Kinesiology Commons^™

Physiological And Biomechanical Differences Between Seated And Standing Uphill Cycling, Quint N. Berkemeier, Brent W. Alumbaugh, Trevor Gillum, Jared Coburn, Jong-Kyung Kim, Michael Reeder, Chelsie A. Fechtner, Gerald A. Smith

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 996-1011, 2020. Despite differences in economy, cyclists climb in seated and standing positions. Prompted by gaps in research, we compared VO₂ and heart rate (HR) (Study 1), muscle activation (Study 2) and breathing and pedaling entrainment (Study 3). METHODS: Subjects rode their bicycles on a treadmill in seated and standing positions. In Study 1, VO₂ and HR of four male cyclists (21.3 ± 1.7 yrs; 69.1 ± 6 ml/kg/min) were collected, alternating positions every 5 minutes for 20 minutes (8 mph, 8% grade). In Study 2, muscle activations of eight male cyclists …

Effects Of Combined Power Band Resistance Training On Sprint Speed, Agility, Vertical Jump Height And Strength In Collegiate Soccer Players, Edgar T. Katushabe, Mark Kramer

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 950-963, 2020. Soccer involves explosive physical actions requiring strength, power, and agility for optimal performance. Such attributes may be trained several ways, of which power-band resistance training has received limited attention regarding the potential for performance improvement in soccer players. This study serves to determine the effect of power-band resistance training on 1-repetition maximal (1RM) strength, speed, standing vertical jump (SVJ) height, and agility of collegiate soccer players. Seventeen male players (age: 20.47 ± 1.85 years, height: 1.77 ± 0.08 m, mass: 70.49 ± 4.15 kg) were matched and randomly allocated into either a …

A Single Bout Of Foam Rolling Increases Flexibility Of The Hip Adductor Muscles Without Compromising Strength, Gavin Connolly, Roger L. Hammer, Joseph A. Powell, Paul L. O'Connor

International Journal of Exercise Science

International Journal of Exercise Science 13(7): 938-949, 2020. Foam rolling (FR) is a method of self-myofascial release (SMR) implemented to reduce tension in underlying soft tissue, leading to increased range of motion (ROM). The hip adductor muscles of the groin are commonly less flexible and often a site for soft tissue injuries. Limited research has been done to determine the most effective flexibility exercises to increase ROM in the groin muscles prior to exercise without comprising strength. The purpose was to determine the effect of an acute bout of FR on passive groin flexibility and strength. Randomized crossover study with …

Examining Grit Like Qualities In Nfl Qbs, John Beck, Mark Debeliso

International Journal of Exercise Science

International Journal of Exercise Science 13(5): 912-923, 2020. In order to excel in the National Football League (NFL) it would seem reasonable to assume an athlete has grit which consists of the constructs of consistency of interest and perseverance of effort. Grit-like qualities such as endurance, urgency and intensity, self-confidence, need for encouragement, and self-criticality may be of particular value for the athlete playing the Quarterback (QB) position. The purpose of the study was to assess the 5 grit-like constructs of endurance, urgency and intensity, self-confidence, need for encouragement, and self-criticality among NFL QBs. The Flippen Profile^TM assessment was …

Case Report Of A Remote Ischemic Preconditioning Intervention During Aerobic Exercise In A 44-Year-Old Amateur Triathlete Male With A History Of Acute Myocardial Infarction, Maxime Caru, François Lalonde, Hugo Gravel, Chantal Daigle, Daniel Curnier

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 924-937, 2020. Over the years, exercise has become increasingly important in patients with acute myocardial infarction (AMI). However, AMI patients need to be closely monitored since they maintain cardiovascular disease risks, such as ventricular repolarization abnormalities in electrocardiograms during exercise and rest. A recent study showed the need to focus on the different potential mechanisms and the applicability of remote ischemic preconditioning (RIPC) for cardiac patients engaged in exercise rehabilitation. This is the first case report that explores the effectiveness of an RIPC intervention in a 44-year-old amateur triathlete male with a history of …

The Effects Of Walking With A Load In The Heat On Physiological Responses Among Military Reserve Female Cadets, Nurul Atikah Shuhada, Marilyn L.Y. Ong, Chee Keong Chen

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 900-911, 2020. This study aimed to investigate the effects of walking in a hot and humid environment while wearing a combat suit with a load on physiological responses among the Malaysian Military Reserve Officer Training Unit (ROTU) female cadets. Eight healthy female ROTU cadets (age: 21.3 ± 1.0 years old; height: 156.3 ± 4.9 cm; weight: 55.6 ± 7.5 kg) participated in this randomised, crossover trial. They walked for 1 h on a treadmill at 3 km.h^-1 while carrying either 8.2 kg load (WL) or without load (WOL) in a room maintained at …

Donning A Novel Lower-Limb Restrictive Compression Garment During Training Augments Muscle Power And Strength, Jaxon T. Baum, Robert P. Carter, Eric V. Neufeld, Brett A. Dolezal

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 890-899, 2020. The popularity of graduated compression garments (GCG) in sport and exercise is largely driven by the abundance of anecdotal claims suggesting their efficacy. A new line of compression apparel, restrictive compression garments (RCG), integrate novel resistance technology into lower-limb compression garments designed to provide variable resistance to movement. This study aimed to investigate the effect of donning an RCG during a 4-week training program on selected performance variables. Twelve college-aged males were recruited for four weeks of lower-body strength-power resistance training. Participants were randomized 1:1 and blinded to (i) an intervention group …

Effects Of Horizontal And Incline Bench Press On Neuromuscular Adaptations In Untrained Young Men, Suene F. N. Chaves, Valdinar A. Rocha-Júnior, Irismar G. A. Encarnação, Hugo C. Martins-Costa, Eduardo D. S. Freitas, Daniel B. Coelho, Frederico S. C. Franco, Jeremy P. Loenneke, Martim Bottaro, João B. Ferreira-Júnior

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 859-872, 2020. The aim of the current study was to investigate the effects of horizontal and incline bench press as well as the combination of both exercises on neuromuscular adaptation in untrained young men. Forty-seven untrained men were randomly assigned to one of the three groups: 1) a horizontal bench press group (n= 15), 2) an incline bench press group (n= 15), and 3) a combination (horizontal + incline) group (n= 17). Training was conducted once a week for eight weeks, with equalized number of sets among groups. Muscle thickness, isometric strength and electromyography …

The Influence Of Sport-Related Concussion On Lower Extremity Injury Risk: A Review Of Current Return-To-Play Practices And Clinical Implications, Jason M. Avedesian, Tracey Covassin, Janet S. Dufek

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 873-889, 2020. Sport-related concussions (SRCs) are now classified as a major health concern affecting athletes across all sporting levels, with recent evidence suggesting upwards of 3.8 million SRCs occur each year. Multiple injury surveillance datasets have recently determined that athletes post-SRC, compared to non-concussed counterparts, are at greater risk for lower extremity (LE) injury beyond the resolution of traditional SRC assessment batteries. However, it is presently uncertain if common clinical practices (symptom reporting, neuropsychological (NP) examination, and static postural control analysis) can determine athletes at risk for LE injury following an SRC. A comprehensive …

The Effect Of Timing And Type Of Exercise On The Quality Of Sleep In Trained Individuals, Victoria Burgess, Jose Antonio, Helen Bland, Ronald Wagner, Jaime Tartar, Bridget Melton

International Journal of Exercise Science

International Journal of Exercise Science 13(7): 837-858, 2020. Sleep is an extremely important component for overall health and for a well-balanced training program. Recent studies have highlighted the interaction between sleep, recovery, and performance in elite and recreational athletes alike. Exercise has been known to affect the quality of sleep, nevertheless the impact is not well understood in the current research, particularly the effects of exercise timing and intensity on sleep quality. The purpose of this study was to understand if exercise timing and intensity significantly impact sleep quality among recreational exercisers. The participants involved were recreational exercisers who were …

Impact Of Hydration Status On Jump Performance In Recreationally Trained Males, Paul T. Donahue, Samuel Wilson, Charles Williams, Christopher M. Hill, Melinda Valiant, John Garner

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 826-836, 2020. The vertical jump is commonly used as a means of evaluating athlete readiness. Athletes have been shown to arrive to training and competition in a hypohydrated state. Thus, this investigation sought to examine the impact of hydration status on both countermovement (CMJ) and squat jump (SJ) performance. Twenty-five recreationally trained males completed three CMJ and SJ in a euhydrated, hypohydrated and control condition. Conditions were separated by a minimum of 24 hours. Hydration status was assessed using urine specific gravity. Jump performance was evaluated using both kinematic and kinetic data obtained from …

An Investigation Of Stress-Related Factors And Injury Occurrence In Division Iii Ice Hockey Athletes 2020., Christian Kiesel

Master's Theses

Many variables can factor into a student athlete sustaining an injury, but one of the most interesting is stress. The Stress and Injury Model is excellent in explaining how exactly history of stressors, personality, and coping mechanisms play a pivotal role in the stress response. If these three factors cause a negative stress response, then that will lead to an athlete becoming more likely to become injured. This study used 40 ice hockey players from a Division III NCAA institution. Each participant completed the Inventory of College Students’ Recent Life Experiences (ICSRLE) and Pittsburgh Sleep Quality Index (PSQI) every month …

Evaluation Of Repetitive Jumping Intensity On The Digi-Jump Machine, T. Scott Lyons, James W. Navalta, Whitley J. Stone, Scott W. Arnett, Mark A. Schafer, Laura Igaune

International Journal of Exercise Science

Cardiorespiratory endurance is an important element of aerobic fitness, particularly in weight management and reducing risk for cardiovascular disease. While there are numerous options for aerobic exercise, rope jumping is often overlooked. In addition to regular exercise and a healthy diet, the American Heart Association strongly recommends rope jumping. The first purpose of this study was to determine the steady state metabolic cost of repetitive jumping on the Digi-Jump machine to evaluate whether exercise on this device is more or less strenuous than similar exercise with a jump rope, as demonstrated in previous literature. A second purpose was to determine …

Cardiovascular And Stride Frequency Differences During Land And Aquatic Treadmill Walking, Jessica Burton, Sarah Duffey, Amber Hammonds, Anna Leduc, Rachel Shumate, John Coons, Ryan T. Conners

International Journal of Aquatic Research and Education

This study examined heart rate (HR) and stride frequency (SF) values of 30 college-aged males and females during dry-land (DL) and aquatic walking (AW). Aquatic walking trials were completed in an underwater treadmill with the water depth at waist level; the water temperature (31℃ ± 0.1℃) and room temperature (26.6℃ ± 0.1℃) were maintained at thermoneutral levels throughout the study. During each walking condition, HR and SF were recorded at treadmill speeds of 1 mph, 2 mph, and 3 mph. Participants were instructed to walk with their hands at their sides swinging as they would when walking on dry-land unless …

Features Of Acceleration And Angular Velocity Using Thigh Imus During Walking In Water, Koichi Kaneda, Yuji Ohgi, Mark Mckean, Brendan Burkett

International Journal of Aquatic Research and Education

Ten participants were assessed while walking in water and on land with wearable inertial measurement units (IMUs) attached to the right thigh. Longitudinal acceleration, anterior-posterior acceleration, and frontal axis angular velocity were measured at 100 Hz, matched with video analysis sampled at 25 Hz during the walking trials. The longitudinal acceleration showed almost 1 g from initial heel contact to 70% of one cycle, and the anterior-posterior acceleration showed a sinusoidal pattern, synchronizing the approximate posture of the thigh in water. The frontal axis angular velocity fluctuated less while walking in water compared with on land, because thigh motion speed …

Kids Don’T Float…And Their Parents Don’T Either: Using A Family-Centered Approach In Alaska’S Kids Don’T Float Program, Michelle E. E. Bauer, Audrey R. Giles, Justina Marianayagam, Kelli M. Toth

International Journal of Aquatic Research and Education

The goal of this experiential report is to outline the adoption of a family-centered Kids Don’t Float approach. We conducted a critical synthesis of information to reflect the expansion of the Kids Don’t Float program into a more family-centered approach. The critical synthesis provided insights into why we should adopt this approach, how it was implemented, and how it influenced drowning incidents compared to the previously used child-centered approach. The adoption of a family-centered approach may contribute to reducing drowning incidents by targeting parents, providing safety information to families, and promoting parental modelling of life jackets. Program evaluators and water …

Motor Behavior Literature Fails To Translate: A Preliminary Investigation Into Coaching And Focus Of Attention In Recreational Distance Runners., Masahiro Yamada, Jed Diekfuss, Louisa Raisbeck

International Journal of Exercise Science

International Journal of Exercise Science 13(5): 789-801, 2020. The benefits of using an external focus relative to an internal focus for endurance activities are well documented. However, literature has revealed that internally focused instructions are predominantly adopted in the field, and existing data are limited to highly-skilled level populations. Moreover, athletes’ focus of attention during fatigue invoking activities is unknown. The purpose of the current study was to examine what type of feedback and instructions experienced recreational individuals receive and their self-adopted focus of attention when fatigued. Distance runners answered a questionnaire related to instruction and feedback from coaches and …

Internal Training Load Measures During A Competitive Season In Collegiate Women Lacrosse Athletes, Jennifer Fields, Michael Esco, Justin Merrigan, Jason White, Margaret T. Jones

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 778-788, 2020. Monitoring internal load provides useful and non-invasive markers of training stress and adaptation. However, the relationship between internal load measures across a competitive window remains inconclusive and limited. The purpose of this study was to report various internal load measures, as well as their relationship, across a season in Division I women lacrosse athletes (n = 20). Ultra-short natural logarithm of the root mean square of successive differences (lnRMSSD), salivary testosterone, cortisol, the testosterone:cortisol ratio, and self-reported measures of fatigue and recovery were collected weekly for 13 weeks. Means ± SD …

Acute Physiologic Effects Of Performing Yoga In The Heat On Energy Expenditure, Range Of Motion, And Inflammatory Biomarkers, Bradley Lambert, Katherine Miller, Domenica Delgado, Kalyan Chaliki, Joshua Lee, Guillermo Bauza, Francesca Taraballi, David Dong, Ennio Tasciotti, Joshua Harris, Patrick Mcculloch

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 802-817, 2020. Performing yoga in a heated environment (HY) is a popular exercise mode purported to improve range of motion (ROM), body composition, and aerobic fitness. The purpose of this investigation was to compare a session of HY to room temperature yoga (RTY) with regards to ROM, oxygen consumption, caloric expenditure, and biomarkers of acute stress and inflammation. Sixteen experienced yoga practitioners (F14, M2; 40 ± 11yr; 22.6 ± 1.8 kg/m²) completed a 1-hour standardized Bikram sequence in HY (105⁰F, 40⁰C) and RTY (74⁰F, 23.3⁰C) conditions (order of conditions randomized, humidity standardized …

Swimming Pool Environment And Respiratory Health Issues Experienced By Masters Swimmers: Results From A Literature Review And Survey Of United States Masters Swimming Clubs, Jody C. Gan, Julia Snegg, William Harder

International Journal of Aquatic Research and Education

After three members of a Masters adult swim club died of lung cancer, both a literature review and survey were conducted with representatives from 746 United States Masters Swimming clubs to explore a possible relationship between swimming and cancers of the respiratory tract. Six other clubs reported known cancers of the respiratory tract among club members, but none of the other 740 clubs reported a similar cluster of lung cancer. More clubs reported cases of chronic respiratory infections and widespread complaints about air quality. While no studies exploring a relationship between swimming and lung cancer could be found in the …

Swimming Past The Pandemic: Importance Of Evidence-Based Science, Stephen J. Langendorfer Ph.D.

International Journal of Aquatic Research and Education

Swimming Past the Pandemic - URL included

Preparation For An Half-Ironmantm Triathlon Amongst Amateur Athlete: Finishing Rate And Physiological Adaptation., Francois Lalonde, Sarah-Maude Martin, Vincent Gosselin Boucher, Marc Gosselin, Mélanie Roch, Alain Steve Comtois

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 766-777, 2020. Long distance triathlon has gained in popularity amongst the general population. Coaches establish training programs based upon their knowledge, personal experience and on current training principles. The goal was to observe the effect of a triathlon training program for a half Ironman event in neophyte amateur athletes. A specific triathlon training program was followed from February to June 2016 by a group preparing for their first half ironman. Out of the 32 participants (19 Males and 13 Females; mean age of 39 ± 9.9 years old; body weight of 72.7 ± 13.4 …

Acute Capsaicin Analog Supplementation Improves 400 M And 3000 M Running Time-Trial Performance, Lasaro Albuquerque Costa, Marcelo Conrado De Freitas, Jason Cholewa, Fabio Nakamura, Valeria Panissa, Vilton Emanoel Lopes De Moura E Silva Vilton Emanoel Lopes De Moura E Silva, Alcione Maria B Sá, Priscila A. Queiroz, Sergio Luis Galan, Marcos Antonio P Santos, Nelo E. Zanchi, Fabio Santos Lira, Fabricio Eduardo Rossi

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 755-765, 2020. Objectives: Performance in running-based sport depends on the ability to perform repetitive high intensity muscle contractions. Previous studies have shown that capsaicin analog (CAP) (i.e. Capsiate) supplementation may improve this performance. The purpose of this study was to investigate the acute effect of CAP supplementation on short (400 m) and middle distance (3000 m) running time-trial performance, maximum heart rate (HR), and rate of perceived exertion (RPE). Methods: Twelve physically active men completed four randomized, double-blind trials: CAP condition (12 mg) or a placebo condition. Forty-five minutes after supplementation, the participants performed …

Staff Training In Aquatics For Individuals With Disabilities: The Quest, Susan J. Grosse

International Journal of Aquatic Research and Education

Trained instructors in general programs have the ability and resources to initiate and follow through with developing water safe individuals who are capable swimmers. Specific staff training to prepare individuals to facilitate aquatic participation for individuals with disabilities is currently extremely limited. The purpose of this article is to examine the barriers to specialized staff training in aquatics for individuals with disabilities, to suggest necessary staff training content, and to propose topics for further research in the area of staff training. Seeking development of quality staff training programs for those working in aquatics for individuals with disabilities is the quest.

Muscle Oxygen Demands Of The Vastus Lateralis In Back And Front Squats, Patrick R. Davis, John P. Yakel, Devin J.F. Anderson

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 734-743, 2020. In resistance training squats are often used to strengthen the muscles of the lower extremities and core muscles. There are two common forms of squats that use a barbell for loading, the back squat and the front squat. The technique and loading of each squat differ markedly. However, the energetic demands on the muscle between the two forms are not well understood. The purpose of this study was to investigate the difference in energy demands between front and back squats by measuring the change in skeletal muscle oxygen saturation (SmO₂) …

Muscle Sentry® Has No Effect On Total Work Performed And Estimated Mvo2 After High Intensity Short Duration Resistance Training, Junhai Xu, Tyler M. Farney, Arnold G. Nelson

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 744-754, 2020. Supplements are widely used in recreational and professional participants; however, their claimed benefits are hardly to test. This study compared the total lifted numbers and post-exercise estimated MVO₂ while subjects were treated with either Muscle Sentry® (MS) or placebo (PL), in a 7-day washout period. Participants (11 women, 10 men, 20-24 years) performed 3 sets to failure chest and leg press exercises at 8 RM with 2 min rest between sets. Each exercise was performed four times (2 × MS, 2 × PL) at the same time of the day separated …

Efficacy Of An Audio-Based Biofeedback Intervention To Modify Running Gait In Female Runners 2020, Sarah Rothstein

Master's Theses

Introduction: Gait retraining interventions are used to modify foot strike parameters associated with musculoskeletal injuries. Such interventions may prove beneficial if gait modifications are maintained long-term and provide a physiological performance benefit. Purpose: The primary purpose of this study was to determine whether female recreational runners can use a smartphone decibel app to self-modify gait mechanics associated with injury. The secondary purpose was to determine if such gait modifications are retained beyond the initial training session. The tertiary purpose was to determine if such gait modifications were associated with improved running economy. Methods: The peak vertical ground reaction force (vGRF), …

The Effect Of Attentional Focus Instructions On Single Leg Balance Performance 2020., Cory Monahan

Master's Theses

Balance and postural control exercises are often a part of exercise programs. During exercise programs, movement practitioners can provide instructions to facilitate performance and learning. Instructions can be used to direct attentional focus, which has been found to affect the performance and learning of motor skills, including balance and postural control tasks. However, no known studies to date have investigated the effect of both internal and external attentional focus instructions on static single leg balance performance. The purpose of this study was to investigate the effect of attentional focus instructions on static single leg balance performance as reflected by the …

Bilateral Muscle Oxygenation Kinetics In Response To Repeat Sprint Cycling In Strong And Weak Individuals, John Abbott

Electronic Theses and Dissertations

Repeat sprint ability has been investigated thoroughly, however optimal training methodology to improve RSA remains elusive. Both kinetic and physiological viewpoints have been used to scrutinize aspects of RSA including, initial sprint performance (anaerobic power), maximal cardiorespiratory fitness (VO2max), lactate threshold, anaerobic capacity (mean power), muscle activation (EMG), and local muscle oxygenation kinetics. To our knowledge no study has utilized maximal strength levels as a separate factor among a homogenous group of cardiorespiratory fitness individuals (as determined by peak VO2 during RSA). The purpose of this study was to better understand the relationship between maximal strength, muscular characteristics, and cycling …

Preliminary Study: Leucine Supplementation Exacerbates Muscle Wasting Independent Of The Ubiquitin-Proteasome System, Katarina Bejarano

Graduate Theses and Dissertations

Cancer cachexia is the rapid, drastic loss of muscle mass associated with cancer and is not reversible by conventional nutritional means (Brown et al., 2018; Brown et al., 2017). It occurs in ~80% of cancer patients and is responsible for 20-40% of cancer-related deaths (Brown et al., 2018; Brown et al., 2017). This condition leaves patients with fatigue, functional impairment, reduced quality of life, and a decrease in survival rates. Cachexia occurs through an imbalance between protein degradation and protein synthesis (Brown et al., 2018), which is associated with inflammation and altered metabolic processes.

Several studies have investigated the effects …