Physiology Commons^™

Directing Attention Externally Produces Consistent Vertical Jump Assessment Results, Logan T. Markwell, Hubert Makaruk, Vanessa Frost-Piedrahita, Jared M. Porter

International Journal of Exercise Science

International Journal of Exercise Science 16(5): 448-457, 2023. Recent research has demonstrated that consistent external attentional focus instructions produce more reliable jumping measurements compared to non-consistent focus of attention instructions. While previous research has examined the effects of different external attentional focus instructions, less is known about different external focus of attention instruction effects during a vertical jump. Given that previous work has demonstrated that consistent external focus of attention instructions produced reliable jumping estimations, we hypothesized that using multiple methods to direct attention externally would produce consistent vertical jump results. Using a within-participant design, college aged students (n …

Reliability Of A Novel Automated Ultrasound Technology For Body Composition Assessment And Comparisons With Dual Energy X-Ray Absorptiometry, Adam Bradley, Lukus Klawitter, Emma Carver, Zach Johnson, Ryan Mcgrath, Sherri Stastny, Bryan Christensen, Kyle Hackney

International Journal of Exercise Science

International Journal of Exercise Science 16(4): 393-401, 2023. Body composition tools vary in reliability, portability, and accessibility. The purpose of this study was to evaluate test-retest reliability of MuscleSound® (MS) and dual-energy x-ray absorptiometry (DXA) for both two compartment (region) and three compartment (tissue) models. A secondary aim was to compare body composition values produced by both devices. Fifty participants (n = 25 male, n = 25 female) aged 18-39 years completed two body composition assessments, twice in a single session. Participants arrived at the lab after a 12-hour fast. DXA required participants to lay supine for 10-15 minutes …

Effects Of Different Percentages Of Blood Flow Restriction On Muscle Oxygen Saturation While Walking, Clayton Shriver, Yvette Figueroa, Jayson R. Gifford, Patrick Davis

International Journal of Exercise Science

International Journal of Exercise Science 16(2): 411-428, 2023. The purpose of this investigation was to determine the effect of different relative pressures of blood flow restriction (BFR) on muscle oxygen saturation (SmO₂) while walking at 3.0 mph (4.83 kph). Fifteen physically active healthy adults performed seven 5-minute stages of walking at 3.0 mph with a blood flow restriction cuff applied to the proximal portion of the left or right leg while bilateral SmO₂ changes were measured using near infra-red spectroscopy (NIRS) on the medial head of the gastrocnemius (GM) and vastus lateralis (VL) muscles. Other measurements including …

Arch Stiffness Does Not Determine Running Economy In Recreational Runners, Ian Bradford, Padraig Kirkwood, Jared Eddy, Phillip Essenmacher, Jean L. Mccrory, Brian K. Leary

International Journal of Exercise Science

International Journal of Exercise Science 16(2): 402-410, 2023. The primary purpose of this study was to determine the relationship between foot length, arch stiffness, and running economy in recreational runner at low running velocities. Sixteen trained endurance (age 20.5 ± 0.4 yrs, height 172 ± 1.8 cm, and mass 68.53 ± 2.40 kg) athletes had their foot anthropometrics and running economy measured. Foot anthropometrics including Foot Length (FL), Arch Stiffness Index (ASI), and Achilles Tendon Moment Arm Length (ATML) were assessed. Subjects then completed a maximal oxygen consumption (VO_2max) test and running economy (RE) assessment. RE was measured …

Training Status Impacts Metabolic Response To A High-Protein Weight Loss Diet In Recreationally Resistance-Trained Females., Alyssa A. Olenick, Regis C. Pearson, Nathan T. Jenkins

International Journal of Exercise Science

International Journal of Exercise Science 16(2): 377-392, 2023. This study investigated the effects of a novel high-protein diet template on postprandial metabolism and body composition (e.g., waist and hip circumference, body fat (%), fat mass, fat-free mass) in recreationally resistance-trained females. Fifteen females adhered to an eight-week high-protein dietary intervention (~1.5-1.6 g·kg^-1·day^-1) administered via template format. Pre- and post-intervention visits included anthropometrics, measurement of body composition, and an acute high-fat meal challenge. The high-fat meal challenge (61% fat) consisted of fasting postprandial blood glucose, resting metabolic rate (RMR), fat and carbohydrate oxidation assessed at 60-, 120-, …

Anthropometric Predictors Of Conventional Deadlift Kinematics And Kinetics: A Preliminary Study, Dale S. Keith, Daniel Scherrer, Brandon Nunley, Jake R. Boykin, Jacob J. Green, Madelin R. Siedler, Christian Rodriguez, Patrick S. Harty, Matthew T. Stratton, John R. Harry, Grant M. Tinsley

International Journal of Exercise Science

International Journal of Exercise Science 16(1): 429-447, 2023. The purpose of this preliminary analysis was to determine if there are relationships between anthropometric characteristics (arm length, torso length, thigh length, and shank length) and conventional deadlift (CDL) kinematics and kinetics during a 5 sets of 5 repetitions (5 x 5) CDL routine in resistance-trained males. Eleven males who had experience with the deadlift exercise were included in this analysis (age: 21.5 ± 1.4 y; height: 180.7 ± 5.7 cm; body mass: 89.9 ± 16.0 kg). Anthropometrics were measured by a 3-dimensional optical scanner. The participants underwent a 5 x 5 …

Impaired Hydrogen Sulfide Protein Expression In Patients With Peripheral Artery Disease, Dong Gun Jin, Kollyn B. Jallen, Liz Pekas, Song-Young Park

UNO Student Research and Creative Activity Fair

INTRODUCTION: Hydrogen sulfide (H₂S) is a gaseous signaling molecule that serves various roles in the vasculature, such as upregulating angiogenesis, vascular smooth muscle relaxation, protecting endothelial function, and regulating redox balance. Despite H₂S’s positive impacts on vascular homeostasis, it is important to note that its actions depend on its concentrations. At high concentrations, H₂S has been reported to increase oxidative stress damage, such as oxidation of cysteine residues and lipid peroxidation. This may indicate that H₂S may act as a ‘double-edged sword’ in the field of vascular physiology. Peripheral artery disease (PAD) …

In Vivo Potentiation Of Muscle Torque Is Enhanced In Female Mice Through Estradiol-Estrogen Receptor Signaling, Gengyun Le, Cory W. Baumann, Dawn A. Lowe, Gordon L. Warren

Biology Faculty Publications

Estradiol affects several properties of skeletal muscle in females including strength. Here, we developed an approach to measure in vivo posttetanic twitch potentiation (PTP) of the anterior crural muscles of anesthetized mice and tested the hypothesis that 17b-estradiol (E2) enhances PTP through estrogen receptor (ER) signaling. Peak torques of potentiated twitches were 40%–60% greater than those of unpotentiated twitches and such PTP was greater in ovary-intact mice, or ovariectomized (Ovx) mice treated with E2, compared with Ovx mice (P < 0.047). PTP did not differ between mice with and without ERa ablated in skeletal muscle fibers (P = 0.347). Treatment of ovary-intact and Ovx mice with ERb antagonist and agonist (PHTPP and DPN, respectively) did not affect PTP (P = 0.258). Treatment with G1, an agonist of the G protein-coupled estrogen receptor (GPER), significantly increased PTP in Ovx mice from 41 ± 10% to 66 ± 21% (means ± SD; P = 0.034). Collectively, these data indicate that E2 signals through GPER, and not ERa or ERb, in skeletal muscles of female mice to augment an in vivo parameter of strength, namely, PTP.

Estimates Of Agreement Between Three Low-Cost And One High-Cost Bioelectrical Impedance Analyzers Using Classical And Contemporary Dancers., Roberto González Marenco, Martha Medina-Escobedo, Joaquín Blanco-Castillo, Jorge Euan-Zapata, Saile Chan-Kantún, José Sanguino-Pinzón José, Cinthia Gamboa-Pereyra

International Journal of Exercise Science

International Journal of Exercise Science 16(4): 353-363, 2023. The aim of this study was to determine the concordance between the estimates of three low-cost and one high-cost electrical bioimpedance equipment (BIA) in classical and contemporary dancers. Participation in the study included 28 subjects (15 men and 13 women) 18 to 35 years old, who perform classical and/or modern dance, thrice weekly, from 60 to 120 min per session, for 10 years or more. Those who presented any disease, consumed drugs, supplements or multivitamins; had prostheses, surgical metal parts or pacemakers, had problems maintaining the correct anatomical positions for taking measurements, …

Changes In Physical Activity During The Covid-19 Pandemic: A Mixed Methods Assessment, Andrew Corbett, Kathryn E. Wilson, Andrew Van Horn, Jessica D. Ayers, Hector Hurmuz, Athena Aktipis

International Journal of Exercise Science

International Journal of Exercise Science 16(5): 327-341, 2023. COVID-19 was declared a global pandemic in March 2020. Resulting containment protocols altered the day-to-day lives of people around the globe, impacting typical physical activity patterns. The purpose of this mixed-method study was to understand how physical activity changes occurred during the first few months of the COVID-19 pandemic. Participants (n = 271) completed a survey including a qualitative item asking for descriptions of how their physical activity had changed, as well as a categorical item asking whether they had become more active, stayed equally as active, or become less active …

The Effect Of A Division 1 Women’S Basketball Strength And Conditioning Protocol On Mental Toughness, Zach Olivan, Jeff Cherubini, Andreas Stamatis Dr.

International Journal of Exercise Science

International Journal of Exercise Science 16(5): 315-326, 2023. Mental toughness (MT) is a popularized term in sports since it has been found to be positively related to performance. Self-assessment is the most common method of MT data collection. In the strength and conditioning (S&C) context, MT research has focused on males with a notable lack of female participants. Division 1 NCAA strength and conditioning coaches (SCC) spend more hours with their athletes during offseason training than any other coach. The purpose of this study was to measure the perceived effectiveness of an off-season S&C training regimen on MT levels of …

Heart Rate Variability As A Neuroautonomic Marker To Assess The Impact Of Karate Training – An Observational Pediatric Study, Puneet Bhattacharya Ms, Sridip Chatterjee, Samiran Mondal, Dilip Roy

International Journal of Exercise Science

International Journal of Exercise Science 16(2): 342-352, 2023. Habitual physical activity improves heart functions and parasympathetic tone; Karate training is considered as a moderate physical activity with rhythmical breathing patternology. Heart rate variability (HRV) is an electrophysiological tool which measures cardio autonomic homeostasis; is used in the present study as an indirect marker to measure neurocognitive development with karate training. The aim of the present study was to find out the impact of regular karate training on cardiac autonomic responses through Heart Rate Variability (HRV) between karate players and age-sex matched active controls. A total of 30 male school-going children …

Comparable Acute Metabolic Responses When Walking With Blood Flow Restriction And Walking With Load Carriage: Implication For Tactical Professionals, Nathan D. Dicks, Sean J. Mahoney, Allison M. Barry, Katie J. Lyman, Kyle J. Hackney

International Journal of Exercise Science

International Journal of Exercise Science 16(2): 304-314, 2023. The current study aimed to investigate exercise with blood flow restriction (BFR) as a low-intensity conditioning strategy in tactical professionals with load carriage. During the low-intensity exercise, researchers examined the acute metabolic responses from low-intensity BFR walking, walking with load carriage, and walking with BFR and load carriage. Twelve healthy adult males (age = 21.8 ± 1.5 yrs, height = 181.3 ± 7.2 cm, body mass = 84.4 ± 11.1 kg and BMI = 25.6 ± 2.6 kg^.m²) completed five bouts of 3-min treadmill walking at 4.8 kmh …

The Real-Time Classification Of Competency Swimming Activity Through Machine Learning, Larry Powell, Seth Polsley, Drew Casey, Tracy Hammond

International Journal of Aquatic Research and Education

Every year, an average of 3,536 people die from drowning in America. The significant factors that cause unintentional drowning are people’s lack of water safety awareness and swimming proficiency. Current industry and research trends regarding swimming activity recognition and commercial motion sensors focus more on lap swimming utilized by expert swimmers and do not account for freeform activities. Enhancing swimming education through wearable technology can aid people in learning efficient and effective swimming techniques and water safety. We developed a novel wearable system capable of storing and processing sensor data to categorize competitive and survival swimming activities on a mobile …

The Heart Rates And Movement Speed Of Specialist Tactical Police During A Multistorey Active Shooter Training Scenario, Jeremy Robinson, Mihajlo Micovic, Ben Schram, Alexander Leroux, Robin Marc Orr

International Journal of Exercise Science

International Journal of Exercise Science 16(4): 281-292, 2023. Specialist police tactical groups (PTGs) are involved in situations that extend beyond the capability of general duties police and can include responding to active shooter incidents. Due to the nature of their tasks, these officers typically carry and wear additional equipment which can impart an increased physical cost, for which the officers must be prepared. The aim of this study was to examine the heart rate responses and movement speeds of specialist PTG officers during a multistorey active shooter scenario. Eight PTG officers completed an active shooter scenario within a multistorey office …

Neuromuscular Responses To Failure Vs Non-Failure During Blood Flow Restriction Training In Untrained Females, Christopher E. Proppe, Taylor M. Aldeghi, Paola Rivera, David H. Gonzalez-Rojas, Ethan C. Hill Phd

International Journal of Exercise Science

International Journal of Exercise Science 16(1): 293-303, 2023. Applying blood flow restriction (BFR) during resistance exercise is a potent stimulus of muscular adaption, but there is little direct comparison of its effect on neuromuscular function. The purpose of this investigation was to compare surface electromyography amplitude and frequency responses during a 75 (1 × 30, 3 × 15) repetition bout (BFR-75) of BFR to 4 sets to failure (BFR-F). Twelve women (mean ± SD age = 22 ± 4 years; body mass = 72 ± 14.4 kg; height = 162.1 ± 4.0 cm) volunteered for the investigation. One leg was …

Salivary Cortisol Analysis In Collegiate Female Lacrosse Athletes, Jenna L. Carter, Stephanie L. Mathews, Yvette L. Figueroa, Jennifer A. Bunn

International Journal of Exercise Science

International Journal of Exercise Science 16(6): 242-251, 2023. Cortisol is a hormone that corresponds to physiological and emotional stress. The purpose of this study was to 1) evaluate the changes in cortisol in female Division I collegiate lacrosse players (n = 15) throughout the competitive season, and 2) evaluate the correlation between cortisol and athlete wellness and workload. Salivary cortisol samples were collected weekly in the morning throughout the entirety of the 2021 competitive season (12 weeks). Subjective athlete total wellness scores and sub-scores (muscle soreness, sleep quality, fatigue, and stress) were taken on the same days. Objective total …

The Effects Of Carbohydrate Intake On Body Composition And Muscular Strength In Trained Men Undergoing A Progressive Resistance Training, Alex Silva Ribeiro, Kamila Quintilhano, Witalo Kassiano, João Pedro Nunes, Ademar Avelar, Michele C. Trindade, Andreo Aguiar, Brad Schoenfeld, Edilson Serpeloni Cyrino

International Journal of Exercise Science

International Journal of Exercise Science 16(2): 267-280, 2023. This study's purpose was to compare the effects of different carbohydrate (CHO) intakes on body composition and muscular strength following eight weeks of resistance training (RT) in pre-conditioned men. In addition, we explored the individual responses to different CHO intakes. Twenty-nine young men volunteered to participate in this study. The participants were divided into two groups according to their relative CHO intake: lower (L-CHO; n = 14) and higher (H-CHO; n = 15). Participants performed a RT program four days a week for eight weeks. The lean soft tissue (LST) and fat …

Astaxanthin Reduces Heart Rate And Carbohydrate Oxidation Rates During Exercise In Overweight Individuals, Alissa Wika, Kyle W. Reason, Matt Green, Lauren Killen, Matthew J. Mcallister, Hunter Waldman

International Journal of Exercise Science

International Journal of Exercise Science 16(2): 252-266, 2023. Astaxanthin (AX) is an antioxidant which may spare endogenous carbohydrates and improve fat oxidation rates, thus improving metabolic flexibility. To date, no studies have attempted to examine the impact of AX in an overweight cohort, whom often suffer from metabolic inflexibility. Nineteen subjects (mean ± SD: age: 27.5 ± 6.3 years; height: 169.7 ± 9.0 cm; body mass: 96.4 ± 17.9 kg; BF%: 37.9 ± 7.0%; BMI: 33.4 ± 5.6 kg/m²; VO_2peak: 25.9 ± 6.7 ml·kg⁻¹·min⁻¹) were recruited and supplemented with either 12 mg …

The Metabolic And Physiological Demands Of A Simulated Fire Ground Test Versus A Live-Fire Training Evolution In Professional Firefighters, Drew Edward Gonzalez, Hunter Waldman, Matthew J. Mcallister

International Journal of Exercise Science

International Journal of Exercise Science 16(7): 230-241, 2023. Objective: This study examined the similarities in metabolic and physiological demands of a fire ground test (FGT) and a live fire training evolution. Methods: Twenty-seven firefighters completed either a FGT (n = 13) or a live fire training evolution (n = 14). Salivary samples were collected pre, immediately post, and 30-minutes post FGT and live fire training evolution, and analyzed for cortisol, uric acid, and interleukin-1β (IL-1β). Heart rate (HR) was measured pre- and post-task. Results: Both tasks resulted in significant elevations in cortisol, IL-1β, and HR. Conclusions: Both the …

Ischemic Preconditioning Improves The Bench-Press Maximal Strength In Resistance-Trained Men, Anderson Luiz Rodrigues, Bernardo N. Ide Dr., Jeffer Eidi Sasaki, Donizete Cicero X. De Oliveira Oliveira, Claudio De Oliveira Assumpção, Moacir Marocolo, Gustavo Mota

International Journal of Exercise Science

International Journal of Exercise Science 16(4): 217-229, 2023. We investigated whether acute ischemic preconditioning (IPC) would affect upper limb maximal strength performance in resistance-trained men. Using a counterbalanced randomized crossover design, fifteen men (29.9 ± 5.9 yrs.; 86.3 ± 9.6 kg; 8.0 ± 5.0 yrs. resistance training experience) performed one-repetition maximum (1-RM) bench press tests on three different occasions: control, 10 min post-IPC or 10 min post-placebo (SHAM). One-way analysis of variance showed that the post-IPC condition increased (P < 0.0001) 1-RM loads compared to both control and post-SHAM (control 113.3 ± 15.9 kg vs. SHAM 113.9 ± 15.8 kg vs. IPC 115.7 ± 15.6 kg), while control and SHAM did not differ (P > 0.05). Individual results showed that 13 participants (~87%) improved their performance post-IPC compared to control, and 11 participants (~73%) …

Effects Of A Head-Cooling Cap On 5-Km Running Performance In The Heat, Bernhard J. Spannagl, Mark Et Willems, Andrew T. West

International Journal of Exercise Science

International Journal of Exercise Science 16(6): 193-204, 2023. Cooling the head region during exercise can enhance running performance, but this observation is limited to intermittent cooling. This study investigated the effects of continuous head cooling on 5-km running time-trial (TT) performance in hot conditions. Six male and four female triathletes completed two experimental sessions consisting of two 10-minute runs at 50% and 70% O_2max followed by a 5-km TT in the heat (32.0±0.3 °C, 50.1±1.2% RH). In a randomized crossover design, either an ice-filled cooling cap or no cooling cap was provided prior to the 10-minute run at 70%O …

Interrater, Test-Retest Reliability Of The Y Balance Test. A Reliability Study Including 51 Healthy Participants, Frederik Nicolai Foldager, Sofie Louise Aslerin, Sarah Bækdal, Lisa Urup Tønning, Inger Mechlenburg

International Journal of Exercise Science

International Journal of Exercise Science 16(4): 182-192, 2023. The aim was to determine the relative and absolute interrater, test-retest reliability of the Y-Balance Test (YBT) in a sample of healthy and active adults aged 18 to 50 years. The sample consisted of 51 healthy and active participants, 30 men and 21 women with a mean age of 28 ± 7 years. The YBT was performed on the right leg in the three test directions. Test and retest of the YBT were performed with a median interval of 15 days. The method for data collection was in line with the Y …

Assessment Of Neuromuscular Fatigue 24 Hours After A Futsal Simulated Protocol In University Athletes, Cristian Andres Yanez Msc, Nestor Ochoa Msc, Luis Cardozo Msc, Jhonatan Peña Msc, Laura Nathalia Díaz Lnd, William Ojeda Wo, Jaime Rodriguez Jr

International Journal of Exercise Science

International Journal of Exercise Science 16(1): 205-216, 2023. The purpose of this study was to identify changes in neuromuscular performance variables evaluated through the countermovement jump test before and after (0 hours, after session and 24h post) of a simulated futsal protocol in young university female athletes. Fourteen eumenorrheic, healthy and experienced female futsal players were randomly assigned to an intervention group n = 7) or a control group (n = 7). Both groups performed three countermovement jumps before and after the protocol using an inertial system device. The intervention group completed a short-term functional agility and fatigue protocol that …

Shoulder Muscle Activity While Swimming In Different Wetsuits And Across Different Paces, Boram Lim, Alina P. Swafford, Katelyn E. Conroy, John A. Mercer

International Journal of Exercise Science

International Journal of Exercise Science 16(1): 172-181, 2023. A triathlon wetsuit is an important piece of equipment during the swim portion of the triathlon for the benefits of thermoregulation and additional buoyancy. However, a lack of knowledge exists about whether or not shoulder muscle activity is influenced by wearing a wetsuit. The purpose of this study was to determine if there were changes in shoulder muscle activity during front crawl with four different wetsuit conditions: Full sleeve (FSW), Sleeveless (SLW), Buoyancy shorts (BS), No wetsuit (NWS) in three different subjective swimming paces (slow, medium, and fast). Eight subjects (5 males, …

Two-Year Injury Incidence And Movement Characteristics Among Division-I Cross-Country Athletes, Kristyne Wiegand, Richard Tandy, Julia Freedman Silvernail

International Journal of Exercise Science

International Journal of Exercise Science 16(1): 159-171, 2023. While research on running injuries is common, there is a lack of definitive causal relationships between running injuries and gait mechanics. Additionally, there is a paucity of longitudinal research to understand the development of running injuries. The purpose of this study was to assess the incidence of running injuries and investigate movement characteristics as they relate to injury development in Division-I cross-country athletes over a two-year period. Athletes were evaluated at pre- and post-season with three-dimensional kinematic and kinetic gait analyses. A total of 17 female athletes were evaluated, though sample size …

Sit Less, Move More: A National Study Of Physical-Activity Behavior And Cancer, Stella O. Nwogugu

Dissertations, Theses, and Capstone Projects

Background: Physical activity is associated with lower risks of cancer, the second leading cause of death among Americans. Yet, sedentary behavior is the prevailing lifestyle for about 80% of American adults. Additionally, cancer survivors remain significantly inactive, even though physical activity has been shown to decrease risk of cancer and cancer recurrence, improve tolerance of cancer therapy, and reduce mortality. This research explores the relative impact of personal agency, social support, and key demographic variables on physical-activity behavior for a national sample of adults as well as how these relationships differ for cancer survivors and their counterparts.

Methods: Using the …

The Acute Effects Of Ischemic Preconditioning On Short-Duration Cycling: A Randomized Crossover Study, Cassidy R. Nelson, Colten R. Brand, Matthew R. Chitty, Chad B. Birger, Shane D. Scholten

International Journal of Exercise Science

International Journal of Exercise Science 16(6): 148-158, 2023. There is recent interest from coaches and athletes regarding IPC as an effective way to generate better competitive outcomes. Regarding cycling specifically, the impact of IPC remains unclear. This study aimed to assess the effectiveness of IPC treatment for improving athletic performance during short-duration cycling. After the exclusion and inclusion criteria, there were 11 volunteers for the 3-minute cycling TT and 13 volunteers for the 6-minute cycling TT. All volunteers were competitive athletes of aerobic sports. The IPC treatment consisted of three alternating cycles of 5 minutes of 100% occlusion followed by …

Do Female University Varsity Athletes Have A Greater Risk Of Injury Within A Competitive Varsity Season?, Aidan K. Comeau, Eric C. Parent, Michael D. Kennedy

International Journal of Exercise Science

International Journal of Exercise Science 16(6): 129-147, 2023. Previous varsity sport injury research has analyzed how acute and chronic injury severity, type, and location differs between sport and sexes, with limited research in time to injury. Canadian university varsity sport injury research is especially sparse and mostly retrospective. Thus, we aimed to understand injury differences in male and female competitive university athletes competing in the same sport. Athletes who competed on the basketball, volleyball, soccer, ice hockey, football (male), rugby (female), and wrestling teams were eligible for the study. There were 182 male and 113 female athletes who provided informed …

Acute Blood Flow Responses To Varying Blood Flow Restriction Pressures In The Lower Limbs, Bjoern Hornikel, Keith S. Saffold, Jacob A. Mota, Michael R. Esco, Michael V. Fedewa, Stefanie A. Wind, Lee J. Winchester

International Journal of Exercise Science

International Journal of Exercise Science 16(2): 118-128, 2023. The purpose of this study was to investigate lower limb blood flow responses under varying blood flow restriction (BFR) pressures based on individualized limb occlusion pressures (LOP) using a commonly used occlusion device. Twenty-nine participants (65.5% female, 23.8 ± 4.7 years) volunteered for this study. An 11.5cm tourniquet was placed around participants’ right proximal thigh, followed by an automated LOP measurement (207.1 ± 29.4mmHg). Doppler ultrasound was used to assess posterior tibial artery blood flow at rest, followed by 10% increments of LOP (10-90% LOP) in a randomized order. All data were …