Open Access. Powered by Scholars. Published by Universities.®

Physiology Commons™

Open Access. Powered by Scholars. Published by Universities.®

Western Kentucky University

Discipline
Keyword
Publication Year
Publication
Publication Type

Articles 661 - 690 of 2299

Full-Text Articles in Physiology

A Comparison Of V̇O2, And Muscle And Prefrontal Cortex Tissue Oxygen Extraction Between Short And Long-Term Aerobically Trained Men Aged 40 - 60 Years, Gavin Buzza Jul 2020

A Comparison Of V̇O2, And Muscle And Prefrontal Cortex Tissue Oxygen Extraction Between Short And Long-Term Aerobically Trained Men Aged 40 - 60 Years, Gavin Buzza

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 964-978, 2020. This study was designed to compare systemic O2 utilization (V̇O2), and changes in tissue O2 extraction [deoxyhemoglobin (ΔHHb)] in the vastus lateralis (VL), gastrocnemius (GAST) and pre-frontal cortex (PFC) tissue; between aerobically short-term trained (STT) and long-term trained (LTT) older men (40 - 60 yr) who were matched for current training load. On separate occasions, 14 STT and 14 LTT participants completed ramp incremental (RI) and square-wave constant load (SWCL) tests on a cycle ergometer. In LTT compared to STT; (i) V̇O2 was higher during the RI …

Go to article

Physiological And Biomechanical Differences Between Seated And Standing Uphill Cycling, Quint N. Berkemeier, Brent W. Alumbaugh, Trevor Gillum, Jared Coburn, Jong-Kyung Kim, Michael Reeder, Chelsie A. Fechtner, Gerald A. Smith Jul 2020

Physiological And Biomechanical Differences Between Seated And Standing Uphill Cycling, Quint N. Berkemeier, Brent W. Alumbaugh, Trevor Gillum, Jared Coburn, Jong-Kyung Kim, Michael Reeder, Chelsie A. Fechtner, Gerald A. Smith

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 996-1011, 2020. Despite differences in economy, cyclists climb in seated and standing positions. Prompted by gaps in research, we compared VO2 and heart rate (HR) (Study 1), muscle activation (Study 2) and breathing and pedaling entrainment (Study 3). METHODS: Subjects rode their bicycles on a treadmill in seated and standing positions. In Study 1, VO2 and HR of four male cyclists (21.3 ± 1.7 yrs; 69.1 ± 6 ml/kg/min) were collected, alternating positions every 5 minutes for 20 minutes (8 mph, 8% grade). In Study 2, muscle activations of eight male cyclists …

Go to article

Effects Of Combined Power Band Resistance Training On Sprint Speed, Agility, Vertical Jump Height And Strength In Collegiate Soccer Players, Edgar T. Katushabe, Mark Kramer Jun 2020

Effects Of Combined Power Band Resistance Training On Sprint Speed, Agility, Vertical Jump Height And Strength In Collegiate Soccer Players, Edgar T. Katushabe, Mark Kramer

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 950-963, 2020. Soccer involves explosive physical actions requiring strength, power, and agility for optimal performance. Such attributes may be trained several ways, of which power-band resistance training has received limited attention regarding the potential for performance improvement in soccer players. This study serves to determine the effect of power-band resistance training on 1-repetition maximal (1RM) strength, speed, standing vertical jump (SVJ) height, and agility of collegiate soccer players. Seventeen male players (age: 20.47 ± 1.85 years, height: 1.77 ± 0.08 m, mass: 70.49 ± 4.15 kg) were matched and randomly allocated into either a …

Go to article

A Single Bout Of Foam Rolling Increases Flexibility Of The Hip Adductor Muscles Without Compromising Strength, Gavin Connolly, Roger L. Hammer, Joseph A. Powell, Paul L. O'Connor Jun 2020

A Single Bout Of Foam Rolling Increases Flexibility Of The Hip Adductor Muscles Without Compromising Strength, Gavin Connolly, Roger L. Hammer, Joseph A. Powell, Paul L. O'Connor

International Journal of Exercise Science

International Journal of Exercise Science 13(7): 938-949, 2020. Foam rolling (FR) is a method of self-myofascial release (SMR) implemented to reduce tension in underlying soft tissue, leading to increased range of motion (ROM). The hip adductor muscles of the groin are commonly less flexible and often a site for soft tissue injuries. Limited research has been done to determine the most effective flexibility exercises to increase ROM in the groin muscles prior to exercise without comprising strength. The purpose was to determine the effect of an acute bout of FR on passive groin flexibility and strength. Randomized crossover study with …

Go to article

Examining Grit Like Qualities In Nfl Qbs, John Beck, Mark Debeliso Jun 2020

Examining Grit Like Qualities In Nfl Qbs, John Beck, Mark Debeliso

International Journal of Exercise Science

International Journal of Exercise Science 13(5): 912-923, 2020. In order to excel in the National Football League (NFL) it would seem reasonable to assume an athlete has grit which consists of the constructs of consistency of interest and perseverance of effort. Grit-like qualities such as endurance, urgency and intensity, self-confidence, need for encouragement, and self-criticality may be of particular value for the athlete playing the Quarterback (QB) position. The purpose of the study was to assess the 5 grit-like constructs of endurance, urgency and intensity, self-confidence, need for encouragement, and self-criticality among NFL QBs. The Flippen ProfileTM assessment was …

Go to article

Case Report Of A Remote Ischemic Preconditioning Intervention During Aerobic Exercise In A 44-Year-Old Amateur Triathlete Male With A History Of Acute Myocardial Infarction, Maxime Caru, François Lalonde, Hugo Gravel, Chantal Daigle, Daniel Curnier Jun 2020

Case Report Of A Remote Ischemic Preconditioning Intervention During Aerobic Exercise In A 44-Year-Old Amateur Triathlete Male With A History Of Acute Myocardial Infarction, Maxime Caru, François Lalonde, Hugo Gravel, Chantal Daigle, Daniel Curnier

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 924-937, 2020. Over the years, exercise has become increasingly important in patients with acute myocardial infarction (AMI). However, AMI patients need to be closely monitored since they maintain cardiovascular disease risks, such as ventricular repolarization abnormalities in electrocardiograms during exercise and rest. A recent study showed the need to focus on the different potential mechanisms and the applicability of remote ischemic preconditioning (RIPC) for cardiac patients engaged in exercise rehabilitation. This is the first case report that explores the effectiveness of an RIPC intervention in a 44-year-old amateur triathlete male with a history of …

Go to article

The Effects Of Walking With A Load In The Heat On Physiological Responses Among Military Reserve Female Cadets, Nurul Atikah Shuhada, Marilyn L.Y. Ong, Chee Keong Chen Jun 2020

The Effects Of Walking With A Load In The Heat On Physiological Responses Among Military Reserve Female Cadets, Nurul Atikah Shuhada, Marilyn L.Y. Ong, Chee Keong Chen

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 900-911, 2020. This study aimed to investigate the effects of walking in a hot and humid environment while wearing a combat suit with a load on physiological responses among the Malaysian Military Reserve Officer Training Unit (ROTU) female cadets. Eight healthy female ROTU cadets (age: 21.3 ± 1.0 years old; height: 156.3 ± 4.9 cm; weight: 55.6 ± 7.5 kg) participated in this randomised, crossover trial. They walked for 1 h on a treadmill at 3 km.h-1 while carrying either 8.2 kg load (WL) or without load (WOL) in a room maintained at …

Go to article

Donning A Novel Lower-Limb Restrictive Compression Garment During Training Augments Muscle Power And Strength, Jaxon T. Baum, Robert P. Carter, Eric V. Neufeld, Brett A. Dolezal Jun 2020

Donning A Novel Lower-Limb Restrictive Compression Garment During Training Augments Muscle Power And Strength, Jaxon T. Baum, Robert P. Carter, Eric V. Neufeld, Brett A. Dolezal

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 890-899, 2020. The popularity of graduated compression garments (GCG) in sport and exercise is largely driven by the abundance of anecdotal claims suggesting their efficacy. A new line of compression apparel, restrictive compression garments (RCG), integrate novel resistance technology into lower-limb compression garments designed to provide variable resistance to movement. This study aimed to investigate the effect of donning an RCG during a 4-week training program on selected performance variables. Twelve college-aged males were recruited for four weeks of lower-body strength-power resistance training. Participants were randomized 1:1 and blinded to (i) an intervention group …

Go to article

Effects Of Horizontal And Incline Bench Press On Neuromuscular Adaptations In Untrained Young Men, Suene F. N. Chaves, Valdinar A. Rocha-Júnior, Irismar G. A. Encarnação, Hugo C. Martins-Costa, Eduardo D. S. Freitas, Daniel B. Coelho, Frederico S. C. Franco, Jeremy P. Loenneke, Martim Bottaro, João B. Ferreira-Júnior Jun 2020

Effects Of Horizontal And Incline Bench Press On Neuromuscular Adaptations In Untrained Young Men, Suene F. N. Chaves, Valdinar A. Rocha-Júnior, Irismar G. A. Encarnação, Hugo C. Martins-Costa, Eduardo D. S. Freitas, Daniel B. Coelho, Frederico S. C. Franco, Jeremy P. Loenneke, Martim Bottaro, João B. Ferreira-Júnior

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 859-872, 2020. The aim of the current study was to investigate the effects of horizontal and incline bench press as well as the combination of both exercises on neuromuscular adaptation in untrained young men. Forty-seven untrained men were randomly assigned to one of the three groups: 1) a horizontal bench press group (n= 15), 2) an incline bench press group (n= 15), and 3) a combination (horizontal + incline) group (n= 17). Training was conducted once a week for eight weeks, with equalized number of sets among groups. Muscle thickness, isometric strength and electromyography …

Go to article

The Influence Of Sport-Related Concussion On Lower Extremity Injury Risk: A Review Of Current Return-To-Play Practices And Clinical Implications, Jason M. Avedesian, Tracey Covassin, Janet S. Dufek Jun 2020

The Influence Of Sport-Related Concussion On Lower Extremity Injury Risk: A Review Of Current Return-To-Play Practices And Clinical Implications, Jason M. Avedesian, Tracey Covassin, Janet S. Dufek

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 873-889, 2020. Sport-related concussions (SRCs) are now classified as a major health concern affecting athletes across all sporting levels, with recent evidence suggesting upwards of 3.8 million SRCs occur each year. Multiple injury surveillance datasets have recently determined that athletes post-SRC, compared to non-concussed counterparts, are at greater risk for lower extremity (LE) injury beyond the resolution of traditional SRC assessment batteries. However, it is presently uncertain if common clinical practices (symptom reporting, neuropsychological (NP) examination, and static postural control analysis) can determine athletes at risk for LE injury following an SRC. A comprehensive …

Go to article

The Effect Of Timing And Type Of Exercise On The Quality Of Sleep In Trained Individuals, Victoria Burgess, Jose Antonio, Helen Bland, Ronald Wagner, Jaime Tartar, Bridget Melton Jun 2020

The Effect Of Timing And Type Of Exercise On The Quality Of Sleep In Trained Individuals, Victoria Burgess, Jose Antonio, Helen Bland, Ronald Wagner, Jaime Tartar, Bridget Melton

International Journal of Exercise Science

International Journal of Exercise Science 13(7): 837-858, 2020. Sleep is an extremely important component for overall health and for a well-balanced training program. Recent studies have highlighted the interaction between sleep, recovery, and performance in elite and recreational athletes alike. Exercise has been known to affect the quality of sleep, nevertheless the impact is not well understood in the current research, particularly the effects of exercise timing and intensity on sleep quality. The purpose of this study was to understand if exercise timing and intensity significantly impact sleep quality among recreational exercisers. The participants involved were recreational exercisers who were …

Go to article

Impact Of Hydration Status On Jump Performance In Recreationally Trained Males, Paul T. Donahue, Samuel Wilson, Charles Williams, Christopher M. Hill, Melinda Valiant, John Garner Jun 2020

Impact Of Hydration Status On Jump Performance In Recreationally Trained Males, Paul T. Donahue, Samuel Wilson, Charles Williams, Christopher M. Hill, Melinda Valiant, John Garner

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 826-836, 2020. The vertical jump is commonly used as a means of evaluating athlete readiness. Athletes have been shown to arrive to training and competition in a hypohydrated state. Thus, this investigation sought to examine the impact of hydration status on both countermovement (CMJ) and squat jump (SJ) performance. Twenty-five recreationally trained males completed three CMJ and SJ in a euhydrated, hypohydrated and control condition. Conditions were separated by a minimum of 24 hours. Hydration status was assessed using urine specific gravity. Jump performance was evaluated using both kinematic and kinetic data obtained from …

Go to article

Evaluation Of Repetitive Jumping Intensity On The Digi-Jump Machine, T. Scott Lyons, James W. Navalta, Whitley J. Stone, Scott W. Arnett, Mark A. Schafer, Laura Igaune May 2020

Evaluation Of Repetitive Jumping Intensity On The Digi-Jump Machine, T. Scott Lyons, James W. Navalta, Whitley J. Stone, Scott W. Arnett, Mark A. Schafer, Laura Igaune

International Journal of Exercise Science

Cardiorespiratory endurance is an important element of aerobic fitness, particularly in weight management and reducing risk for cardiovascular disease. While there are numerous options for aerobic exercise, rope jumping is often overlooked. In addition to regular exercise and a healthy diet, the American Heart Association strongly recommends rope jumping. The first purpose of this study was to determine the steady state metabolic cost of repetitive jumping on the Digi-Jump machine to evaluate whether exercise on this device is more or less strenuous than similar exercise with a jump rope, as demonstrated in previous literature. A second purpose was to determine …

Go to article

Motor Behavior Literature Fails To Translate: A Preliminary Investigation Into Coaching And Focus Of Attention In Recreational Distance Runners., Masahiro Yamada, Jed Diekfuss, Louisa Raisbeck May 2020

Motor Behavior Literature Fails To Translate: A Preliminary Investigation Into Coaching And Focus Of Attention In Recreational Distance Runners., Masahiro Yamada, Jed Diekfuss, Louisa Raisbeck

International Journal of Exercise Science

International Journal of Exercise Science 13(5): 789-801, 2020. The benefits of using an external focus relative to an internal focus for endurance activities are well documented. However, literature has revealed that internally focused instructions are predominantly adopted in the field, and existing data are limited to highly-skilled level populations. Moreover, athletes’ focus of attention during fatigue invoking activities is unknown. The purpose of the current study was to examine what type of feedback and instructions experienced recreational individuals receive and their self-adopted focus of attention when fatigued. Distance runners answered a questionnaire related to instruction and feedback from coaches and …

Go to article

Internal Training Load Measures During A Competitive Season In Collegiate Women Lacrosse Athletes, Jennifer Fields, Michael Esco, Justin Merrigan, Jason White, Margaret T. Jones May 2020

Internal Training Load Measures During A Competitive Season In Collegiate Women Lacrosse Athletes, Jennifer Fields, Michael Esco, Justin Merrigan, Jason White, Margaret T. Jones

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 778-788, 2020. Monitoring internal load provides useful and non-invasive markers of training stress and adaptation. However, the relationship between internal load measures across a competitive window remains inconclusive and limited. The purpose of this study was to report various internal load measures, as well as their relationship, across a season in Division I women lacrosse athletes (n = 20). Ultra-short natural logarithm of the root mean square of successive differences (lnRMSSD), salivary testosterone, cortisol, the testosterone:cortisol ratio, and self-reported measures of fatigue and recovery were collected weekly for 13 weeks. Means ± SD …

Go to article

Acute Physiologic Effects Of Performing Yoga In The Heat On Energy Expenditure, Range Of Motion, And Inflammatory Biomarkers, Bradley Lambert, Katherine Miller, Domenica Delgado, Kalyan Chaliki, Joshua Lee, Guillermo Bauza, Francesca Taraballi, David Dong, Ennio Tasciotti, Joshua Harris, Patrick Mcculloch May 2020

Acute Physiologic Effects Of Performing Yoga In The Heat On Energy Expenditure, Range Of Motion, And Inflammatory Biomarkers, Bradley Lambert, Katherine Miller, Domenica Delgado, Kalyan Chaliki, Joshua Lee, Guillermo Bauza, Francesca Taraballi, David Dong, Ennio Tasciotti, Joshua Harris, Patrick Mcculloch

International Journal of Exercise Science

International Journal of Exercise Science 13(3): 802-817, 2020. Performing yoga in a heated environment (HY) is a popular exercise mode purported to improve range of motion (ROM), body composition, and aerobic fitness. The purpose of this investigation was to compare a session of HY to room temperature yoga (RTY) with regards to ROM, oxygen consumption, caloric expenditure, and biomarkers of acute stress and inflammation. Sixteen experienced yoga practitioners (F14, M2; 40 ± 11yr; 22.6 ± 1.8 kg/m2) completed a 1-hour standardized Bikram sequence in HY (105⁰F, 40⁰C) and RTY (74⁰F, 23.3⁰C) conditions (order of conditions randomized, humidity standardized …

Go to article

Preparation For An Half-Ironmantm Triathlon Amongst Amateur Athlete: Finishing Rate And Physiological Adaptation., Francois Lalonde, Sarah-Maude Martin, Vincent Gosselin Boucher, Marc Gosselin, Mélanie Roch, Alain Steve Comtois May 2020

Preparation For An Half-Ironmantm Triathlon Amongst Amateur Athlete: Finishing Rate And Physiological Adaptation., Francois Lalonde, Sarah-Maude Martin, Vincent Gosselin Boucher, Marc Gosselin, Mélanie Roch, Alain Steve Comtois

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 766-777, 2020. Long distance triathlon has gained in popularity amongst the general population. Coaches establish training programs based upon their knowledge, personal experience and on current training principles. The goal was to observe the effect of a triathlon training program for a half Ironman event in neophyte amateur athletes. A specific triathlon training program was followed from February to June 2016 by a group preparing for their first half ironman. Out of the 32 participants (19 Males and 13 Females; mean age of 39 ± 9.9 years old; body weight of 72.7 ± 13.4 …

Go to article

Acute Capsaicin Analog Supplementation Improves 400 M And 3000 M Running Time-Trial Performance, Lasaro Albuquerque Costa, Marcelo Conrado De Freitas, Jason Cholewa, Fabio Nakamura, Valeria Panissa, Vilton Emanoel Lopes De Moura E Silva Vilton Emanoel Lopes De Moura E Silva, Alcione Maria B Sá, Priscila A. Queiroz, Sergio Luis Galan, Marcos Antonio P Santos, Nelo E. Zanchi, Fabio Santos Lira, Fabricio Eduardo Rossi May 2020

Acute Capsaicin Analog Supplementation Improves 400 M And 3000 M Running Time-Trial Performance, Lasaro Albuquerque Costa, Marcelo Conrado De Freitas, Jason Cholewa, Fabio Nakamura, Valeria Panissa, Vilton Emanoel Lopes De Moura E Silva Vilton Emanoel Lopes De Moura E Silva, Alcione Maria B Sá, Priscila A. Queiroz, Sergio Luis Galan, Marcos Antonio P Santos, Nelo E. Zanchi, Fabio Santos Lira, Fabricio Eduardo Rossi

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 755-765, 2020. Objectives: Performance in running-based sport depends on the ability to perform repetitive high intensity muscle contractions. Previous studies have shown that capsaicin analog (CAP) (i.e. Capsiate) supplementation may improve this performance. The purpose of this study was to investigate the acute effect of CAP supplementation on short (400 m) and middle distance (3000 m) running time-trial performance, maximum heart rate (HR), and rate of perceived exertion (RPE). Methods: Twelve physically active men completed four randomized, double-blind trials: CAP condition (12 mg) or a placebo condition. Forty-five minutes after supplementation, the participants performed …

Go to article

Muscle Oxygen Demands Of The Vastus Lateralis In Back And Front Squats, Patrick R. Davis, John P. Yakel, Devin J.F. Anderson May 2020

Muscle Oxygen Demands Of The Vastus Lateralis In Back And Front Squats, Patrick R. Davis, John P. Yakel, Devin J.F. Anderson

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 734-743, 2020. In resistance training squats are often used to strengthen the muscles of the lower extremities and core muscles. There are two common forms of squats that use a barbell for loading, the back squat and the front squat. The technique and loading of each squat differ markedly. However, the energetic demands on the muscle between the two forms are not well understood. The purpose of this study was to investigate the difference in energy demands between front and back squats by measuring the change in skeletal muscle oxygen saturation (SmO2) …

Go to article

Muscle Sentry® Has No Effect On Total Work Performed And Estimated Mvo2 After High Intensity Short Duration Resistance Training, Junhai Xu, Tyler M. Farney, Arnold G. Nelson May 2020

Muscle Sentry® Has No Effect On Total Work Performed And Estimated Mvo2 After High Intensity Short Duration Resistance Training, Junhai Xu, Tyler M. Farney, Arnold G. Nelson

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 744-754, 2020. Supplements are widely used in recreational and professional participants; however, their claimed benefits are hardly to test. This study compared the total lifted numbers and post-exercise estimated MVO2 while subjects were treated with either Muscle Sentry® (MS) or placebo (PL), in a 7-day washout period. Participants (11 women, 10 men, 20-24 years) performed 3 sets to failure chest and leg press exercises at 8 RM with 2 min rest between sets. Each exercise was performed four times (2 × MS, 2 × PL) at the same time of the day separated …

Go to article

Comparison Of High-Volume And High-Intensity Upper Body Resistance Training On Acute Neuromuscular Performance And Ratings Of Perceived Exertion, Bruno Victor Correia Da Silva, Daniella Bertulucci Terra Branco, Bernardo Neme Ide, Moacir Marocolo, Hiago Leandro R De Souza, Rhaí André Arriel E Oliveira, Dustin Jay Oranchuk, Gustavo R. Mota Apr 2020

Comparison Of High-Volume And High-Intensity Upper Body Resistance Training On Acute Neuromuscular Performance And Ratings Of Perceived Exertion, Bruno Victor Correia Da Silva, Daniella Bertulucci Terra Branco, Bernardo Neme Ide, Moacir Marocolo, Hiago Leandro R De Souza, Rhaí André Arriel E Oliveira, Dustin Jay Oranchuk, Gustavo R. Mota

International Journal of Exercise Science

International Journal of Exercise Science 13(1): 723-733, 2020. The assessment of neuromuscular fatigue is important for minimizing the risks of nonfunctional overreaching, and monitoring training loads has rapidly grown in recent years. The objective of the study was to compare the acute upper body performance and rating of perceived exertion (RPE) responses to high-volume (HV) and high-intensity (HI) resistance-training loads. Sixteen young resistance-trained men (4 repetition maximum [RM] bench press = 105.8 ± 15.9 kg) were divided into two groups of eight subjects each that performed a HI (3 sets of 4RM with 180 s of rest), and a HV …

Go to article

Determining Maod Using A Single Exhaustive Severe Intensity Test, Jose R. Valenzuela, Andrea E. Riojas, Brian K. Mcfarlin, Jakob L. Vingren, David W. Hill Apr 2020

Determining Maod Using A Single Exhaustive Severe Intensity Test, Jose R. Valenzuela, Andrea E. Riojas, Brian K. Mcfarlin, Jakob L. Vingren, David W. Hill

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 702-713, 2020. Maximal accumulated oxygen deficit (MAOD) provides a measure of anaerobic capacity. However, its measurement is a time-consuming process. The purpose of this study was to evaluate a measure of anaerobic capacity that avoids contentious assumptions and demands of the MAOD method. Twelve women and eight men volunteered for the study and completed cycle ergometer tests that resulted in exhaustion after ~4 min and ~8 min. In each test, anaerobic capacity was determined as (i) the MAOD and (ii) the sum of the phosphocreatine and glycolytic contributions (PCr+glycolysis). MAOD was determined …

Go to article

A Comparison Of Muscle Activation Among The Front Squat, Overhead Squat, Back Extension And Plank, David Bautista, Dustin Durke, Joshua A. Cotter, Kurt A. Escobar, Evan E. Schick Apr 2020

A Comparison Of Muscle Activation Among The Front Squat, Overhead Squat, Back Extension And Plank, David Bautista, Dustin Durke, Joshua A. Cotter, Kurt A. Escobar, Evan E. Schick

International Journal of Exercise Science

International Journal of Exercise Science 13(1): 714-722, 2020. The purpose of this study was to compare the muscle activation of the scapula, leg, and trunk among the front squat (FS), overhead squat (OHS), back extension (BE) and plank (PL). Seven recreationally trained men (age: 28 ± 3.6 years, body mass: 92 ± 26.1 kg, height: 175 ± 5.3 cm, 3-RM front squat test: 125 ± 49.8 kg, 3-RM overhead squat test: 91 ± 15.5 kg) participated in this within-subject crossover design. Two isometric exercises (plank and Biering-Sorenson back extension) were also included for trunk musculature comparisons. Neuromuscular activitation of the …

Go to article

Perceived And Heart Rate-Based Intensities During Self-Paced Walking: Magnitudes And Comparison, Jennah Flairty, Cory Scheadler Apr 2020

Perceived And Heart Rate-Based Intensities During Self-Paced Walking: Magnitudes And Comparison, Jennah Flairty, Cory Scheadler

International Journal of Exercise Science

International Journal of Exercise Science 13(5): 677-688, 2020. There is limited research on self-paced walking and whether healthy individuals reach perceived exertion- (RPE) and/or heart rate- (HR) based moderate intensities. Study purpose was to determine if achieved RPE and HR intensities during a self-paced walk are of equivalent magnitude and whether they reach the recommended moderate-intensity. Thirty participants completed a 15-minute self-paced walk. RPE and HR were measured every two minutes; each measure was ranked by intensity. Wilcoxon matched pairs test revealed no significant difference between the mean ranked RPE and %HRmax (2.4 ± 0.9, 2.3 ± 1.0, respectively, p …

Go to article

The Validity And Reliability Of The Mi Band Wearable Device For Measuring Steps And Heart Rate, Chloe Paradiso, Francisco Colino, Sam Liu Apr 2020

The Validity And Reliability Of The Mi Band Wearable Device For Measuring Steps And Heart Rate, Chloe Paradiso, Francisco Colino, Sam Liu

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 689-701, 2020. The study objectives were to 1) evaluate the criterion validity and reliability of the Mi Band 2 wearable activity monitor to measure steps during a six-minute walk test (6MWT), a treadmill walking test at various speed (1.28 km/h, 1.92 km/h, and 2.88 km/h) and a stair climbing test; 2) assess the validity and reliability of the monitor to measure heart rate during rest and exercise. Fourteen participants (females: n = 8; mean age ± SD: 23 ± 4.2) completed the study. The mean body mass index was 22 ± 3.6. The majority …

Go to article

The Effect Of Beetroot Supplementation On High-Intensity Functional Training Performance, Sean Collins, Danielle Kearns Apr 2020

The Effect Of Beetroot Supplementation On High-Intensity Functional Training Performance, Sean Collins, Danielle Kearns

International Journal of Exercise Science

International Journal of Exercise Science 13(2): 667-676, 2020. Nitrate supplementation (NO3-) has been shown to improve athletic performance for short-duration, vigorous activity, as well as long-duration, aerobic activity. The purpose was to explore the effects of beetroot supplementation (BR) on high-intensity functional training (HIFT) performance. Twenty-four HIFT participants (25 ± 6.5 years, 175.17 ± 8.1 cm, 84.94 ± 12.09 kg), who attended HIFT classes at least 3 days per week for the past 3 months, performed a benchmark performance test (5 rounds of a 400-m run followed by 15 overhead squats with a 95-lb (for males)/65-lb (for …

Go to article

Influence Of Fatigue On Planned Agility Performance In Soccer Players., Sofia K. Jakobsson, Tal Amasay Apr 2020

Influence Of Fatigue On Planned Agility Performance In Soccer Players., Sofia K. Jakobsson, Tal Amasay

International Journal of Exercise Science

International Journal of Exercise Science 13(1): 656-666, 2020. We investigated the acute fatiguing effects of sprint interval training (SIT) on change of direction performance in male and female soccer players. A T-test was performed once before (PRE) and twice following (POST 1 and POST 2) the completion of four sets of 4 s cycle ergometer sprints protocol. The sprint intervals were separated by 25 s active recovery. POST 1 was performed approximately 25 s following the final cycle sprint and POST 2 began two minutes after completing POST 1. Repeated measures ANOVA and Bonferroni post hoc tests were used to …

Go to article

Three Weeks Of Detraining Does Not Decrease Muscle Thickness, Strength Or Sport Performance In Adolescent Athletes, Simon Gavanda, Stephan Geisler, Oliver J. Quittmann, Helen Bauhaus, Thorsten Schiffer Apr 2020

Three Weeks Of Detraining Does Not Decrease Muscle Thickness, Strength Or Sport Performance In Adolescent Athletes, Simon Gavanda, Stephan Geisler, Oliver J. Quittmann, Helen Bauhaus, Thorsten Schiffer

International Journal of Exercise Science

International Journal of Exercise Science 13(6): 633-644, 2020. The purpose of this study was to examine the effects of detraining following a block (BLOCK) or daily undulating periodized (DUP) resistance training (RT) on hypertrophy, strength, and athletic performance in adolescent athletes. Twenty-one males (age = 16 ± 0.7 years; range 15-18 years) were randomly assigned to one of two 12-week intervention groups (three full-body RT sessions per week): BLOCK (n = 9); DUP (n = 12). Subsequently a three-week detraining period was applied. Body mass, fat mass (FM), fat-free mass (FFM), muscle mass, muscle thickness (rectus femoris, vastus …

Go to article

Momentum During A Running Competition: A Sequential Explanatory Mixed-Methods Study, Vincent Gosselin Boucher, Sandra Pelaez, Andrée-Anne Parent, Jacques Plouffe, Alain Steve Comtois Apr 2020

Momentum During A Running Competition: A Sequential Explanatory Mixed-Methods Study, Vincent Gosselin Boucher, Sandra Pelaez, Andrée-Anne Parent, Jacques Plouffe, Alain Steve Comtois

International Journal of Exercise Science

International Journal of Exercise Science 13(5): 615-632, 2020. The purpose of this study was to better understand the psychological momentum (PM) in varsity cross-country competitive runners during a 3000 m selection trials. A sequential explanatory mixed methods design was used: recruitment trial race day (quantitative) and interview day (qualitative + maximal aerobic running speed [MARS]). Sample was consisted of fifteen university distance runners (n = six women [25.9 ± 7.0 years old; 22.2 ± 1.8 BMI] and nine men [23.2 ± 2.4 years old; 22.6 ± 1.6 BMI]). During the recruitment trial race, athletes’ MARS was measured and used …

Go to article

The Increase In Oxygen Demand During Severe Intensity Exercise Must Be Included In Calculation Of Oxygen Deficit, Andrea E. Riojas, Jose R. Valenzuela, Brian K. Mcfarlin, Jakob L. Vingren, David W. Hill Apr 2020

The Increase In Oxygen Demand During Severe Intensity Exercise Must Be Included In Calculation Of Oxygen Deficit, Andrea E. Riojas, Jose R. Valenzuela, Brian K. Mcfarlin, Jakob L. Vingren, David W. Hill

International Journal of Exercise Science

International Journal of Exercise Science 13(4): 645-655, 2020. A contentious element in the traditional method of calculating accumulated oxygen deficit (AOD) is the assumption that the oxygen demand remains constant throughout a bout of exercise. The purpose of this study was to investigate the appropriateness of this assumption. Twelve women and eight men volunteered for the study and completed cycle ergometer tests that resulted in exhaustion after ~4 min and ~8 min. In each test, AOD was calculated by subtracting accumulated oxygen uptake (in mL∙kg–1) from estimated total oxygen cost (in mL∙kg–1), which was estimating two …

Go to article

First Prev Next Last