Kinesiology Commons^™

Effect Of Jump Direction And External Load On Single-Legged Jump-Landing Biomechanics, Alexander J. Hron, Colin W. Bond, Benjamin C. Noonan

International Journal of Exercise Science

International Journal of Exercise Science 13(1): 234-248, 2020. External load may increase an individual’s risk of non-contact anterior cruciate ligament (ACL) injury during single-legged jump-landing (SLJL).This study evaluated the effects of jump direction and external load on hip and knee joint motion and time to stabilization (TTS) during SLJL. Seventeen active males (n = 8) and females (22.2 ± 3.0 y, 1.75 ± 0.08 m, 73.4 ± 12.0 kg) participated in this randomized, crossover designed study. Single-legged jump-landings performed in two conditions, including without external load (BW) and with a torso-worn weight vest equal to 10% of the participant’s …

Developing A Fanbase In Niche Sport Markets: An Examination Of Nhl Fandom And Social Sustainability In The Sunbelt, Brandon Mastromartino, Tyreal Y. Qian, Jerred J. Wang, James J. Zhang

Faculty Publications

In the modern day sport marketplace, professional sport teams face tough competition to build and sustain a viable fan base. This study sought to address three research questions: (a) what are the factors that contribute to the socialization of sports fans in niche sport markets? (b) How do team-led and fan-led initiatives work to socialize fans? Finally, (c) to what extent do the socialization factors affect identify as a sports fan for a niche sport and overall fan consumption behavior? A questionnaire was administered to 535 NHL fans and data were analyzed through conducting an Exploratory Factor Analysis, Exploratory Factor …

Swaying To The Complex Motion Of A Visual Target Affects Postural Sway Variability, Haralampos Sotirakis, Dimitrios A. Patikas, Nicholas Stergiou, Vassilia Hatzitaki

Journal Articles

Background

Voluntary shifting body weight in the anteroposterior direction is an important element of daily life activities, such as rising from a chair or initiating a step. In order to accommodate the daily-life challenges of such tasks, voluntary postural sway needs to be flexible and variable.

Research question

In this study we asked how whole-body tracking of a complex visual target motion with the concurrent provision of feedback modulates the variability of voluntary sway.

Methods

Twenty young adults (age: 27.10 ± 9.15years, height: 170.73 ± 9.40 cm, mass: 62.84 ± 11.48 kg) performed 132 cycles of voluntary antero-posterior sway, on …

Comparison Of Upper Extremity Function In Women With And Women Without A History Of Breast Cancer, Mary Insana Fisher, Gilson Capilouto, Terry Malone, Heather Bush, Timothy L. Uhl

Physical Therapy Faculty Publications

Design: This was an observational cross-sectional study.

Methods: Women who were diagnosed with breast cancer and had a mean post–surgical treatment time of 51 months (range = 12–336 months) were compared with women who did not have breast cancer (CTRL group). Self-reported upper extremity function using the Disabilities of the Arm, Shoulder and Hand (DASH) questionnaire and shoulder range of motion, strength, and muscular endurance were measured. Participants were divided into 3 groups: breast cancer involving the nondominant limb (BC-ND), breast cancer involving the dominant limb (BC-DOM), and CTRL.

Results: A total of 59 women in the CTRL group, 23 …

Cancer Rehabilitation Publications (2008–2018) With A Focus On Physical Function: A Scoping Review, Shana Harrington, Nicole L. Stout, Elizabeth Hile, Mary Insana Fisher, Melissa Eden, Victoria Marchese, Lucinda Pfalzer

Physical Therapy Faculty Publications

Background: Cancer rehabilitation research has accelerated over the last decade. However, closer examination of the published literature reveals that the majority of this work has focused on psychological interventions and cognitive and behavioral therapies. Recent initiatives have aggregated expert consensus around research priorities, highlighting a dearth in research regarding measurement of and interventions for physical function. Increasingly loud calls for the need to address the myriad of physical functional impairments that develop in people living with and beyond cancer have been published in the literature. A detailed survey of the landscape of published research has not been reported to our …

Practitioner Perceptions Regarding The Practices Of Soccer Substitutes, Samuel P. Hills, Jon N. Radcliffe, Martin J. Barwood, Shawn M. Arent Ph.D., Cscs*D, Fissn, Facsm, Fnak, Carlton B. Cooke, Mark Russell

Faculty Publications

Despite empirical observations suggesting that practitioners value the use of substitutions during soccer match-play, limited research has sought to substantiate such claims. This study used online surveys to assess the perceptions of practitioners within professional soccer about the use and practices of substitutes. Thirty-three practitioners completed one of two surveys (each requiring both open and closed questions to be answered), depending upon whether their primary role related mostly to tactical (‘tactical practitioners’; n = 7) or physical (‘physical practitioners’; n = 26) aspects of player/team management. Thematic content analysis of responses identified four higher-order themes: ‘impact of substitutions’, ‘planning and …

Limb Occlusion Pressure: A Method To Assess Changes In Systolic Blood Pressure, Zachary W. Bell, Matthew B. Jessee, Kevin T. Mattocks, Samuel L. Buckner, Scott J. Dankel, J. Grant Mouser, Takashi Abe, Jeremy P. Loenneke

Faculty Scholarship

Although often used as a surrogate, comparisons between traditional blood pressure measurements and limb occlusion assessed via hand-held Doppler have yet to be completed. Using limb occlusion pressure as a method of assessing systolic pressure is of interest to those studying the acute effects of blood flow restriction, where the removal of the cuff may alter the physiological response. Purpose: We sought to determine how changes in limb occlusion pressure track with changes in traditional assessments of blood pressure. Basic Procedures: Limb occlusion pressure measured by hand-held Doppler and blood pressure measured by an automatic blood pressure cuff were assessed …

Development And Validation Of The Maternal Distraction Questionnaire, Alison K. Ventura, Megan Hupp, Shawnee Alvarez Gutierrez, Rebeca Almeida

Kinesiology and Public Health

This paper describes the development of a self-report measure of mothers’ engagement in technological activities during mother-infant interactions. In Study 1, mothers (n = 332; infants: 3.8 ± 1.4 months) completed the Maternal Distraction Questionnaire (MDQ) and related questionnaires. Factor analysis revealed two distinct subscales representing engagement with technological distractors and perceived distraction. Subscales correlated with relevant measures of feeding styles, attachment, and infant eating behaviors and temperament. In Study 2, mothers (n = 24; infants: 3.8 ± 1.8 months) completed the MDQ and kept feeding activity diaries. Significant correlations between MDQ subscales and diary data were noted. …

The Effect Of Static Stretching On Proprioception, Pennation Angle, And Muscle Power Production, Lacey G. Dennis, Eva Alyss Blais, Kolyse E. Wagstaff, Li Li, Duke Biber

Health Sciences & Kinesiology: Faculty Publications

With widespread use of pre-exercise stretching methods across sport and exercise, recent studies have questioned the effectiveness of such methods (Kay & Blazevich 2012; Cramer et al., 2005; Curry, Chengkalath, Crouch, Romance, & Manns, 2009). The purpose of this study was to examine how the relationship between pennation angle, proprioception, and muscle power are influenced by a static stretching protocol. Participants (n = 17) from a southeastern university in the United States consented to participate and were divided into an experimental group (n = 12) and control group (n = 5). The experimental group engaged in static stretched by placing …

Injury Surveillance During Competitive Functional Fitness Racing Events, Sean Williams, Joanne Hitchcock, Lewis Davies, Christopher Barnes, Steven Williams, Amy Williams

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 197-205, 2020. High-intensity functional training (HIFT) is an exercise training modality that has grown considerably in popularity over the last decade. More recently, competitive functional fitness racing events have emerged from HIFT, and aim to test athletes’ proficiency across a variety of movements, skills, and energy systems. Whilst the injury risk associated with HIFT has been shown to be low and comparable to other forms of recreational fitness activities, the injury risk associated with competitive functional fitness racing events is currently unknown. A prospective cohort design was used to record medical-attention injuries during two …

Contrast Training Generates Post-Activation Potentiation And Improves Repeated Sprint Ability In Elite Ice Hockey Players, Sébastien Lagrange, Pierre-Marc Ferland, Mario Leone, Alain-Steve Comtois

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 183-196, 2020. The purpose of this study was to measure the generating effects of Contrast Training (CT) on 6-hour post-activation potentiation (PAP) and its influence on jumping and on on-ice repeated sprint performance in ice hockey players. Forty-one participants were divided in two groups: experimental (EG) and control group (CG). The EG followed the CT PAP protocol which consisted of 5 sets of 5 half inertia back squat superset with 6 squat jumps. The effects of PAP were measured with the vertical countermovement jump (CMJ), stationary broad jump (BJ) and 9 repeated on ice …

Young Adults Performance Of Unipedal Dynamic Balance With Various Footwear Conditions, Barbara Smith, Alice Hartman, David Martin, Jeremy Milford, Jacob Simmonds, Chris Truong

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 206-215, 2020. Wearing barefoot-style (minimalist) shoes is suggested as a transition between wearing shoes and barefoot running. Some sources equate wearing Vibram FiveFingers™(VFFs), a brand of barefoot shoes, with running/walking barefoot. Static and dynamic balance exercises are recommended. Little information is available on the effects barefoot shoes may have on dynamic balance. This study’s purpose was to examine dynamic balance when participants wore VFFs, athletic shoes, or went barefoot (BF). To test dynamic balance, participants used a modified version of the Star Excursion Balance Test (SEBT), in which the reaching leg followed only three …

A Comparison Of Quadriceps-To-Hamstrings Ratios During Isokinetic Testing, Cutting, And Drop Landings In Male Soccer Players, Shane O'Donnell, Dana Eitan, Jenevieve L. Roper

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 157-166, 2020. Collegiate soccer is not an unusual place to suffer a knee injury. The sport has many dynamic movements, such as cutting, jumping and shooting. Many professionals use quadriceps-to-hamstring (Q/H) ratios as a tool to determine when an injured player can to return to game play or use the ratio to investigate how predisposed a certain player is to sustaining a knee injury. However, many of these ratios are taken in isokinetic testing in a controlled environment and to our knowledge it is unknown if these ratios are similar to those measured during …

Neither A Multi-Ingredient Pre-Workout Supplement Nor Caffeine Were Effective At Improving Markers Of Blood Flow Or Upper-Body Resistance Exercise Performance, Michael S. Blake, Nathaniel R. Johnson, Kara A. Trautman, James W. Grier, Sherri Stastny, Kyle Hackney

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 167-182, 2020. Few studies have measured the effects of multi-ingredient pre-workout supplements on blood flow or heart rate variability or have compared a multi-ingredient pre-workout supplement to a matched single ingredient. This study examined the effects of a multi-ingredient pre-workout supplement, an equivalent amount of caffeine, and placebo on markers of resistance training performance, blood flow, blood pressure, and heart rate variability. The study utilized a randomized, placebo-controlled, repeated-measures, crossover design. Twelve resistance-trained males (22.75 ± 4.51 yrs; 183.4 ± 7.37 cm; 91.05 ± 17.77 kg) completed the study. Resistance exercise performance was defined …

The Effects Of 3 Weeks Yogic Breathing Practice On Ventilation And Running Economy, Christie L. Seltmann, Lauren Killen, Matt Green, Eric O'Neal, Jonathan Swain, Christopher Frisbie

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 62-74, 2020. Yogic breathing techniques (Pranayama) positively impact respiratory function (RF) in non-endurance trained individuals.The purpose of this study investigated effects of routine Pranayama practice on RF, running economy (RE) and perceptual responses. A between subject’s case-control study design was incorporated.Eleven runners practiced three styles of Pranayama (30 min/day 6 days/week) for 3 consecutive weeks (YG) and completed a VO₂max tests on a treadmill (trial 1), basic RF tests, and constant workload RE trials at 60, 70, and 80% VO₂max (trial 2 and 3). A control …

Kine 4700 Ekg Interpretation And Stress Testing, Justin Swanson

Q2S Enhancing Pedagogy

The attached document is a draft of the syllabus for the KINE 4600 EKG Interpretation and Stress Testing class. As a group, we decided what the course learning outcomes will be along with the course outline. Required textbooks along with supplemental textbooks we also established. We decided what activities would be most conducive to enhance learning for the lab portion and how the lecture portion should proceed. We also established how the practical exams should be implemented and what procedures need to be taken in order for external subjects to participate in a stress test. The next steps to complete …

Acl Injury And Reconstruction Affect Control Of Ground Reaction Forces Produced During A Novel Task That Simulates Cutting Movements, Amelia Lanier, Brian Knarr, Nicholas Stergiou, Lynn Snyder-Mackler, Thomas S. Buchanan

Journal Articles

After anterior cruciate ligament (ACL) injury and reconstruction, biomechanical and neuromuscular control deficits persist and 25% of those who have experienced an ACL injury will experience a second ACL rupture in the first year after returning to sports. There remains a need for improved rehabilitation and the ability to detect an individual's risk of secondary ACL rupture. Nonlinear analysis metrics, such as the largest Lyapunov exponent (LyE) can provide new biomechanical insight in this population by identifying how movement patterns evolve over time. The purpose of this study was to determine how ACL injury, ACL reconstruction (ACLR), and participation in …

Changes In Health Behaviors And Outcomes Following Graduation From Higher Education, Oliver W A Wilson, Peter J. Matthews, Michele Duffey, Zack Papalia, Melissa Bopp

International Journal of Exercise Science

International Journal of Exercise Science 13(5): 131-139, 2020. The purpose of this study was to examine changes in health behaviors and outcomes of higher education (college) students following graduation. Undergraduate students (n= 206) enrolled at a large, northeastern United States university in general education health and wellness courses were assessed pre and post-graduation. Participants self-reported their demographics, physical activity behaviors, dietary behaviors, sleep, and stress pre and post-graduation via an online survey. Paired sample t-tests examined changes health behaviors pre and post-graduation. Following graduation, fruit and vegetable consumption increased significantly, moderate physical activity declined significantly, and both vigorous …

Whole-Body Vibration Training In Frail, Skilled Nursing Home Residents, Brandon Grubbs, Arturo Figueroa, Jeong-Su Kim, Robert Contreras, Karla Schmitt, Lynn Panton

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 140-156, 2020. Frailty is a geriatric syndrome characterized by diminished muscle strength, endurance, and weakened physical function. Physical frailty is often unaddressed clinically as it tends to manifest among chronic illnesses and sarcopenia, and consensus criteria for frailty diagnosis remains elusive. Whole-body vibration training (WBVT) has been used to improve deficits in lower body muscular strength and functional performance in healthy and high functioning older adults; therefore, the purpose of this study was to determine the effects of WBVT on physical frailty in skilled nursing home residents. This study compared the effects of 12 …

A Qualitative Study Of Breastfeeding And Formula-Feeding Mothers’ Perceptions Of And Experiences In Wic, Rebeca Almeida, Shawnee Alvarez Gutierrez, Shannon E. Whaley, Alison K. Ventura

Kinesiology and Public Health

Objective: To explore Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) participants’ perspectives about why formula-fed infants are less likely to be recertified at 1 year compared with breastfed infants.

Design: Four focus groups of WIC mothers, stratified by language spoken (English or Spanish) and feeding mode (breastfeeding [BF] or formula-feeding [FF]).

Setting: Two WIC sites within Los Angeles County, CA.

Participants: Mothers of 6- to 12-month-old infants (n = 31) in the WIC program.

Phenomenon of Interest: Mothers’ perceptions of (1) how WIC supports BF and FF mothers; and (2) experiences of FF mothers in WIC, with …