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Exercise Physiology Commons™

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2021

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Articles 121 - 150 of 188

Full-Text Articles in Exercise Physiology

Impact Of A Summer Nutrition And Physical Activity Intervention To Attenuate Obesity In Urban African-American Youth, Jermaine B. Mitchell, Antonio J. Gardner, Zachary Wahl-Alexander, Ben Schwamberger, Douglas Craddock Jr., Carol N. Agomo, Myia C. Lang Mar 2021

Impact Of A Summer Nutrition And Physical Activity Intervention To Attenuate Obesity In Urban African-American Youth, Jermaine B. Mitchell, Antonio J. Gardner, Zachary Wahl-Alexander, Ben Schwamberger, Douglas Craddock Jr., Carol N. Agomo, Myia C. Lang

International Journal of Aquatic Research and Education

Improved eating behaviors and daily participation in physical activity such as swimming might abate the likelihood of African American youth becoming obese. Yet many African American youth neither consume the recommended daily servings of nutritious foods nor know how to swim. The purpose of this study was to investigate the impact of a culturally tailored multicomponent summer intervention to reduce obesity and unintentional drownings among underserved African American youth. Children (n = 145) participated in a three-hour, community-based intervention for four weeks. Measures of children’s attitudes perceived behavioral control, and subjective norms toward swimming, nutrition, and physical fitness were …

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A Kinesiological Analysis Of Dancers At The University Of Nebraska-Lincoln, Vanessa Reiser Mar 2021

A Kinesiological Analysis Of Dancers At The University Of Nebraska-Lincoln, Vanessa Reiser

Honors Program: Senior Projects (Public)

Supplemental conditioning can improve a dancer’s performance of important skills without taking away from class and rehearsal time. To investigate this further, an individualized conditioning plan based on a specific skill was created for eight student dancers, and the effects were analyzed using a survey and rating scale by a trained dance professor. The results showed improvement of skills for the majority of dancers, along with improved fitness in qualities such as strength and balance. In conclusion, individualized conditioning plans based on a specific skill may benefit student dancers who are juggling intense class and rehearsal schedules.

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Characteristics Of Physiology And Physiology-Related Pre-Health Degree Programs In The Physiology Majors Interest Group, Yvonne Ogrodzinski, Erica A. Wehrwein, Kevin Kelly, James M. Poteracki, Valerie Vanryn, Anne R. Crecelius Mar 2021

Characteristics Of Physiology And Physiology-Related Pre-Health Degree Programs In The Physiology Majors Interest Group, Yvonne Ogrodzinski, Erica A. Wehrwein, Kevin Kelly, James M. Poteracki, Valerie Vanryn, Anne R. Crecelius

Health and Sport Science Faculty Publications

The Physiology Majors Interest Group (P-MIG), a grassroots organization of educators, has collected data on the history and characteristics of Physiology and highly related undergraduate programs (ex: Human Biology, Pre-Medicine, Biomedical Sciences, etc.) that serve a common population of prehealth students. Data was obtained as part of an online survey sent out to P-MIG conference attendees at the 2017-2019 annual meetings (n=30). Participating institutions indicate that 25.9% have degrees called Physiology aligned with 28% being housed in a department of physiology, 75.9% are a Bachelor of Science program, 34.9% are affiliated with a College of Arts and Sciences, and 80% …

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Physical And Lifestyle Factors Influencing Bone Density In Jockeys: A Comprehensive Update Of The Bone Density Status Of Irish Jockeys, Arthur Dunne, Giles Warrington, Adrian Mcgoldrick, Jennifer Pugh, Michael Harrison, Siobhan O'Connor, Gillian O'Loughlin, Sarahjane Cullen Feb 2021

Physical And Lifestyle Factors Influencing Bone Density In Jockeys: A Comprehensive Update Of The Bone Density Status Of Irish Jockeys, Arthur Dunne, Giles Warrington, Adrian Mcgoldrick, Jennifer Pugh, Michael Harrison, Siobhan O'Connor, Gillian O'Loughlin, Sarahjane Cullen

International Journal of Exercise Science

International Journal of Exercise Science 14(6): 324-337, 2021. Compromised bone density in jockeys has previously been identified as an important health and safety concern in horseracing. Despite this, no update on the bone density status in Irish jockeys has been provided in the past decade. The study aimed to conduct a comprehensive update of the current bone density status in professional Irish jockeys and identify possible contributory physical and lifestyle factors. Eighty-five professional male jockeys (flat n = 39; national hunt (NH) n = 46) completed a dual-energy X-ray absorptiometry (DXA) scan for the assessment of body composition and bone …

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Effects Of A Vibrating Foam Roller On Ipsilateral And Contralateral Neuromuscular Function And The Hamstring-To-Quadriceps Ratios, Rachel M. Ruggieri, Jared W. Coburn, Andrew J. Galpin, Pablo B. Costa Feb 2021

Effects Of A Vibrating Foam Roller On Ipsilateral And Contralateral Neuromuscular Function And The Hamstring-To-Quadriceps Ratios, Rachel M. Ruggieri, Jared W. Coburn, Andrew J. Galpin, Pablo B. Costa

International Journal of Exercise Science

International Journal of Exercise Science 14(1): 304-323, 2021. The effects of vibrating foam rolling the hamstrings on range of motion (ROM), hamstrings-to-quadriceps (H:Q) ratios, muscle activation, and peak torque (PT) of the quadriceps and hamstrings have yet to be extensively studied. The aim of this study was to investigate the effects of a vibrating foam roller on the hamstrings. Fifteen resistance trained women (mean age ± SD = 22.9 ± 2.0 years, height = 162.7 ± 4.8 cm, body mass = 66.0 ± 9.7 kgs, BMI = 24.9 ± 3.3 kg·m2) participated in five separate testing sessions to …

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The Effects Of Acute Exercise On Bone Turnover Markers In Middle-Aged And Older Adults: A Systematic Review, Cassandra Smith, Alexander Tacey, Jakub Mesinovic, David Scott, Xuzhu Lin, Tara C. Brennan-Speranza, Joshua R. Lewis, Gustavo Duque, Itamar Levinger Feb 2021

The Effects Of Acute Exercise On Bone Turnover Markers In Middle-Aged And Older Adults: A Systematic Review, Cassandra Smith, Alexander Tacey, Jakub Mesinovic, David Scott, Xuzhu Lin, Tara C. Brennan-Speranza, Joshua R. Lewis, Gustavo Duque, Itamar Levinger

Research outputs 2014 to 2021

© 2020 Elsevier Inc. Background: Bone turnover is the cellular machinery responsible for bone integrity and strength and, in the clinical setting, it is assessed using bone turnover markers (BTMs). Acute exercise can induce mechanical stress on bone which is needed for bone remodelling, but to date, there are conflicting results in regards to the effects of varying mechanical stimuli on BTMs. Objectives: This systematic review examines the effects of acute aerobic, resistance and impact exercises on BTMs in middle and older-aged adults and examines whether the responses are determined by the exercise mode, intensity, age and sex. Methods: We …

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Estimating The Lactate Threshold Using Wireless Near-Infrared Spectroscopy And Threshold Detection Analyses, Trent E. Cayot, Shara G. Robinson, Lindsay E. Davis, Paul A. Bender, John R. Thistlethwaite, Craig E. Broeder, Jakob D. Lauver Feb 2021

Estimating The Lactate Threshold Using Wireless Near-Infrared Spectroscopy And Threshold Detection Analyses, Trent E. Cayot, Shara G. Robinson, Lindsay E. Davis, Paul A. Bender, John R. Thistlethwaite, Craig E. Broeder, Jakob D. Lauver

International Journal of Exercise Science

International Journal of Exercise Science 14(4): 284-294, 2021. The present investigation examined the ability of two threshold detection analyses (maximum distance, Dmax; modified maximum distance, mDmax) in identifying the near-infrared spectroscopy (NIRS) threshold, a lactate threshold (LT) estimate, from exercising tissue oxygen saturation (StO2) responses. Additionally, the test-retest reliability of exercising StO2 and total hemoglobin concentration (THC) responses were examined at moderate and peak cycling intensities. Fourteen healthy, recreationally active participants performed maximal incremental step cycling tests (+25 W / 3 minutes) to volitional fatigue on two separate occasions while StO2 and THC of the vastus …

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Different Cooling Strategies Applied During Inter-Set Rest Intervals In High-Intensity Resistance Training, Gilmar J. Esteves, Renato A. Garcia, Paulo H. S. M. Azevedo Feb 2021

Different Cooling Strategies Applied During Inter-Set Rest Intervals In High-Intensity Resistance Training, Gilmar J. Esteves, Renato A. Garcia, Paulo H. S. M. Azevedo

International Journal of Exercise Science

International Journal of Exercise Science 14(2): 295-303, 2021. The purpose of this study was to verify whether cooling between sets during high-intensity resistance exercise improves physical performance and to compare performance among different sites of cooling. It is important because delaying the muscular fatigue could improve total volume at a training session which could lead to greater hypertrophy. Nine healthy and recreational resistance training experienced men, performed six tests of a biceps curl exercise on different days. The first test was the one-repetition maximum test (1RM). Following, we applied five sessions, in crossover and randomized (counter-balanced) design. The subjects received …

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Getting In: Safe Water Entry Competencies, Kevin Moran Dr, Jennifer Blitvich, Lauren Petrass, Keith Mcelroy Feb 2021

Getting In: Safe Water Entry Competencies, Kevin Moran Dr, Jennifer Blitvich, Lauren Petrass, Keith Mcelroy

International Journal of Aquatic Research and Education

In high income countries, jumping and diving into water are a small but persistent cause of death and serious injury especially among male youth and young adults. Although water entries maintain a high media profile, little is known about what entry competencies and underlying water safety knowledge youth bring to this practice. Undergraduates enrolled in aquatics (N= 76) completed a survey before attempting 7 entry jumping and diving tasks. While safety attitudes and self-reported behaviours were generally good, considerable variation in practical entry competence was evident. Most completed a deep-water compact jump (87%) and PFD jump (88%) with …

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Perceptions Of Water Competencies, Drowning Risk And Aquatic Participation Among Older Adults, Teresa Stanley, Kevin Moran Feb 2021

Perceptions Of Water Competencies, Drowning Risk And Aquatic Participation Among Older Adults, Teresa Stanley, Kevin Moran

International Journal of Aquatic Research and Education

New Zealand has an aging population and, despite falling drowning tolls in all other age groups (WSNZ, 2019c), older adults have continued to drown in both increasing numbers and proportion. The reasons for this are not well understood since very little drowning research has focused on older people. A water safety survey (N = 389) seeking information on older adults’ aquatic recreational practices and perceptions of safety was conducted at the end of the summer season, 2019. Most adults (86%, n = 335) reported some aquatic activity in the previous year, but those aged 65+ years (66%) were significantly …

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In This Issue (13:2), Stephen J. Langendorfer Ph.D. Feb 2021

In This Issue (13:2), Stephen J. Langendorfer Ph.D.

International Journal of Aquatic Research and Education

front matter to Volume 13, Issue 2

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Water Safety Education Programs In Culturally And Linguistically Diverse Seattle Communities: Program Design And Pilot Evaluation, William A. Koon, Elizabeth Bennett, Sarah Stempski, Jennifer Blitvich Feb 2021

Water Safety Education Programs In Culturally And Linguistically Diverse Seattle Communities: Program Design And Pilot Evaluation, William A. Koon, Elizabeth Bennett, Sarah Stempski, Jennifer Blitvich

International Journal of Aquatic Research and Education

Drowning is a public health concern that disproportionally affects children and minorities in Washington State. Community health educators from Seattle Children’s Hospital designed a Water Safety Education and Lifejacket Giveaway Program for low-income parents of preschool-aged children from culturally and linguistically diverse backgrounds. The program was interpreted into multiple languages and parents and children in attendance received free lifejackets. The mixed-methods pilot evaluation of this program found statistically significant relationships between language and self-reported parent swim skill level (English-speaker OR 4.6; 95%CI: 1.84 – 11.54); and confidence of keeping one’s child safe (English-speaker OR 3.34; 95%CI: 1.10 – 10.4). Additionally, …

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Surfboard Paddling Technique And Neuromechanical Control: A Narrative Review, Wynand Volschenk, Zachary J. Crowley-Mchattan, John W. Whitting, Rudi A. Meir, Alec K. Mckenzie Feb 2021

Surfboard Paddling Technique And Neuromechanical Control: A Narrative Review, Wynand Volschenk, Zachary J. Crowley-Mchattan, John W. Whitting, Rudi A. Meir, Alec K. Mckenzie

International Journal of Aquatic Research and Education

Surfboard paddling is an essential activity when surfing. Research investigating surfboard paddling, especially as it pertains to neuromechanical control and techniques used, is limited. Previous research made use of swim ergometers to examine surfboard paddling demands. The validity of using swim ergometers in surfboard paddling research and training deserves further analysis. To establish ecologically valid findings, researchers have begun to use swim flumes and still-water paddling environments to investigate paddling efficiency and technique. This emerging body of research has reported that muscle activation patterns, intensities, and timings differ as surfers move through different paddle stroke phases. A deeper understanding of …

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Acute Effects Of Foam Rolling On Cycling Performance: A Randomized Cross-Over Study, Julio Benvenutti Bueno De Camargo, Paulo Henrique Barbosa, Matheus Moraes, Tiago Volpi Braz, Felipe Alves Brigatto, Danillo Rodrigues Batista, Guilherme Businari, Charlini Hartz, Ricardo Simoes, Marcelo Saldanha Aoki, Charles Ricardo Lopes Feb 2021

Acute Effects Of Foam Rolling On Cycling Performance: A Randomized Cross-Over Study, Julio Benvenutti Bueno De Camargo, Paulo Henrique Barbosa, Matheus Moraes, Tiago Volpi Braz, Felipe Alves Brigatto, Danillo Rodrigues Batista, Guilherme Businari, Charlini Hartz, Ricardo Simoes, Marcelo Saldanha Aoki, Charles Ricardo Lopes

International Journal of Exercise Science

International Journal of Exercise Science 14(6): 274-283, 2021. Acute foam rolling protocols may increase range of motion without a negative impact on muscle performance. The main purpose of the present study was to investigate the acute effects of foam rolling on cycling performance (mean power and maximal power), affect and perceived exertion. A secondary aim was to assess the effect of foam rolling on post-exercise muscle soreness. In a random order, ten recreationally trained cyclists (age: 26 ± 5 years; height 1.76 ± 0.06 m; total body mass 78.3 ± 19.8 kg; cycling experience: 5.6 ± 5.3 years; 4.1 ± …

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Evaluating The Clinical Utility Of Daily Heart Rate Variability Assessment For Classifying Meaningful Change In Testosterone-To-Cortisol Ratio: A Preliminary Study, Justin A. Deblauw, Derek A. Crawford, Brady K. Kurtz, Nicholas B. Drake, Katie M. Heinrich Feb 2021

Evaluating The Clinical Utility Of Daily Heart Rate Variability Assessment For Classifying Meaningful Change In Testosterone-To-Cortisol Ratio: A Preliminary Study, Justin A. Deblauw, Derek A. Crawford, Brady K. Kurtz, Nicholas B. Drake, Katie M. Heinrich

International Journal of Exercise Science

International Journal of Exercise Science 14(3): 260-273, 2021. The study purpose was to determine the relationship of resting heart rate variability (HRV) and testosterone to cortisol (T:C) ratio, along with the diagnostic ability of HRV to assess changes in T:C ratio during a 9-week high-intensity functional training intervention. Eight recreationally-active men (n = 4, age 24.25 ± 1.75 yrs, height 181.25 ± 3.86 cm, weight 79.68 ± 11.66 kg) and women (n = 4, age 26 ± 3.6 yrs, height 164.25 ± 3.3, weight 73.4 ± 8.42) completed daily HRV measurements (HRVdaily) using photoplethysmography via a commercially-available smartphone …

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The Influence Of Education On The Nutritional Knowledge Of Certified Fitness Professionals, Bridget F. Melton, Joelle Romanchik-Cerpovicz, Greg A. Ryan, Catherine Gallagher Feb 2021

The Influence Of Education On The Nutritional Knowledge Of Certified Fitness Professionals, Bridget F. Melton, Joelle Romanchik-Cerpovicz, Greg A. Ryan, Catherine Gallagher

International Journal of Exercise Science

International Journal of Exercise Science 14(4): 239-249, 2021. The American Fitness Industry has seen progressive success with recent increases in facility memberships and annual revenues of fitness centers. The number of fitness trainers and instructors in the United States has persisted this growth and is projected to grow over the next decade. However, only a few known studies have investigated the nutritional education of fitness professionals. This preliminary study explores the education and knowledge among certified fitness professions (CFPs) in the United States. A cross-sectional, descriptive survey design was utilized with a convenience sample of 120 female participants from the …

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Dark Chocolate Supplementation Elevates Resting Energy Expenditure In Exercise Trained Females, Katie M. Presler, Michael Webster Feb 2021

Dark Chocolate Supplementation Elevates Resting Energy Expenditure In Exercise Trained Females, Katie M. Presler, Michael Webster

International Journal of Exercise Science

International Journal of Exercise Science 14(2): 250-259, 2021. Several recent reports have indicated positive health and exercise benefits of (-)-epicatechin-rich cocoa products. This study investigated the influence of dark chocolate (DC) supplementation on resting and steady state exercise metabolism in a group of athletically fit females. Using a randomized, single-blind design, 18 exercise trained female subjects were assigned to a 30-d supplementation with either 20g· d-1 of 70% DC (n = 9) or a calorically matched white chocolate (WC) (n = 9). Pre-supplementation (PRE), subjects underwent indirect calorimetry assessment for resting energy expenditure (REE) and exercise energy …

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Comparison Of The Three-Site And Seven-Site Measurements In Female Collegiate Athletes Using Bodymetrix, Amanda M. Elsey, Alister K. Lowe, Ashley N. Cornell, Paul N. Whitehead, Ryan T. Conners Jan 2021

Comparison Of The Three-Site And Seven-Site Measurements In Female Collegiate Athletes Using Bodymetrix, Amanda M. Elsey, Alister K. Lowe, Ashley N. Cornell, Paul N. Whitehead, Ryan T. Conners

International Journal of Exercise Science

International Journal of Exercise Science 14(4): 230-238, 2021. One method to measure body composition that is gaining popularity is the BodyMetrix™, which uses A-mode ultrasound. A-mode ultrasound, when used with the BodyMetrix™, has been found to be a reliable and a cost-effective tool for measuring overall body fat percentage. Furthermore, the portability and short duration testing features of the BodyMetrix™, allows for testing of a large group of athletes inside or outside of a clinical setting. Despite these advantages, research regarding the BodyMetrix™ is limited and has primarily focused on the seven-site testing technique. However, the three-site technique allows for …

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Acetic Acid Supplementation: Effect On Resting And Exercise Energy Expenditure And Substrate Utilization, Kolton M. Cobb, Domenico A. Chavez, Jonathan D. Kenyon, Zachary J. Hutelin, Michael Webster Jan 2021

Acetic Acid Supplementation: Effect On Resting And Exercise Energy Expenditure And Substrate Utilization, Kolton M. Cobb, Domenico A. Chavez, Jonathan D. Kenyon, Zachary J. Hutelin, Michael Webster

International Journal of Exercise Science

International Journal of Exercise Science 14(2): 222-229, 2021. The purpose of this study was to investigate the influence of acetic acid (apple cider vinegar; ACV) supplementation on resting and exercise energy expenditure and substrate utilization. Using a randomized, double blind, crossover design, 16 healthy subjects were supplemented for 4 d with either ACV (30-ml/d) mixed in 1 L of a non-nutritive lemon-flavored drink or a placebo (PLA). They were then assessed via indirect calorimetry for resting energy expenditure (REE) and substrate utilization. This was immediately followed by the assessment of steady state cycling exercise energy expenditure at 40 W (EEE-40) …

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Ground Reaction Forces And Temporal Characteristics Define Cutting Performance, Matthew L. Welinski, Lindsey N. Lee, Blake Mcbroom, Bassel Mufarreh, Lex Gidley Jan 2021

Ground Reaction Forces And Temporal Characteristics Define Cutting Performance, Matthew L. Welinski, Lindsey N. Lee, Blake Mcbroom, Bassel Mufarreh, Lex Gidley

International Journal of Exercise Science

International Journal of Exercise Science 14(1): 211-221, 2021. Moderate angle cutting maneuvers (between 45º and 90º) are common and essential performance skills for success in multidirectional sports. Research addresses the injury risks of cutting but few studies have attempted to quantify the performance of the cut itself. PURPOSE: To identify any anthropometric, kinematic, and/or kinetic markers of a high-performance cut so they may be taught and lead to more effective training. METHODS: Ten college-aged male athletes (mass 73.97 ± 8.77kg, height 1.81 ± 0.07m) and ten non-athletes (mass 87.37 ± 13.93kg, height 1.85 ± 0.04m) completed five moderate angle cutting …

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Influence Of Trunk Position During Three Lunge Exercises On Muscular Activation In Trained Women, Ewertton De Souza Bezerra, Fernando Diefenthaeler, João Pedro Nunes, Raphael Luiz Sakugawa, Isabel Heberle, Bruno M. Moura, Antônio R. P. Moro, Giuseppe Marcolin, Antonio Paoli Jan 2021

Influence Of Trunk Position During Three Lunge Exercises On Muscular Activation In Trained Women, Ewertton De Souza Bezerra, Fernando Diefenthaeler, João Pedro Nunes, Raphael Luiz Sakugawa, Isabel Heberle, Bruno M. Moura, Antônio R. P. Moro, Giuseppe Marcolin, Antonio Paoli

International Journal of Exercise Science

International Journal of Exercise Science 14(1): 202-210, 2021. The present study aimed to compare the activation of the lower lumbar erector spinae, gluteus maximus, biceps femoris, and rectus femoris in two trunk positions (straight, and inclined) during three lunge exercises (static, step-forwarding, and walking) in trained young women in a randomized crossover design. Twelve women (24 ± 3 years) were selected and performed the lunge exercise with an overload of 30% of body weight in six conditions to analyze muscle activation via surface electromyography signals. Higher activation in the erector spinae (%MVIC) were observed (p < 0.05) when trunk position was inclined (straight = 20 ± 15, inclined = 40 ± 29) and during the walking lunge condition (static = 24 ± 16, forward = 26 ± 22, walking = 40 ± 33). Higher activation in the gluteus maximus was observed during step-forward and walking lunges conditions (static = 31 ± 12, forward = 54 ± 20, walking = 58 ± 30). All conditions displayed similar activations in the biceps femoris and rectus femoris (p > 0.05). Results indicate …

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Rating Of Perceived Exertion In Three-Minute Step Test In Children With Cystic Fibrosis, Amanda Paiva Silva, Érika Veiga Araújo, Igor Pereira Machado, Lívia Ferreira Alves, Marcos Filipe Da Silva Mello, Pedro Henrique De Almeida Silva, Isabella Rodrigues Dias, Viviane Soares Jan 2021

Rating Of Perceived Exertion In Three-Minute Step Test In Children With Cystic Fibrosis, Amanda Paiva Silva, Érika Veiga Araújo, Igor Pereira Machado, Lívia Ferreira Alves, Marcos Filipe Da Silva Mello, Pedro Henrique De Almeida Silva, Isabella Rodrigues Dias, Viviane Soares

International Journal of Exercise Science

International Journal of Exercise Science 14(3): 177-186, 2021. The purpose of the study was to assess whether there are differences in cardiorespiratory fitness between children with and without cystic fibrosis (CF). Ten children with CF attended at a referral center for the treatment of CF and 13 children without CF were evaluated. The average age of the children with CF was 10.40 (3.13) years and those without CF was 9.39 (3.25) years. The children performed the three-minute step test with monitoring of hemodynamic parameters and the rating of perceived exertion (RPE) every minute. Oxygen desaturation of 4% during the test …

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Structured Exercise In Cancer Survivors: Is It Enough For Neural, Mental Health And Well-Being?, Peter Smoak, Victoria Flores, Nicholas Harman, Jonathon Lisano, Reid Hayward, Laura Stewart Jan 2021

Structured Exercise In Cancer Survivors: Is It Enough For Neural, Mental Health And Well-Being?, Peter Smoak, Victoria Flores, Nicholas Harman, Jonathon Lisano, Reid Hayward, Laura Stewart

International Journal of Exercise Science

International Journal of Exercise Science 14(3): 162-176, 2021. The purpose of this cross-sectional study was to explore physical activity, depression, fatigue, and quality of life (QOL), and their relationship to brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) in cancer survivors enrolled in a structured exercise program. Participants were recruited into two groups: in-treatment (IT), currently receiving chemotherapy and/or radiotherapy, and out of treatment (OT), not undergoing therapy. Participants wore accelerometers for 7 days and completed cardiorespiratory fitness, muscular strength, and depression, fatigue, and QOL assessments. Circulating BDNF and NGF concentrations were obtained using enzyme-linked immunosorbent assays. Thirty-two participants …

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Comparison Of Emg Activity Between Single-Leg Deadlift And Conventional Bilateral Deadlift In Trained Amateur Athletes - An Empirical Analysis, Wiktor Piotr Diamant, Stephan Geisler, Tim Havers, Axel Knicker Jan 2021

Comparison Of Emg Activity Between Single-Leg Deadlift And Conventional Bilateral Deadlift In Trained Amateur Athletes - An Empirical Analysis, Wiktor Piotr Diamant, Stephan Geisler, Tim Havers, Axel Knicker

International Journal of Exercise Science

International Journal of Exercise Science 14(1): 187-201, 2021. The purpose of the study was to compare the normalized-electromyographic (NEMG) activity of the gluteus maximus (GMAX), gluteus medius (GMED), biceps femoris (BF) and erector spinae (ES) muscles during the single-leg deadlift (SLDL) and the conventional-deadlift (DL). Additionally, a potential influence of body height on the NEMG activity was examined. Fifteen training-experienced male subjects completed the study. SLDL showed significantly higher average concentric NEMG values of the GMED (77.6% vs. 59.3% [p = 0.002, ES = 1.0]) and BF (82.1% vs. 74.2% [p = 0.041, ES = 0.6]). Significantly lower …

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Effectiveness Of A Computerized Cognitive Training Program For Reducing Head Impact Kinematics In Youth Ice Hockey Players, Melissa S. Difabio, Thomas A. Buckley Jan 2021

Effectiveness Of A Computerized Cognitive Training Program For Reducing Head Impact Kinematics In Youth Ice Hockey Players, Melissa S. Difabio, Thomas A. Buckley

International Journal of Exercise Science

International Journal of Exercise Science 14(1): 149-161, 2021. Cognitive training (CT) is an effective technique to improve neurological performance, but has not been investigated as a head impact primary prevention strategy. The purpose of this study was to investigate the CT’s effectiveness in reducing head impact kinematics in youth ice hockey players. Twenty youth were divided into two groups: a CT and Control group. The CT group performed two 30-minute sessions of IntelliGym CT weekly for 20 weeks and the control group performed two 30-minute sessions weekly evaluating hockey videos. The dependent variables, number of head impacts, cumulative linear acceleration …

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Effects Of Heart Rate Biofeedback, Sleep, And Alertness On Marksmanship Accuracy During A Live-Fire Stress Shoot, Jared Hornsby, Brittany Johnson, Donald P. Meckley, Anna Blackley, Will Peveler, Jeffrey Lowes, J. Jay Dawes Jan 2021

Effects Of Heart Rate Biofeedback, Sleep, And Alertness On Marksmanship Accuracy During A Live-Fire Stress Shoot, Jared Hornsby, Brittany Johnson, Donald P. Meckley, Anna Blackley, Will Peveler, Jeffrey Lowes, J. Jay Dawes

International Journal of Exercise Science

International Journal of Exercise Science 14(6): 123-133, 2021. On the job, law enforcement may be required to utilize lethal force to maintain personal or public safety. Officers’ attention to detail, decision-making, and marksmanship accuracy (MA) may be impaired by reduced sleep, increased heart rate (HR), and breathing rate (BR). HR biofeedback (emWave, EW) may help mitigate these impairments. This study sought to determine the impact EW had on MA, stress shoot time-to-completion (TTC), HR and BR versus placebo (PLA). Ten active-duty police officers volunteered for this study. Officers completed two live-fire stress shoots on a 25-m gun range (i.e., familiarization, …

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Psychological Status During And After The Preparation Of A Long-Distance Triathlon Event In Amateur Athletes, Vincent Gosselin Boucher, Maxime Caru, Sarah-Maude Martin, Maxime Lopes, Alain Steve Comtois, Francois Lalonde Jan 2021

Psychological Status During And After The Preparation Of A Long-Distance Triathlon Event In Amateur Athletes, Vincent Gosselin Boucher, Maxime Caru, Sarah-Maude Martin, Maxime Lopes, Alain Steve Comtois, Francois Lalonde

International Journal of Exercise Science

International Journal of Exercise Science 14(5): 134-148, 2021. Preparation for an endurance event among amateur athletes requires a major commitment on their part. Knowing amateur athletes’ psychological characteristics during a training period should be a priority for coaches and athletes. The aim of our longitudinal study was to characterize the psychological profile of amateur athletes over a training period of six months prior to and after a long-distance triathlon. Thirty-two amateur athletes (13 females; 19 males; 1.5±1.3 years of experience) were recruited for this observational study. All participants (39±9.9 years old; weighs 73±12.9 kg; measure 172±10.2 cm) underwent a physical …

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A Short-Term Paleolithic Dietary Intervention Does Not Alter Adipokines Linked To Adiposity, Rachel M. Graff, Kristofer Jennings, Natalie A. Davies, Andres E. Carrillo, Emily C. Lavoy, Edward J. Ryan, Melissa M. Markofski Jan 2021

A Short-Term Paleolithic Dietary Intervention Does Not Alter Adipokines Linked To Adiposity, Rachel M. Graff, Kristofer Jennings, Natalie A. Davies, Andres E. Carrillo, Emily C. Lavoy, Edward J. Ryan, Melissa M. Markofski

International Journal of Exercise Science

International Journal of Exercise Science 14(2): 113-122, 2021. The Paleolithic diet, characterized by an emphasis on hunter-gatherer type foods accompanied by an exclusion of grains, dairy products, and highly processed food items, is often promoted for weight loss and a reduction in cardiometabolic disease risk factors. Specific adipokines, such as adiponectin, omentin, nesfatin, and vaspin are reported to be dysregulated with obesity and may respond favorably to diet-induced fat loss. We aimed to evaluate the effects of an eight-week Paleolithic dietary intervention on circulating adiponectin, omentin, nesfatin, and vaspin in a cohort of physically inactive, but otherwise healthy adults. Methods: …

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Lumbar Multifidus Muscle Thickness During Graded Quadruped And Prone Exercises, Konstantinos Dafkou, Eleftherios Kellis, Athanasios Ellinoudis, Chrysostomos Sahinis Jan 2021

Lumbar Multifidus Muscle Thickness During Graded Quadruped And Prone Exercises, Konstantinos Dafkou, Eleftherios Kellis, Athanasios Ellinoudis, Chrysostomos Sahinis

International Journal of Exercise Science

International Journal of Exercise Science 14(7): 101-112, 2021. Exercises for lumbar multifidus (LM) muscle are important for injury and low back pain prevention and treatment. This study examined the differences in LM contraction thickness between variations of the superman and bird dog exercises. Twenty-one recreational athletes performed the superman exercise from the prone position with the following grading: rest, right upper extremity lift (RU), right lower extremity (RL) and upper and lower extremities lift (UL). They also performed the following bird dog variations from the quadruped position: rest, RU, RL and left upper - right lower extremity lift (LURL). LM …

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Effect Of Large Versus Small Range Of Motion In The Various Intensities Of Eccentric Exercise-Induced Muscle Pain And Strength, Chakravarthy M. Sadacharan, Sumin Seo Jan 2021

Effect Of Large Versus Small Range Of Motion In The Various Intensities Of Eccentric Exercise-Induced Muscle Pain And Strength, Chakravarthy M. Sadacharan, Sumin Seo

International Journal of Exercise Science

International Journal of Exercise Science 14(7): 1-18, 2021. The purpose was to investigate eccentric (ECC) exercise with full range of motion (FROM) induce a greater magnitude of delayed onset muscle soreness (DOMS), pain, functional limitations compared to partial range of motion (PROM; outer 60° of ROM). Thirty-four participants (men and women) aged between 18 and 30 years performed ECC exercise protocol on elbow and knee muscles (5 × 10 repetitions each session) using their 15%/25%/35% of maximal voluntary isometric contraction (MVIC) with PROM (week 2-4) and FROM (week 6-8). Two days a week, ECC exercises and remaining days the subjective …

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