matthew Ws Heesch, Charles L. Dumke, John S. Cuddy, Walter S. Hailes, Brent C. Ruby

Health and Kinesiology Faculty Publications

Abstract: Exercise intensity can be set relative to VO2 max measured during hypoxic or control conditions in studies investigating exercise in hypoxic environments. It currently is not clear which is the most appropriate method.

Objective: The objective of this brief report is to determine the response to 1 hour of cycling at 60% of peak power when measured in either normoxic or hypoxic conditions.

Methods: Eleven recreationally active male participants (24 ± 4 yrs, 173 ± 20 cm, 82 ± 12 kg, 15.2 ± 7.1% fat, 4.0 ± 0.6 L x min-1 VO2 max) completed two 1 …

Shoulder Impingement In Water Polo Players, Kelly A. Davis

Scripps Senior Theses

Water polo is a highly dynamic and physically demanding sport that has heretofore not inspired nearly as much research as other overhead sports such as baseball or swimming. As in almost all overhead sports, water polo puts its players at high risks for shoulder injuries since the motions required to perform the sport at an optimum level push the limits of normal shoulder function.

Human shoulders are inherently unstable as a tradeoff to their flexibility. Because of this instability, many structures are required to work concurrently to keep the shoulder in place. These structures include muscles, ligaments and cartilages. It …

Prevalence And Incidence Rates Are Not The Same: Letter To The Editor, Yuri Feito

Faculty Articles

I recently became aware of an article by Weisenthal et al,² “Injury Rate and Patterns Among CrossFit Athletes,” published in the April 2014 issue of your journal. Considering this is a topic of interest to me, I read the article with great expectations and detail. I commend the authors for their fantastic job, both in their methodology as well as in their interpretation of their findings. They truly did a great job explaining their definition of what constituted an injury, which has been lacking in several studies, as well as providing great recommendations for the “safe” participation in this …

The Effects Of Exercise-Induced Muscle Damage On Aerobic Capacity Tested Through Repeated Vo2max Tests, Luke Burnett

Honors Theses

High-intensity resistance training alongside aerobic training has been seen to improve aerobic performance due to the gains strength that accompany said resistance training. However, it has been documented that the exercise-induced muscle damage (EIMD) that results from the resistance training can impair aerobic performance in the days following. Therefore, the purpose of this study was to assess the time-course of recovery from EIMD for up to seven days following muscle-damaging protocol. Eight recreationally trained participants (age 21.88 ± 0.99 yr., mass 70.02 ± 11.14 kg, height 171.61 ± 8.99 cm) volunteered to participate in five testing sessions over the course …

Obesity-Related Hormones And Metabolic Risk Factors: A Randomized Trial Of Diet Plus Either Strength Or Aerobic Training Versus Diet Alone In Overweight Participants, Allan Geliebter, Christopher N. Ochner, Carl L. Dambkowski, Sami A. Hashim

Lander College of Arts and Sciences Publications and Research

There is debate about the additive effects of exercise in conjunction with diet to treat obesity, and not much is known about the differential effects of strength versus aerobic training. This randomized controlled trial examined the effects of diet plus strength training, diet plus aerobic training, or diet only on metabolic risk factors associated with obesity. Eighty-one overweight and obese participants completed the 8-week intervention. All participants received an energy-restrictive formula diet with an energy content based on 70% of measured resting metabolic rate (RMR). Participants assigned to an exercise group trained 3 days/week under supervision. Anthropometrics and fasting hormones …

Effects Of A Ten Week Barbell Deadlift Training Program On Vertical Jump Height In College-Aged Women, Kendra D. Olinghouse, Matt S. Stock, Jacob A. Mota, Elias M. Carrillo, Ibrahim K. Munayer, Jocarol E. Shields, Micheal J. Luera, Brennan J. Thompson

Kinesiology and Health Science Faculty Publications

The barbell deadlift is a large muscle mass exercise that primarily involves extension at the hip and knee joints. Although it is often incorporated into strength training programs with a variety of other exercises (e.g., back squat), no previous studies have examined the effects of deadlift training on strength or power adaptations. The purpose of this investigation was to examine the effects of a ten week barbell deadlift training program on vertical jump height in previously untrained women. Twenty-eight women (mean ± SD age = 22 ± 2 years) were randomly assigned to either the training group (n = 17) …

Relationships Among Maximal And Explosive Strength Production Of The Leg Extensors And Vertical Jump Peak Power Output In Female Youth Volleyball Athletes, Alexander S. Drusch, Jacob A. Mota, Kendra D. Olinghouse, Matt S. Stock, Brennan J. Thompson

Kinesiology and Health Science Faculty Publications

Architectural and physical performance measurements are commonly implemented to identify various physical capacities in many populations. However, previous research has suggested architectural measures, notably in the leg extensors, are ineffective predictors of vertical jumping (VJ) performance. Given the functional relevance of rapid strength development on explosive dynamic tasks, further research is warranted examining, a) the presence of associations of maximal (e.g., peak torque; PT) and, in particular, explosive (e.g., rate of torque development; RTD) strength-related characteristics with jumping performance in the leg extensors, and b) the extent to which PT and RTD either uniquely, or synergistically contribute to VJ performance. …

Pedestrian Head Protection During Car To Pedestrian Accidents: In The Event Of Primary Impact With Vehicle And Secondary Impact With Ground, Vishal Gupta

Wayne State University Dissertations

Current regulations for assessing pedestrian safety use a simplified test setup that ignores many real-world factors. In particular, the level of protection is assessed using a free-motion headform impacting the vehicle's hood at a fixed angle. As such, this test setup does not capture the effect due to the vehicle front-end profile, nor does it comprehend injury due to a possible secondary impact of the pedestrian's head with ground. This thesis aims to numerically simulate vehicle to pedestrian crashes to develop knowledge that may suggest ways to improve safety above and beyond the regulatory tests. Inputs to the simulations include …

Linear Progression For Increased External Loads During Strength Training, Jacob A. Mota, Matt S. Stock, Kendra D. Olinghouse, Elias M. Carrillo, Ibrahim K. Munayer, Jocarol E. Shields, Micheal J. Luera, Brennan J. Thompson

Kinesiology and Health Science Faculty Publications

Improvements in muscular strength require an individual to train with progressively increased external loads over time. While it is well documented that the initial adaptations to strength training occur rapidly, previous researchers have not thoroughly examined the most effective means of inducing these changes. The purpose of this study was to examine the ability to add 2.27 kg to the barbell for 20 consecutive training sessions, and to compare these responses between the sexes. Thirty-four subjects ([mean ± SD age = 23 ± 3 years] men, n = 17; women, n = 17) participated in this study. The subjects were …

Leg Lean Mass Adaptations Following Short-Term Barbell Training In Women, Jacob A. Mota, Matt S. Stock, Kendra D. Olinghouse, Alexander S. Drusch, Brennan J. Thompson

Kinesiology and Health Science Faculty Publications

Participations in a resistance training program results in both neural adaptations and increases in lean body mass, the latter of which is considered a slow process. The majority of previous investigations that have examined the time course associated with muscular adaptations have utilized exercise machines or single-joint movements. Furthermore, the adaptations associated with resistance training in women are not as well understood as those for men. The purpose of this investigation was to examine the effects of a four week resistance training intervention on changes in leg lean mass in untrained, college-aged women. Thirty-five women (mean ± SD age = …

Relationships Between Anthropometric And Performance Variables In Youth: Predictors Of Lower-Body Vertical Jump Peak Power, Alexander S. Drusch, Elias M. Carrillo, Jacob Adam Mota, Kendra D. Olinghouse, Matt S. Stock, Marc R. Lochbaum, Brennan J. Thompson

Kinesiology and Health Science Faculty Publications

Anthropometric and physical performance measurements are commonly used for identifying specific physical traits in youth. Laboratory-based tests (e.g., linear velocity transducers), while accurate, provide practical limitations due to high costs and technical necessities. Thus, commonly used field tests may be useful alternatives for assessing fitness/performance characteristics of youth. The purpose of this study was to examine the relationships between anthropometric measures and lower-and upper-body power and strength measures; and to assess the predictive ability of these measures for lower-body vertical jump peak power (PP) output in youth. Thirty-nine pre-adolescent (mean±SD, range: age=7.8±1.7, 5-12 years) children volunteered to participate in this …

Comparison Of Two Different Sprint Interval Training Work-To-Rest Ratios On Acute Metabolic And Inflammatory Responses, Christopher R. Harnish

Theses and Dissertations

High intensity exercise is believed to yield greater results on health and human performance than moderate intensity exercise. Extensive research indicates that not only do high-intensity interval training (HIT) and sprint interval training (SIT) produce significant improvements in cardiovascular fitness and disease, they may be more effective at improving long-term metabolic function, including insulin sensitivity (Si), by producing more mitochondria. Moreover, compliance rates for HIT and SIT participation are reported to be the same or better than traditional moderate intensity exercise. Because lack of time is often cited as major hindrance to exercise participation, SIT is also seen as a …