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Full-Text Articles in Physiology

Relationships Between Playing Time And Selected Nba Combine Test Performance In Division I Mid-Major Basketball Players, Robert G. Lockie, Aleksander Beljic, Spencer Ducheny, Joseph Kammerer, J. Jay Dawes Apr 2020

Relationships Between Playing Time And Selected Nba Combine Test Performance In Division I Mid-Major Basketball Players, Robert G. Lockie, Aleksander Beljic, Spencer Ducheny, Joseph Kammerer, J. Jay Dawes

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 583-596, 2020. There has been limited analyses of DI mid-major male basketball players, and no analyses of relationships between athletic abilities and playing time in this population. The purpose of this study was to (1) describe and compare backcourt and frontcourt players from one mid-major team and (2) determine if there were relationships between playing time (total minutes, total games played, minutes per game) and select tests from the NBA Combine (height, body mass, standing reach, and wingspan; countermovement [VJ] and approach [AppVJ vertical jump], lane agility drill, ¾ court sprint, and 83.91-kg bench …

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High Supervised Resistance Training In Elderly Women: The Role Of Supervision Ratio, Denis Cesar Leite Vieira, Dahan Da Cunha Nascimento, Vitor Tajra, Tatiane Gomes Teixeira, Darlan Lopes De Farias, Ramires Tibana, Alessandro Oliveira Silva, Thiago Santos Rosa, Milton Rocha Moraes, Fabrício Azevedo Voltarelli, James W. Navalta, Jonato Prestes Apr 2020

High Supervised Resistance Training In Elderly Women: The Role Of Supervision Ratio, Denis Cesar Leite Vieira, Dahan Da Cunha Nascimento, Vitor Tajra, Tatiane Gomes Teixeira, Darlan Lopes De Farias, Ramires Tibana, Alessandro Oliveira Silva, Thiago Santos Rosa, Milton Rocha Moraes, Fabrício Azevedo Voltarelli, James W. Navalta, Jonato Prestes

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 597-606, 2020. The objective of this study was to compare the effects of very high supervision (VHS-RT) versus high supervision (HS-RT) ratio resistance training (RT) on irisin, brain-derived neurotrophic factor (BNDF), muscle strength, functional capacity, and body composition in elderly women. Participants performed daily undulating periodized RT over 16 weeks with two different supervision ratios: VHS-RT at 1:2 (supervisor/subject) or HS-RT at 1:5. Serum was used to analyze brain derived neurotropic factor (BDNF) and irisin by enzyme-linked immunosorbent assay (ELISA). Body composition was evaluated by dual-energy X-ray absorptiometry, while functional capacity was evaluated using …

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Acute Ultraviolet Light Exposure And Post-Resistance Exercise Serum Testosterone: A Pilot Study In Older Men, Shayan Emamjomeh, Luis E. Segura, Joshua A. Cotter, Evan E. Schick Apr 2020

Acute Ultraviolet Light Exposure And Post-Resistance Exercise Serum Testosterone: A Pilot Study In Older Men, Shayan Emamjomeh, Luis E. Segura, Joshua A. Cotter, Evan E. Schick

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 607-614, 2020. Testosterone deficiency is linked to a multitude of conditions including depression, sexual dysfunction, and cognitive impairment. Although synthetic testosterone-boosting pharmaceuticals have gained wide use, recent data suggests that vitamin D, ingested orally, may positively impact serum testosterone. Furthermore, evidence tying ultraviolet (UV) light exposure to endogenous vitamin D synthesis presents an intriguing possibility for naturally enhancing serum testosterone. This investigation sought to determine the effect of acute UV light exposure on resistance exercise-induced acute testosteronemia and vitamin D in older men. Six older adult men of varying activity levels (age 62 ± …

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Efficiency Of The Wilks And Ipf Formulas At Comparing Maximal Strength Regardless Of Bodyweight Through Analysis Of The Open Powerlifting Database, Pierre-Marc Ferland, Marc-Olivier Allard, Alain-Steve Comtois Apr 2020

Efficiency Of The Wilks And Ipf Formulas At Comparing Maximal Strength Regardless Of Bodyweight Through Analysis Of The Open Powerlifting Database, Pierre-Marc Ferland, Marc-Olivier Allard, Alain-Steve Comtois

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 567-582, 2020. The purpose of this study was to measure the efficiency of the Wilks and International Powerlifting Federation (IPF) Formulas at comparing powerlifting performance (total) between weight classes of the same sex (men and women) and division (classic and equipped) in order to determine the champion of champions. The Open Powerlifting database was downloaded (June 21st, 2019), filtered (Python) and analyzed (IBM SPSS). Single factor ANOVA revealed that the total (kg) was able to compare 3 out of the 98 weight class comparison possibilities (3.1%), the total ratio was able to compare 5 …

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Comparison Of Post-Activation Potentiating Stimuli On Jump And Sprint Performance, Aaron D. Piper, Dustin P. Joubert, Eric J. Jones, Malcolm T. Whitehead Apr 2020

Comparison Of Post-Activation Potentiating Stimuli On Jump And Sprint Performance, Aaron D. Piper, Dustin P. Joubert, Eric J. Jones, Malcolm T. Whitehead

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 539-553, 2020. Post-activation potentiation (PAP) is a phenomenon characterized by improved muscle performance based on the previous contractile activity of the muscle. The purpose of this study was to determine the effect of different potentiating stimuli on jump and sprint performance in 13 resistance trained, college-aged men and women. After determining back squat 1 repetition max, subjects returned for testing on separate days to complete one of four interventions (dynamic resistance, weighted plyometric, isometric, or control) in a randomized order. A standardized warmup was performed, followed by a baseline countermovement jump (CMJ) and 20m …

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Effect Of Acute High-Intensity Interval Exercise On Whole-Body Fat Oxidation And Subcutaneous Adipose Tissue Cell Signaling In Overweight Women, Hashim Islam, Marysa M.W. Smith, Trisha D. Scribbans, Emma Mccrady, Laura N. Castellani, Matti D. Allen, David C. Wright, Craig A. Simpson, Brendon J. Gurd Apr 2020

Effect Of Acute High-Intensity Interval Exercise On Whole-Body Fat Oxidation And Subcutaneous Adipose Tissue Cell Signaling In Overweight Women, Hashim Islam, Marysa M.W. Smith, Trisha D. Scribbans, Emma Mccrady, Laura N. Castellani, Matti D. Allen, David C. Wright, Craig A. Simpson, Brendon J. Gurd

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 554-566, 2020. Exercise-induced alterations in adipose tissue insulin and/or β-adrenergic signaling may contribute to increases in whole-body fat oxidation following acute exercise. Thus, we examined changes in insulin (Akt, AS160) and β-adrenergic (PKA) signaling proteins in subcutaneous adipose tissue and whole-body fat oxidation in overweight women following acute high-intensity interval exercise (HIIE). Overweight females completed two experimental sessions in a randomized order: 1) control (bed rest) and 2) HIIE (10 x 4 min running intervals at 90% HRmax, 2-min recovery). Subcutaneous abdominal adipose tissue biopsies were obtained from 10 participants before (pre-), …

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The Effects Of Machine-Weight And Free-Weight Resistance Exercise On Hemodynamics And Vascular Function, Erica M. Marshall, Jason C. Parks, Yu Lun Tai, J. Derek Kingsley Apr 2020

The Effects Of Machine-Weight And Free-Weight Resistance Exercise On Hemodynamics And Vascular Function, Erica M. Marshall, Jason C. Parks, Yu Lun Tai, J. Derek Kingsley

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 526-538, 2020. The purpose of this study was to examine hemodynamic and vascular responses between machine-weight and free-weight exercise. Resistance-trained individuals were assigned to a machine-weight (n= 13) or free-weight (n= 15) group. Groups completed two visits consisting of their assigned exercise condition and a control (CON). A 2 x 2 x 3 repeated measures ANOVA was used to test the effects of group across condition and time on the hemodynamic parameters [cardiac output (CO), heart rate (HR), total peripheral resistance (TPR), mean arterial pressure (MAP), and stroke volume (SV)]. …

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Does Infant Temperament And Parental Involvement Influence Infant Cardiac Physiological Regulation?, Mary Richter Apr 2020

Does Infant Temperament And Parental Involvement Influence Infant Cardiac Physiological Regulation?, Mary Richter

Masters Theses & Specialist Projects

The ability to self-regulate allows infants to stay at a baseline level during periods of stress (Porges, 1995). Baseline respiratory sinus arrhythmia (RSA) may be used as an indicator of self-regulation and how well an individual can respond to changes in the environment (Stifter & Corey, 2001). Differences in infant temperament can influence a child’s ability to self-regulate (Dale et al., 2011), but moderators of this relationship have not been thoroughly examined in the literature. Parents who are more involved might have more opportunities to teach children important regulatory strategies (Blandon et al., 2010). The current study examined the association …

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Effects Of Pharmacologically-Induced Sleep Loss On Parental Care In Arctic-Breeding Songbirds, Wesley Payette Apr 2020

Effects Of Pharmacologically-Induced Sleep Loss On Parental Care In Arctic-Breeding Songbirds, Wesley Payette

Masters Theses & Specialist Projects

Sleep loss is well known to impair cognitive function, immunological responses, and general well-being in humans. However, sleep requirements in mammals and birds may vary dramatically, especially with changes in environment. In circumpolar regions with continuous light, sleep requirements may be little, particularly in breeding birds. The effects of sleep loss on several fitness parameters were examined in two species of Arctic-breeding passerine birds: Lapland longspurs (Calcarius lapponicus) and snow buntings (Plectrophenax nivalis). Adult males were implanted during the nestling phase (4 days post-hatch) with osmotic pumps containing an anti-narcolepsy drug, modafinil, to extend the active period for 72 h. …

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Validation Of A Novel Vo2max Protocol, Griffin Green Apr 2020

Validation Of A Novel Vo2max Protocol, Griffin Green

Masters Theses & Specialist Projects

Though there are several to choose from, the Bruce protocol is the most commonly utilized treadmill protocol when assessing maximal oxygen consumption (VO2max). Originally developed for cardiac patients, the Bruce protocol may not be an appropriate treadmill protocol for young or trained individuals with higher levels of cardiorespiratory fitness. The steep grade used often leads localized muscular fatigue, which may cause participants to end the test prior to reaching their true VO2max. Another popular protocol, the Astrand, also utilizes a steep grade, but the speed remains constant. Similar to the Bruce, the Astrand protocol may not prompt a maximal cardiovascular …

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Estimation Of Body Fat Percentage In Jockeys: Implications For A Weight Category Sport, Arthur Dunne, Giles Warrington, Gillian O'Loughlin, Siobhan O'Connor, Michael Harrison, Adrian Mcgoldrick, Jennifer Pugh, Sarahjane Cullen Mar 2020

Estimation Of Body Fat Percentage In Jockeys: Implications For A Weight Category Sport, Arthur Dunne, Giles Warrington, Gillian O'Loughlin, Siobhan O'Connor, Michael Harrison, Adrian Mcgoldrick, Jennifer Pugh, Sarahjane Cullen

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 511-525, 2020. The assessment of body composition in horse racing, a unique weight-restricted sport, provides an important health and performance indicator. The accuracy of skinfold prediction equations at estimating % body fat (% BF) was compared with dual-energy X-ray absorptiometry (DXA) data in a group of professional Irish jockeys (age 27.5 ± 7.7 years). Body composition was assessed in seventy-two male professional jockeys (flat n=35 and national hunt n=37) using standardised guidelines for skinfold thickness at 8 sites and DXA body fat assessment. Hydration status was assessed using urine specific gravity (Usg) to determine …

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Relationships Among Metabolic-Risk, Body Fatness, And Muscular Fitness In Young Obese Latino Children, Justin J. Merrigan, Sina Gallo, Jennifer B. Fields, Robyn Mehlenbeck, Margaret T. Jones Mar 2020

Relationships Among Metabolic-Risk, Body Fatness, And Muscular Fitness In Young Obese Latino Children, Justin J. Merrigan, Sina Gallo, Jennifer B. Fields, Robyn Mehlenbeck, Margaret T. Jones

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 488-500, 2020. Given the high prevalence of obesity in Latino children and potential health risks, the purpose of this study was to: 1) evaluate relationships among metabolic-risk, fitness, and body fatness; 2) determine sex differences in cardio-metabolic risk factors and fitness of obese children of Latino descent. Sixty children (boys, n= 39, 7.8 ± 1.5 years; girls, n= 21, 7.2 ± 1.5 years; body mass index, 97.8 ± 2.5thpercentile) completed assessments of height, weight, and body fat, prior to fasted blood draws and a battery of fitness tests. Cardio-metabolic markers …

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Characterization Of Adult Heart Rate Responses During Recreational Skateboarding At Community Skateparks, Tyler Wiles, Daniel Kellogg, Heather Furr, Jeff A. Nessler, Sean C. Newcomer Mar 2020

Characterization Of Adult Heart Rate Responses During Recreational Skateboarding At Community Skateparks, Tyler Wiles, Daniel Kellogg, Heather Furr, Jeff A. Nessler, Sean C. Newcomer

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 501-510, 2020. Youth participating in recreational skating at community skate parks attain exercise intensities and durations that are comparable with the CDC’s exercise recommendations for cardiovascular fitness for their age group. However, it is currently unclear if adults who skateboard in the same environment also achieve the recommended intensities and durations for cardiovascular fitness. Therefore, the purpose of this study was to test the hypothesis that skateboarding would elicit heart rates and durations consistent with the CDC’s recommendations for cardiovascular fitness in adults. Fifty-five subjects between ages 18-55 were recruited from six community skateparks …

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A Comparison Of Lower Body Power Characteristics Between Collegiate Athletes From Different Competition Levels., Cody A. Stahl, Keston G. Lindsay, J. Bryan Mann, Margaret Hunt, J. Jay Dawes Feb 2020

A Comparison Of Lower Body Power Characteristics Between Collegiate Athletes From Different Competition Levels., Cody A. Stahl, Keston G. Lindsay, J. Bryan Mann, Margaret Hunt, J. Jay Dawes

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 470-479, 2020. The counter-movement jump (CMJ) is frequently utilized by strength and conditioning professionals working with athletes, given its relationship to a multitude of performance variables associated with success in sports. PURPOSE: To examine characteristics of CMJ performance between NAIA and NCAA Division I male and female athletes. METHODS: Archival data for 275 student athletes from two NCAA Division 1 universities (NCAA DI; males = 84, females = 74) and one NAIA university (NAIA; males = 66, females = 51) were utilized for this analysis. The CMJ was performed utilizing a dual single axis …

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Large Inter-Individual Differences In Responses To A Block Of High Intensity Aerobic Interval Training: A Case Series In National-Level Cyclists And Triathletes, Solfrid Bratland-Sanda, Frank G. Pedersen, Marius N. Haave, Jan Helgerud, Øyvind Støren Feb 2020

Large Inter-Individual Differences In Responses To A Block Of High Intensity Aerobic Interval Training: A Case Series In National-Level Cyclists And Triathletes, Solfrid Bratland-Sanda, Frank G. Pedersen, Marius N. Haave, Jan Helgerud, Øyvind Støren

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 480-487, 2020. The aim was to investigate individual responses on VO2maxand performance to a block of high intensity aerobic interval training (HIIT) in national-level endurance athletes. METHODS: National-level cyclists and triathletes (five men and two women, 31 ± 3.3 years, VO2max65.1 ± 3.3 ml·kg-1·min-1) conducted 14 HIIT sessions (4x4 min uphill running at 90-95% maximal heart rate) in nine days during preseason. VO2maxin running and cycling, lactate threshold (LT) in cycling, oxygen cost of cycling (CC), and a cycling time-trial (TT) were …

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Comparisons Of The Metabolic Intensities At Heart Rate, Gas Exchange, And Ventilatory Thresholds, Pasquale J. Succi, Taylor K. Dinyer, M. Travis Byrd, Haley C. Bergstrom Feb 2020

Comparisons Of The Metabolic Intensities At Heart Rate, Gas Exchange, And Ventilatory Thresholds, Pasquale J. Succi, Taylor K. Dinyer, M. Travis Byrd, Haley C. Bergstrom

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 455-469, 2020. PURPOSE: This study compared the O2corresponding to the critical heart rate (CHRO2) and the physical working capacity at the heart rate fatigue threshold (PWChrtO2) to the gas exchange threshold (GET), ventilatory threshold (VT), and respiratory compensation point (RCP). METHODS: Nine runners (mean ±SD, age 23 ±3 years) completed an incremental test on a treadmill to determine O2peak, GET, VT, and RCP. The CHRO2and PWChrtO2were determined from 4 separate constant velocity treadmill runs …

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Measuring Physical Activity Using Triaxial Wrist Worn Polar Activity Trackers: A Systematic Review, André Henriksen, Jonas Johansson, Gunnar Hartvigsen, Sameline Grimsgaard, Laila A. Hopstock Feb 2020

Measuring Physical Activity Using Triaxial Wrist Worn Polar Activity Trackers: A Systematic Review, André Henriksen, Jonas Johansson, Gunnar Hartvigsen, Sameline Grimsgaard, Laila A. Hopstock

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 438-454, 2020. Collecting objective physical activity data from research participants are increasingly done using consumer-based activity trackers. Several validation studies of Polar devices are conducted to date, but no systematic review of the current level of accuracy for these devices exist. The aim of this study is therefore to investigate the accuracy of current wrist-worn Polar devices that equips a triaxial accelerometer to measure physical activity. We conducted a systematic review by searching six databases for validation studies on modern Polar activity trackers. Studies were grouped and examined by tested outcome, i.e. energy expenditure, …

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Step Count Reliability And Validity Of Five Wearable Technology Devices While Walking And Jogging In Both A Free Motion Setting And On A Treadmill, Jeffrey Montes, Richard Tandy, John Young, Szu-Ping Lee, James Navalta Feb 2020

Step Count Reliability And Validity Of Five Wearable Technology Devices While Walking And Jogging In Both A Free Motion Setting And On A Treadmill, Jeffrey Montes, Richard Tandy, John Young, Szu-Ping Lee, James Navalta

International Journal of Exercise Science

International Journal of Exercise Science 13(7): 410-426, 2020. Wearable technology devices are used by millions of people who use daily step counts to promote healthy lifestyles. However, the accuracy of many of these devices has not been determined. The purpose was to determine reliability and validity of the Samsung Gear 2, FitBit Surge, Polar A360, Garmin Vivosmart HR+, and the Leaf Health Tracker when walking and jogging in free motion and treadmill conditions. Forty volunteers completed walking and jogging free motion and treadmill protocols of 5-minute intervals. The devices were worn simultaneously in randomized configurations. The mean of two manual …

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Ground Contact Time Imbalances Strongly Related To Impaired Running Economy, Dustin P. Joubert, Nicholas A. Guerra, Eric J. Jones, Erica G. Knowles, Aaron D. Piper Feb 2020

Ground Contact Time Imbalances Strongly Related To Impaired Running Economy, Dustin P. Joubert, Nicholas A. Guerra, Eric J. Jones, Erica G. Knowles, Aaron D. Piper

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 427-437, 2020. Running economy (RE) is defined as the oxygen consumption (VO2) or caloric unit cost required to move at a specific velocity and is an important performance marker. Ground contact time (GCT) has been associated with RE; however, it has not been established how GCT imbalances between feet impact RE. Purpose: Determine the relationship between cadence, GCT, and GCT imbalances and RE. Methods: 11 NCAA Division I distance runners (7 male) completed a graded exercise test on a treadmill to determine lactate threshold (LT) and VO2max. Body composition was …

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Comparison Of Acute Cardiometabolic Responses In A 7-Minute Body Weight Circuit To 7-Minute Hiit Training Protocol, Cruz Armas, Robert J. Kowalsky, Christopher M. Hearon Feb 2020

Comparison Of Acute Cardiometabolic Responses In A 7-Minute Body Weight Circuit To 7-Minute Hiit Training Protocol, Cruz Armas, Robert J. Kowalsky, Christopher M. Hearon

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 395-409, 2020. To investigate the acute cardiometabolic responses of a 7-minute bodyweight resistance exercise circuit (HICE) compared to a 7-minute high intensity interval training cycle protocol (HIIE). Methods: Twelve apparently healthy and active young adults were enrolled in a randomized crossover study (HICE vsHIIE). The 12 HICE exercises used a 30:5 second exercise to rest ratio, followed by a 3-minute cool-down and was replicated in the HIIE cycle protocol. Following each protocol, subjects were seated for the next hour. Measurements included blood pressure (BP) heart rate, blood glucose and triglycerides, taken prior to …

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Somatosensory Perception Of Running Shoe Mass May Be Influenced By Extended Wearing Time Or Inclusion Of A Personal Reference Shoe, Depending On Testing Method, James G. Saxton, Benjamin R. Mardis, Christopher L. Kliethermes, David S. Senchina Feb 2020

Somatosensory Perception Of Running Shoe Mass May Be Influenced By Extended Wearing Time Or Inclusion Of A Personal Reference Shoe, Depending On Testing Method, James G. Saxton, Benjamin R. Mardis, Christopher L. Kliethermes, David S. Senchina

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 342-357, 2020. Consumers may purchase running shoes on the basis of their masses, yet little is known about shoe mass perceptual abilities. In this multi-part experiment, four groups of twenty-five young adult males (total n= 100) were challenged to gauge the relative masses of five unfamiliar running shoes. The four groups differed by the length of time they were given to wear the shoes (up to 1 minute versus 5 minutes) and whether or not they were able to use their own personal running shoes as a reference. After wearing each individual pair …

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Centesimal Age And Relative Age Effect In Elite Futsal Players, Dayse Dias Da Silva Carraco, Larissa Rafaela Galatti, Marcelo Massa, Irineu Loturco, Cesar Cavinato Cal Abad Feb 2020

Centesimal Age And Relative Age Effect In Elite Futsal Players, Dayse Dias Da Silva Carraco, Larissa Rafaela Galatti, Marcelo Massa, Irineu Loturco, Cesar Cavinato Cal Abad

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 329-341, 2020. To investigate centesimal age (CA) and relative age effect (RAE) in elite male futsal players their date of birth and court-position were accessed through the official FIFA website. The absolute and relative frequency distributions of player births were quantified by quartiles and semesters. The two-way ANOVA and the Chi-Square analysis were applied to check for possible differences. The results showed a mean CA of 27.76 ± 4.11 years with no differences for both playing positions and competitions. In addition, no significant differences were found between quartiles or between semesters. The results suggest …

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Outdoor Time Is Not Associated With Metabolically Healthy Overweight And Obesity Phenotype In Canadian Children Aged 6-14 Years, Brittany Rioux, Neeru Gupta, Danielle Bouchard, James Dunbar, Martin Senechal Feb 2020

Outdoor Time Is Not Associated With Metabolically Healthy Overweight And Obesity Phenotype In Canadian Children Aged 6-14 Years, Brittany Rioux, Neeru Gupta, Danielle Bouchard, James Dunbar, Martin Senechal

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 383-394, 2020. A large proportion of children living with obesity have favorable cardiometabolic profiles despite their adiposity levels, who are referred to as metabolically healthy overweight or obese (MHO). However, the contribution of active outdoor time to the MHO phenotype is unknown. The purposeof this study was to investigate the association between outdoor time and moderate-to-vigorous physical activity (MVPA) with the MHO phenotype. A cross-sectional analysis of overweight/obese children aged 6-14 (n= 386) from the Canadian Health Measures Survey was performed. Outdoor time was self-reported using five questions in relation to …

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Heart Rate Responses During Simulated Fire Ground Scenarios Among Full-Time Firefighters, Quincy R. Johnson, Jonathan Goatcher, Cody L. Diehl, Robert G. Lockie, Robin Marc Orr, Brent Alvar, Doug Smith, J. Jay Dawes Feb 2020

Heart Rate Responses During Simulated Fire Ground Scenarios Among Full-Time Firefighters, Quincy R. Johnson, Jonathan Goatcher, Cody L. Diehl, Robert G. Lockie, Robin Marc Orr, Brent Alvar, Doug Smith, J. Jay Dawes

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 374-382, 2020. Simulated fire ground scenarios (SFGS) provide firefighters with an opportunity to maintain skills, receive feedback, and optimize performance. Although there is extensive research on heart rate (HR) changes in the firefighter population, few examine the differences between positions. Firefighters are primarily responsible for fire suppression and control (23), officers for emergency operations and organizational management, paramedics for providing on-scene emergency medical care, and drivers are responsible for driving the fire apparatus. Utilizing HR analysis to quantify the physical demands of SFGS among firefighting crews by position. Sixty-seven male (age: 38.97 ± 9.17; …

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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 Feb 2020

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

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 366-373, 2020. 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 …

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Metabolic Costs Of A 58-Minute Multi-Intensity Exercise Session With And Without Music And Cueing, Cecilia Guerrero, Robbin Tran, Elizabeth Gutierrez, Candice Campbell, Jade Rodgers, Michelle Alencar, Jan Schroeder Feb 2020

Metabolic Costs Of A 58-Minute Multi-Intensity Exercise Session With And Without Music And Cueing, Cecilia Guerrero, Robbin Tran, Elizabeth Gutierrez, Candice Campbell, Jade Rodgers, Michelle Alencar, Jan Schroeder

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 358-365, 2020. It is unclear if the presence or absence of music and cueing influence total energy expenditure (TEE) during a multi-intensity exercise program. The purpose of this study was to determine the difference between TEE with or without music and cueing during a 58-minute exercise session using heart rate estimation (HRe) and indirect calorimetry (IC). Using a randomized crossover design, 22 participants (6 males; 16 females; 27.64 ± 10.33 yrs.) were randomized into two groups (Group A = 11; Group B = 11). All participants performed the same 58-minute exercise session under two …

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Pre- And Post-Activity Stretching Practices Of Collegiate Soccer Coaches In The United States, Lawrence W. Judge, Jason Avedesian, David M. Bellar, Donald L. Hoover, Bruce Craig, Jason Langley, Nicholas Nordmann, Makenzie A. Schoeff, Clark D. Dickin Feb 2020

Pre- And Post-Activity Stretching Practices Of Collegiate Soccer Coaches In The United States, Lawrence W. Judge, Jason Avedesian, David M. Bellar, Donald L. Hoover, Bruce Craig, Jason Langley, Nicholas Nordmann, Makenzie A. Schoeff, Clark D. Dickin

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 260-272, 2020. Current pre- and post-activity stretching guidelines are designed to optimize performance and reduce injury risk. However, it is unclear whether soccer coaches adhere to these recommendations. The purpose of this study was to determine if collegiate soccer coaches’ perceptions and practices align with current scientific recommendations. A total of 781 questionnaires were electronically distributed to soccer coaches from NCAA Division I and III universities.The questionnaire obtained demographic, professional, and educational information, as well as stretching practices. Statistical analysis consisted of computing frequency counts and means where applicable. Pearson's Chi-square tests were performed …

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The Effect Of Static Stretching, Mini-Band Warm-Ups, Medicine-Ball Warm-Ups, And A Light Jogging Warm-Up On Common Athletic Ability Tests, Bryan Christensen, Colin W. Bond, Ryan Napoli, Kelly Lopez, Jason Miller, Kyle J. Hackney Feb 2020

The Effect Of Static Stretching, Mini-Band Warm-Ups, Medicine-Ball Warm-Ups, And A Light Jogging Warm-Up On Common Athletic Ability Tests, Bryan Christensen, Colin W. Bond, Ryan Napoli, Kelly Lopez, Jason Miller, Kyle J. Hackney

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 298-311, 2020. Proper warm-up is important for facilitating peak athletic performance and reducing injury risk; yet, warm-up procedures vary considerably amongst coaches and athletes. The purpose of this study was to assess the effect of a static stretching, medicine-ball, and mini-band warm-ups relative to a light jogging warm-up only on athletic ability test performance. It was hypothesized that static stretching would negatively affect performance, while medicine-ball and mini-band warm-ups would positively affect performance relative to light jogging only. Twelve female collegiate soccer players (19.3 ± 1.2y, 65.2 ± 7.5kg, 1.67 ± 0.07m) participated in …

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The Relationship Between Physical Characteristics And Maximal Strength In Men Practicing The Back Squat, The Bench Press And The Deadlift, Pierre-Marc Ferland, Alexander C. Pollock, Ryan Swope, Mark Ryan, Michael Reeder, Kristin J. Heumann, Alain-Steve Comtois Feb 2020

The Relationship Between Physical Characteristics And Maximal Strength In Men Practicing The Back Squat, The Bench Press And The Deadlift, Pierre-Marc Ferland, Alexander C. Pollock, Ryan Swope, Mark Ryan, Michael Reeder, Kristin J. Heumann, Alain-Steve Comtois

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 281-297, 2020. This study was designed to quantify the relationships between physical characteristics and maximal strength in the back squat, the bench press and the deadlift on powerlifters and football players.Eighteen male junior drug-tested classic powerlifters and seventeen NCAA Division II American football players’ anthropometric measurements were taken to compare them with maximal strength results from either a powerlifting meet or testing from their supervised strength and conditioning program. Pearson’s bivariate correlations analysis revealed (statistical significance was set at p

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Accuracy Assessment Of A Gps Device For Maximum Sprint Speed, Kathryn Alphin, Olivia Sisson, Brynn L. Hudgins, Catherine D. Noonan, Jennifer A. Bunn Feb 2020

Accuracy Assessment Of A Gps Device For Maximum Sprint Speed, Kathryn Alphin, Olivia Sisson, Brynn L. Hudgins, Catherine D. Noonan, Jennifer A. Bunn

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 273-280, 2020. Global positioning system (GPS) technology can capture maximum sprint speed (MSS) using fewer resources than electronic timing gates (ETG). Yet,errors with GPS technology are typically 1.01 km∙hr-1for instantaneous velocity, potentially limiting GPS accuracy. The purpose of this study was to compare MSS values obtained from GPS technology to those obtained from ETG. The MSS of 24 female athletes was determined using two tests that both began with a 20-m fly-in followed by: 1) 80-m maximal sprint with ETG placed at the start line, 30 m, 60 m, and 80 …

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