Females Who Have Undergone Acl Reconstruction Exhibit Altered Patellofemoral Joint Alignment And Reduced Contact: Implications For Early Onset Osteoarthritis,
2024
University of Southern California
Females Who Have Undergone Acl Reconstruction Exhibit Altered Patellofemoral Joint Alignment And Reduced Contact: Implications For Early Onset Osteoarthritis, Thomas Demirjian, Olivia Tu, Gillian Northrup, Christopher Powers
International Journal of Exercise Science: Conference Proceedings
Reconstruction is the gold standard treatment for those who have experienced a tear of the anterior cruciate ligament. Despite advancements in surgical technique and rehabilitation, a negative consequence of anterior ligament reconstruction (ACLr) is early onset osteoarthritis of the tibiofemoral joint and patellofemoral joint (PFJ). There is evidence that altered patella alignment may be contributory to early onset patellofemoral joint osteoarthritis. A negative consequence of patella malalignment is that contact between the patella and trochlea could be reduced, thereby exposing the joint to elevated stress (force per unit area). PURPOSE: The purpose of the current study was two-fold: 1) …
Three Years Of Football Play Maintains Nordbord Eccentric Hamstring Strength In Division I Athletes,
2024
Brigham Young University
Three Years Of Football Play Maintains Nordbord Eccentric Hamstring Strength In Division I Athletes, Josh Vandenakker, Malorie Wilwand, B. Brett Mortensen, A. Wayne Johnson
International Journal of Exercise Science: Conference Proceedings
In American football, the development of strength, power, speed, and conditioning is crucial throughout a season and college career to enhance athletes’ performance and prevent injury. Eccentric knee flexor strength is important for optimal athletic performance and injury risk reduction; therefore, assessment of eccentric hamstring strength (EHS) is critical. PURPOSE: To evaluate the EHS of a Division I football team and its change or continuity across multiple years. METHODS: This was a secondary analysis of HAMIR, 95 Division I football players (Age: 20.94 ± 2.11yrs; Ht: 1.88 ± 0.06m; Wt: 102.15 ± 17.94kg) had their EHS measured using the NordBord. …
Determining Model Fit For Eccentric Hamstrings Strength: A Bayesian Approach,
2024
Brigham Young University
Determining Model Fit For Eccentric Hamstrings Strength: A Bayesian Approach, Lee J Hinkle, James D. Mead, Carson Bates, Aaron W. Johnson
International Journal of Exercise Science: Conference Proceedings
The Bayesian paradigm holds that previous knowledge or expertise (“prior”) and data-driven measurements (“likelihoods”) can produce an outcome (“posterior”) which can, in turn, be used as the prior in a new iteration of analysis and learning. In a wider project, we are undertaking to measure hamstrings strength, physical activity level, and ultrasound (US) and MRI characteristics of more than 200 participants ages 18+. PURPOSE: Here we aim to develop a model that will predict eccentric hamstrings strength as measured by Nordbord based on variables available in both surveys (IPAQ) and US for use as a starting point for our …
Measuring Fatigue After Singles Pickleball Tournament Play,
2024
California State University, Monterey Bay
Measuring Fatigue After Singles Pickleball Tournament Play, Margaret J. Falknor, Steven Kim, James Annesi, George Beckham, Eric Martin
International Journal of Exercise Science: Conference Proceedings
Previously, we measured fatigue from one doubles pickleball match, multiple recreational doubles pickleball matches, and a nine-game doubles pickleball tournament. We found no evidence of neuromuscular fatigue in any of these scenarios. Therefore, doubles pickleball play may not be fatiguing enough to decrease jump performance. Singles pickleball matches may be more fatiguing than doubles play, because players must cover the court and return the ball without a partner. PURPOSE: Our goal was to determine if singles pickleball play would induce neuromuscular fatigue. METHODS: We included healthy adult pickleball players that had no lower body injuries within the past …
Downhill Dilemma: Analyzing Joint Force On Variable Speed And Gradient,
2024
Utah Valley University
Downhill Dilemma: Analyzing Joint Force On Variable Speed And Gradient, Ulises Hernandez, Ezrie Pace, Kaeley Loader, Nathan Ramirez, Megan Nielsen, Michael Bohne
International Journal of Exercise Science: Conference Proceedings
Movement on declined slopes poses unique mechanical stresses when compared to level surfaces. Both downhill (DH) running and walking have seen large amounts of load force absorption on the knee (French 2018; Abe et.al., 2011) with some forces possibly being distributed to the hip and ankle joints. Though research is limited about lower extremity joint kinematics across all three joints. PURPOSE: To better understand the joint forces placed on the hip, knee, and ankle with variable speed and decline gradient METHODS: Nine participants (5 male and 4 female; Age = 24.09 ± 2.81 yrs; Weight = 75.12 ± 13.67 kg; …
Influence Of Region Of Interest Size On Vastus Lateralis Shear Wave Velocity In Individuals With Anterior Cruciate Ligament Reconstruction,
2024
Brigham Young University
Influence Of Region Of Interest Size On Vastus Lateralis Shear Wave Velocity In Individuals With Anterior Cruciate Ligament Reconstruction, Jonathan L. Cardon, Brian W. Noehren, Mckenzie White
International Journal of Exercise Science: Conference Proceedings
PURPOSE: Shear wave elastography (SWE) is an emerging tool for estimating passive muscle stiffness via shear wave velocity (SWV). However, the lack of standardized collection and processing methods limits its clinical utility. One key factor in SWV analyses is the region of interest (ROI), which varies in size across the literature. Individuals post-anterior cruciate ligament reconstruction (ACLR) show changes in muscle quality, making it plausible that ROI size could influence SWE measurements in this population. METHODS: Twenty individuals post-ACLR participated (11M/9F, age = 19 ± 2 years, time since surgery = 5 ± 5 months, body mass index = …
Pain Education And Preparation Across Health Care Professions: A Scoping Review,
2024
The College of St. Scholastica
Pain Education And Preparation Across Health Care Professions: A Scoping Review, Rodiel Kirby Baloy Ii
International Journal of Exercise Science: Conference Proceedings
There is an ongoing evolution in the understanding of pain biology and its underlying mechanisms. Healthcare professional education and preparation must adapt to continue to provide effective management of individuals experiencing pain. PURPOSE: A review of current studies in pain education and preparation across healthcare professions was performed. This scoping review will be part of a larger study assessing the state of pain preparation in the field of physical therapy. METHODS: A scoping review of articles discussing pain education and preparation of healthcare professions, including dentistry (2), medicine (8), nursing (7), occupational safety and health (1), occupational and …
Baseline Characteristics Of Participants Enrolled In The Golf Recreational Exercise For Enhanced Prostate Cancer Survivorship Study,
2024
University of Southern California
Baseline Characteristics Of Participants Enrolled In The Golf Recreational Exercise For Enhanced Prostate Cancer Survivorship Study, Guanrong Cai, George Salem
International Journal of Exercise Science: Conference Proceedings
Prostate cancer survivors undergoing hormone therapy experience declines in physical function and quality of life. Exercise has been shown to be beneficial. Comparing baseline key health metrics to normative data can provide insight into the health status of prostate cancer survivors enrolled in a recreational exercise study. PURPOSE: The purpose is to descriptively compare participants’ baseline quality of life and physical function metrics with normative values. METHODS Five prostate cancer survivors (age: 76 yrs, SD=5.1) participated in the study. Baseline assessments included FACT-P (Functional Assessment of Cancer Therapy-Prostate) scores, 8ft Time-up-and-go (TUG) test times, grip strength, and gait speed. …
Use Of Caffeine In 19,660 U.S. Adults: The Role Of Overweight And Obesity,
2024
Brigham Young University
Use Of Caffeine In 19,660 U.S. Adults: The Role Of Overweight And Obesity, Frank Beltran, Larry A. Tucker
International Journal of Exercise Science: Conference Proceedings
Caffeine is one of the most consumed drugs in the United States. PURPOSE: The present cross-sectional investigation was conducted to determine the relationships between BMI and waist circumference, and caffeine intake. The specific objective was to determine whether those with higher BMIs or larger waists consume more caffeine than other adults. METHODS: A sample of 19,960 randomly selected women and men representing the U.S. adult population was studied. Data was collected as part of the National Health and Nutrition Examination Survey (NHANES) from 2009 through 2018. A number of covariates were controlled statistically to minimize their influence on …
Relationships Between Energy Availability, Dietary Restraint, And Body Image Concerns Among Olympic Weightlifters,
2024
California State University, Long Beach
Relationships Between Energy Availability, Dietary Restraint, And Body Image Concerns Among Olympic Weightlifters, Hannah Parducho, Michelle Barrack Phd, Rd, Cssd, Fascm, Joshua Cotter Phd, Facsm, Cscs, Nsca-Cpt, Eim, Virginia Gray Phd, Rd
International Journal of Exercise Science: Conference Proceedings
Athletes with low energy availability (LEA) may face reduced health and performance outcomes. Few studies have examined the energy availability (EA) of Olympic weightlifters and its relationships with nutrient adequacy, disordered eating, and body image. PURPOSE: To evaluate EA among weightlifters and to examine the relationship between LEA with dietary restraint and/or body image concerns. METHODS: Twenty-two female and 9 male adult competitive weightlifters (age 30.7 ± 9.0 years; weight 75.5 ± 16.6 kg; height 1.6 ± 0.1 m) completed an online survey. The Nutrition Screening Survey (NSS) assessed nutrient intake and EA. Athletes were classified as having …
The Effects Of Resisted Sprinting, Motor Imagery, Or A Dynamic Warm-Up Alone On Sprinting Performance In Recreationally Active Adults,
2024
Southern Utah University, Cedar City, UT
The Effects Of Resisted Sprinting, Motor Imagery, Or A Dynamic Warm-Up Alone On Sprinting Performance In Recreationally Active Adults, Kimberly Rogers, Suzanne L. Young, Marcus M. Lawrence
International Journal of Exercise Science: Conference Proceedings
Limited information exists on directly comparing active (e.g., involving physical movement/muscle contractions) or passive (e.g., no physical movement/muscle contractions) warm-ups to enhance sprint performance. PURPOSE: To determine the effects of an active dynamic warm-up with a resisted sprinting potentiating stimulus (DyWU+RS), a dynamic warm-up with motor imagery (DyWU+MI), or a dynamic warm-up alone (DyWU) on max velocity sprinting performance in recreational athletes. METHODS: 16 recreational adult athletes (n=8 female, n=8 male, aged 18-34 years old) randomly completed three warm-up conditions in the same session. Participants performed a standardized dynamic warm-up alone (DyWU), a DyWU followed by a resisted sprinting (10% …
Influence Of Social Identity And Industry Role On Implicit Biases In Fitness Professional,
2024
California State University, Long Beach
Influence Of Social Identity And Industry Role On Implicit Biases In Fitness Professional, Shayna J. Guerra, Katie Mcpherrin, Kellie Amanda Walters, Leilani Madrigal, Alison Ede, Amber Johnson
International Journal of Exercise Science: Conference Proceedings
Implicit biases are unconscious, internally held beliefs shaped by cultural norms, societal structures, and personal experiences and are often related to societal constructs such as race, gender, age, body shape, and ability. Although evidence has demonstrated that fitness professionals possess both explicit and implicit weight biases, biases based on age, gender, skin color, and ability level have not been studied. PURPOSE: The aim of this study is to explore the influence of social identity (e.g., age, skin-tone, weight, disability) and industry role on implicit biases in fitness professionals. METHODS: Participants (n=296) were randomly assigned two implicit association tests …
Pilot Study Of Neuromuscular Fatigue After Doubles Pickleball Tournament,
2024
Cal State Monterey Bay
Pilot Study Of Neuromuscular Fatigue After Doubles Pickleball Tournament, Matthew Ritchey, Margaret Falknor, George Beckham, Eric Martin
International Journal of Exercise Science: Conference Proceedings
The number of people playing pickleball has grown exponentially for several years in a row, and likewise, the absolute number of injuries due to pickleball have increased. Examining fatigue effects of playing may be a first step to determining injury prevention and game or tournament management strategies. However, in our previous work, we could not detect fatigue after playing multiple recreational games of doubles pickleball. PURPOSE: The purpose of this pilot study was to examine fatigue effects from playing a doubles pickleball tournament. METHODS: Five young men (ages 22-45) tested their force production, as measured by performing a …
Sex Differences In Cardiac Decompensation Under Moderate Hypovolemic Stress During Exercise,
2024
San Jose State University
Sex Differences In Cardiac Decompensation Under Moderate Hypovolemic Stress During Exercise, Yusuf I. Rizk, Daisy Hernandez Valadez, Jacob B. Sievers, Youanaa A. Gendy, Areum K. Jensen
International Journal of Exercise Science: Conference Proceedings
Due to higher metabolic demands to the contracting muscles there are significant increases in cardiac output (CO) and peripheral vascular adjustments, thus resulting in an increased arterial blood pressure (BP) during exercise. In general women have higher heart rate (HR), lower stroke volume (SV) and CO compared to men even though they change in a similar fashion during exercise. In response to central hypovolemia, triggered by lower body negative pressure (LBNP), women appeared to have lower tolerance compared to men. However, how women exhibit cardiac alterations to sustained LBNP and exercise differently is unclear. PURPOSE: To investigate sex differences in …
Does Lower Body Negative Pressure Have A Differential Effect On Blood Pressure And Blood Flow During Exercise In Women?,
2024
San Jose State University
Does Lower Body Negative Pressure Have A Differential Effect On Blood Pressure And Blood Flow During Exercise In Women?, Jacob B. Sievers, Youanaa A. Gendy, Yusuf I. Rizk, Daisy Hernandez Valadez, Areum K. Jensen
International Journal of Exercise Science: Conference Proceedings
In response to central hypovolemia, triggered by lower body negative pressure (LBNP), women appeared to have lower tolerance compared to men. In addition, women exhibit blunted pressor responses to exercise compared to men, while cardiac output is increased in a similar fashion. Nonetheless, redistribution of blood flow from central to contracting muscles is required to meet higher metabolic demands during exercise in both men and women. Thus, we thought to investigate the differential effect of LBNP during exercise in men and women. PURPOSE: To determine the role of LBNP on redistributing blood flow from central to contracting muscles during moderate …
Case Study: Can Quadriceps Muscle Growth Be Achieved In Aclr Patient With Neuromuscular Inhibition?,
2024
Brigham Young University
Case Study: Can Quadriceps Muscle Growth Be Achieved In Aclr Patient With Neuromuscular Inhibition?, Melody F. Anderson, Lee J Hinkle, Steven P. Allen, Aaron W. Johnson
International Journal of Exercise Science: Conference Proceedings
Despite extensive research of ACL reconstruction surgery (ACLR) and rehabilitation, mobility and functional issues often persist, leading to complications beyond the initial injury. This case study presents exercises employed to overcome negative consequences following ACLR. Participant (23yo, F, 163cm, 52kg) underwent ACLR in 2019 after a complete left ACL tear. After 7 months of PT following surgery, the participant was cleared to return to sport and continued consistent activity until 4 years post ACLR. At this time, the participant presented with knee pain, edema exacerbated by activity, 20% loss of range of motion (ROM), and extensive atrophy of the quadriceps …
Reduced Exertion High Intensity Interval Training (Rehit) On The Rowing Ergometer Elicits Lower Blood Lactate Accumulation And Higher Enjoyment And Affective Valence Versus Cycle Ergometry,
2024
California State University-- San Marcos
Reduced Exertion High Intensity Interval Training (Rehit) On The Rowing Ergometer Elicits Lower Blood Lactate Accumulation And Higher Enjoyment And Affective Valence Versus Cycle Ergometry, Todd Anthony Astorino Ph.D, Rasmus Dahl Clausen
International Journal of Exercise Science: Conference Proceedings
Reduced exertion high intensity interval training (REHIT) is an extremely time-efficient version of sprint interval training requiring two to three 20 s “all-out” sprints within a 10 min exercise session. Findings from laboratories in the UK (Metcalfe et al. 2012) and Canada (Gillen et al. 2016) show significant increases in VO2max, glycemic control, and body composition in inactive adults completing 6 - 12 wk of cycling based REHIT. A prior study (Astorino et al. 2020) in 85 adults having diverse VO2max values shows positive affective valence despite substantial blood lactate (BLa) accumulation. Whether REHIT can be …
Differences In Muscle Activation In Individuals With Bilateral And Unilateral Chronic Ankle Instability Ankle Instability,
2024
Brigham Young University
Differences In Muscle Activation In Individuals With Bilateral And Unilateral Chronic Ankle Instability Ankle Instability, Tanner Lee, Hyunwook Lee, Seunguk Han, Minsub Oh, Jon Tyson Hopkins
International Journal of Exercise Science: Conference Proceedings
Individuals with chronic ankle instability (CAI) have altered muscle activation. However, little is known about the differences in muscle activation of the lower extremity in individuals with bilateral and unilateral CAI. PURPOSE: To investigate differences in muscle activations during single-leg stance in individuals with bilateral and unilateral CAI. METHODS: Sixty participants were divided into 3 groups: 20 individuals with bilateral CAI (bilateral), 20 individuals with unilateral CAI (unilateral), and 20 healthy controls (control). Participants performed 3 trials of single-leg stance while muscle activations were recorded for 10 seconds. During the stance, participants stood with hands crossed on their …
Differences In Postural Control In Individuals With Bilateral And Unilateral Chronic Ankle Instability,
2024
Brigham Young University
Differences In Postural Control In Individuals With Bilateral And Unilateral Chronic Ankle Instability, Ethan Wood, Hyunwook Lee, Seunguk Han, Minsub Oh, Jon Tyson Hopkins
International Journal of Exercise Science: Conference Proceedings
Individuals with chronic ankle instability (CAI) have deficits in postural control and muscle activation. However, little is known about the differences in postural control in individuals with bilateral and unilateral CAI. PURPOSE: To compare postural control difference in individuals with bilateral and unilateral CAI. METHODS: Sixty participants were divided into three groups: 20 individuals with bilateral CAI (bilateral), 20 individuals with unilateral CAI (unilateral), and 20 healthy controls (control). Participants performed 3 trials of single-leg stance tasks for 10 seconds simultaneously. During the single-leg stances, participants were instructed to stand as still as possible on a force plate …
Effects Of Ankle Swelling On Dynamic Postural Control In Individuals With Chronic Ankle Instability,
2024
Brigham Young University
Effects Of Ankle Swelling On Dynamic Postural Control In Individuals With Chronic Ankle Instability, Isaiah K. Githuka, Hyunwook Lee, Seunguk Han, Minsub Oh, Jon Tyson Hopkins
International Journal of Exercise Science: Conference Proceedings
Chronic ankle instability (CAI) individuals have ankle swelling as a residual symptom. Joint swelling following musculoskeletal injuries inhibits full neural activation of muscles, known as arthrogenic muscle inhibition. However, little is known about the effects of ankle swelling on dynamic postural control in CAI individuals. PURPOSE: To investigate the effects of ankle swelling on dynamic postural control in CAI individuals. METHODS: A total of 45 participants were recruited from a university population: 15 CAI individuals with swelling (swelling), 15 CAI individuals without swelling (non-swelling), and 15 healthy controls (control). All participants were measured ankle swelling using a figure …
