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Full-Text Articles in Education
The Effects Of Blue Light Exposure On Measures Of Lower-Body Strength And Power, Noah Reinertz, Brett Crossland Dr, Rigby B. Rhett, Alvis Hunter
The Effects Of Blue Light Exposure On Measures Of Lower-Body Strength And Power, Noah Reinertz, Brett Crossland Dr, Rigby B. Rhett, Alvis Hunter
International Journal of Exercise Science: Conference Proceedings
Recently blue light exposure at night has received negative attention due to its ability to interrupt the sleep-wake cycle through reducing melatonin production and increasing alertness. However, when individuals are exposed to blue light in the morning a number of positive benefits have been observed such as; decreases in depressive symptoms, increases in cognitive function, decreases in reaction time, and increases in alertness. PURPOSE: The purpose of this study was to determine if blue light exposure in the early morning was capable of increasing measures of lower-body strength and power. METHODS: A repeated measures crossover design was used …
Optimal Ranges Of Training Load And Recovery Status Prior To The Game To Maximize Game-Day Performance In Soccer, Cherish Keeney, Kelly B. Elliott, Jan-Joseph S. Rolloque, Ruben Moya, Kathryn E. Southall, Kealey J. Wohlgemuth, Jacob A. Mota, Yasuki Sekiguchi
Optimal Ranges Of Training Load And Recovery Status Prior To The Game To Maximize Game-Day Performance In Soccer, Cherish Keeney, Kelly B. Elliott, Jan-Joseph S. Rolloque, Ruben Moya, Kathryn E. Southall, Kealey J. Wohlgemuth, Jacob A. Mota, Yasuki Sekiguchi
International Journal of Exercise Science: Conference Proceedings
Identifying ideal ranges of training load (TL) and recovery status before soccer games is essential to maximize game-day performance. PURPOSE: To determine how accumulative TL and subjective fatigue affect performance during the game. METHODS: Twenty-one male semi-professional soccer players (mean ± standard deviation; age: 22 ± 2 years; mass: 77.3 ± 6.9 kg) wore a player tracking device to monitor TL during each practice and game. A 7-day accumulation of high speed running and sprinting (HSR+Sprint, ³12.30 mph), total distance (TD), low acceleration (LowACC: 0.50-1.99 m×s-2), and high acceleration (HighACC: 2.00-50.00 m×s …
Effects Of Acute Late Sleep Restriction On Strength, Power, And Running Speed In Recreationally Active Females, Karolina Iznerowicz, Jared W. Coburn, Sydney Leisz, Trevor Gillum, Michael Robinson, William Boyer
Effects Of Acute Late Sleep Restriction On Strength, Power, And Running Speed In Recreationally Active Females, Karolina Iznerowicz, Jared W. Coburn, Sydney Leisz, Trevor Gillum, Michael Robinson, William Boyer
International Journal of Exercise Science: Conference Proceedings
Previous research suggests that late sleep restriction (SR) paired with exercise in the morning does not have a significant impact on sport performance measures. However, this evidence is based on research conducted primarily in males. PURPOSE: To examine the effects of late sleep restriction on measures of strength, speed, and power among recreationally active females. METHODS: Twenty-three (23) recreationally active (aerobic physical activity and resistance exercise at least three times a week for six months) females participated in this study (mean age 21.5 years, BMI 23 kg/m2). A randomized, cross-over design was used under two conditions, recommended sleep …
Peak Power Changes During A Countermovement Jump Following Treadmill And Cycling High-Intensity Interval Training, Michael G. Maregne, Juliet Moore, E Todd Schroeder
Peak Power Changes During A Countermovement Jump Following Treadmill And Cycling High-Intensity Interval Training, Michael G. Maregne, Juliet Moore, E Todd Schroeder
International Journal of Exercise Science: Conference Proceedings
Within activities involving jumping, peak power can be a significant factor to consider when assessing an athlete’s overall physical performance. By investigating different modalities of exercise, it is possible to discover potential benefits or flaws in certain workout regimens that may influence jump performance. In turn, this could influence how physical trainers, athletes, and recreationally active people approach their exercise routine to maximize performance. PURPOSE: The purpose of this study was to investigate the changes in peak jump power during a countermovement jump (CMJ) immediately following and 1-hour post high-intensity interval training (HIIT) using high-impact (running) and low-impact (cycling) …
Biomechanical Indicators Of Steeplechase Hurdle Success, Luke Vankeersbilck, Luke Johnston, Iain Hunter
Biomechanical Indicators Of Steeplechase Hurdle Success, Luke Vankeersbilck, Luke Johnston, Iain Hunter
International Journal of Exercise Science: Conference Proceedings
The steeplechase is a long-distance running event that requires competitors to jump over 28 hurdles and 7 water jumps over the course of the race. This frequent jumping means that hurdling technique is important and the ability to maintain speed over the barriers can help a runner succeed. PURPOSE: To determine which variables predict maintenance of speed while hurdling in the steeplechase. METHODS: Data were collected at the USATF outdoor championships and Olympic Trials from 2011 to 2023 for both men and women. A Sony video camera running at 120 Hz was used to evaluate several aspects of …
The Effects Of Acute Fasting On Anaerobic Performance In Naia Softball Players, Emily J. Sauers, Madison A. Garza, Jennifer M. Estrada
The Effects Of Acute Fasting On Anaerobic Performance In Naia Softball Players, Emily J. Sauers, Madison A. Garza, Jennifer M. Estrada
International Journal of Exercise Science: Conference Proceedings
Intermittent fasting has become a popular method for athletes to help manage body weight. Additionally, athletes with early morning athletic practice often omit breakfast and arrive in a fasted state. It is unclear how fasting impacts performance in softball players. PURPOSE: The purpose of this study was to evaluate anaerobic performance in NAIA Softball players following an overnight fast. METHODS: Eight NAIA female softball players participated in this randomized cross-over study. Athletes were on the active roster at Our Lady of the Lake University. Athletes were 20.7 ± 0.5 years old, 163.1 ± 2.1 cm tall, 151.5 ± 10.0 lb. …
Sublingual Caffeine Supplementation And Its Effects On Physical Performance Measures In Highly Fit United States Military Personnel, Reggie B. O'Hara
Sublingual Caffeine Supplementation And Its Effects On Physical Performance Measures In Highly Fit United States Military Personnel, Reggie B. O'Hara
International Journal of Exercise Science: Conference Proceedings
Caffeine is a commonly used countermeasure to combat sleep deprivation and alleviate physiological and psychological performance degradations in highly trained military personnel operating in extreme environments for extending periods. Although the mechanisms of action of caffeine are well described in the literature, the ergogenic effects of caffeine are variable based on the individual’s nutritional status, sensitivity to caffeine, genetics, dose, timing, and overall physical condition. PURPOSE: To explore the effects of moderate doses of sublingual caffeine on physical performance measures and perceptions of fatigue in highly fit U.S. military personnel. METHODS: A convenience sample of eleven highly trained, …
How Does Maximal Aerobic Capacity Predict The Performance Of Rotc Cadets On The Acft, Ruth Larson, Annika Grams, Sofia Harman, Sara Thomasson, Kaitlyn Wabakken, Katelynn Brock, Payton Price, Anthony Acevedo, Zachary Zeigler
How Does Maximal Aerobic Capacity Predict The Performance Of Rotc Cadets On The Acft, Ruth Larson, Annika Grams, Sofia Harman, Sara Thomasson, Kaitlyn Wabakken, Katelynn Brock, Payton Price, Anthony Acevedo, Zachary Zeigler
International Journal of Exercise Science: Conference Proceedings
The Army Combat Fitness Test (ACFT) is a newly developed test that assesses the combat readiness of U.S. Army soldiers. Maximal aerobic capacity (VO2max) characteristics vary between soldiers and have the ability to affect performance outcomes. The purpose of this cross-sectional study is to determine if VO2max can predict performance outcomes of the ACFT in ROTC cadets. Methods: ROTC cadets (44 males, 15 females; aged 21.06 ± 3.6 years) completed the 6-event ACFT (3-repetition maximum trap-bar deadlift [MDL], standing power toss [SPT], hand-release pushups [HRPU], sprint-drag-carry shuttle run [SDC], plank [PLK], and 2-mile run [2MR]). The cadets …
Novel Application Of A Performance Prediction Model During Altered Running Gait Strategies, Oluchi Ibe, Robert Musci, Jenevieve L. Roper
Novel Application Of A Performance Prediction Model During Altered Running Gait Strategies, Oluchi Ibe, Robert Musci, Jenevieve L. Roper
International Journal of Exercise Science: Conference Proceedings
Currently, there is limited research demonstrating that gait retraining can significantly impact running economy and subsequent running performance in distance runners with most of the research showing no or minimal change. Recently, a novel model was developed that predicts running performance based on changes in running economy but has not previously been applied when altering running gait strategies. PURPOSE: The goal of the study was to determine the effect of altering running strategy on predicted running performance in distance runners through application of this novel prediction model. METHODS: Fifteen male (n=10; Age: 22.2 ± 4.9 years; Height: 177.7 ± 7.4 …
Assessing The Validity Of A Performance Prediction Model For Use With Gait Retraining, Christian Faltas, Robert Musci, Jenevieve L. Roper
Assessing The Validity Of A Performance Prediction Model For Use With Gait Retraining, Christian Faltas, Robert Musci, Jenevieve L. Roper
International Journal of Exercise Science: Conference Proceedings
A common strategy that athletic trainers and high-performance athletes use to manage and treat running-related injuries is gait retraining. However, the research is equivocal on how gait retraining can affect running economy and subsequent running performance in distance runners. A new prediction model was developed that predicts running performance based on oxygen consumption changes, however, it is unclear if this model is valid and can accurately be used to predict running performance as a result of gait retraining. PURPOSE: The goal of the study was to determine the validity of the performance prediction model, particularly when applied to gait …
Sled-Pull Training Improves Maximal Horizontal Velocity In Collegiate Male And Female Soccer Players, Atithi K. Multani, John A. Brasher, Robert J. Rovetti, Junyuan Lin, Robert V. Musci, Jenevieve L. Roper
Sled-Pull Training Improves Maximal Horizontal Velocity In Collegiate Male And Female Soccer Players, Atithi K. Multani, John A. Brasher, Robert J. Rovetti, Junyuan Lin, Robert V. Musci, Jenevieve L. Roper
International Journal of Exercise Science: Conference Proceedings
The force velocity profile (FvP), which details the capacity to sprint and accelerate, is a determinant of success in soccer. To date, no data exist that details the FvP of male and female collegiate Division I soccer players. Further, there is limited insight on how training interventions may modify the FvP of either males or females. PURPOSE: The aim of this investigation was to compare FvP between collegiate male and female athletes and assess the efficacy of a 12-week sled pull training intervention. METHODS: 17 male (20.17 ± 1.38 yrs) and 12 female (19.75 ± 1.05 yrs) soccer …
Sled-Pull Training Protocol Increases Critical Speed In Female Collegiate Soccer Players, Andrew J. Hartz, John A. Brasher, Jenevieve L. Roper, Robert V. Musci
Sled-Pull Training Protocol Increases Critical Speed In Female Collegiate Soccer Players, Andrew J. Hartz, John A. Brasher, Jenevieve L. Roper, Robert V. Musci
International Journal of Exercise Science: Conference Proceedings
Critical speed (CS) is the speed one can sustain while maintaining blood lactate, phosphocreatine, and oxygen uptake levels. “Distance capacity beyond CS” (D’) is the reserve an athlete can draw from to run faster than their CS. By increasing CS and D’, athletes can sustain a faster threshold pace (CS) and have a greater sprint capacity (D’). Unlike distance traveled and speed, which do not reflect the metabolic strain of an exercise, CS and D’ assess the relative intensity of an activity to provide individualized inter- and intra-competition insight. PURPOSE: This investigation evaluated CS and D’ among men and women …
Unilateral Handgrip Holds To Failure Result In Sex-Dependent Contralateral Facilitation, Caleb C. Voskuil, Taylor K. Dinyer-Mcneely, Pasquale J. Succi, Marilyn S. Campbell, Mark G. Abel, Haley C. Bergstrom
Unilateral Handgrip Holds To Failure Result In Sex-Dependent Contralateral Facilitation, Caleb C. Voskuil, Taylor K. Dinyer-Mcneely, Pasquale J. Succi, Marilyn S. Campbell, Mark G. Abel, Haley C. Bergstrom
International Journal of Exercise Science: Conference Proceedings
There can be differences in fatigue characteristics between men and women. In some cases, these differences may be manifested in unique strength responses in the fatigued and non-fatigued limbs following a unilateral fatiguing task. PURPOSE: This study examined changes in maximal voluntary isometric contraction (MVIC) force following dominant (Dm) and nondominant (NDm) unilateral, isometric handgrip holds to failure (HTF) for the exercised ipsilateral (IPS) and non-exercised contralateral (CT) limbs. Sex- and hand- (Dm vs NDm) dependent responses in HTF time, performance fatiguability (PF, %D in MVIC) for the exercised IPS limb, as well as changes in MVIC force for the …
Effect Of Treadmill Surface Stiffness On The Running Economy Benefits Of A Highly-Cushioned Racing Shoe: A Pilot Study, Zane A. Thornton, Dustin P. Joubert
Effect Of Treadmill Surface Stiffness On The Running Economy Benefits Of A Highly-Cushioned Racing Shoe: A Pilot Study, Zane A. Thornton, Dustin P. Joubert
International Journal of Exercise Science: Conference Proceedings
Running economy (RE) is defined as the oxygen consumption (VO2) at a given running speed. The Nike Vaporfly line of racing shoes, which includes more compliant and resilient midsole foam and a carbon-fiber plate, have been shown to improve RE during treadmill testing. Previous research suggests that RE in general is worse on treadmills with stiffer running platforms. However, it is unclear if the magnitude of the RE benefits provided by these new shoes relative to a control shoe differ based on treadmill stiffness. Given that some treadmill platforms allow more flex or compliance, this may be an …
The Effect Of Sport-Specific Resistance Training On Athletic Performance Outcomes Of College Rodeo Athletes, Kenneth L. Bowen Jr.
The Effect Of Sport-Specific Resistance Training On Athletic Performance Outcomes Of College Rodeo Athletes, Kenneth L. Bowen Jr.
International Journal of Exercise Science: Conference Proceedings
Resistance training yields significant improvements to athletic performance outcomes among multiple sports. A sport-specific approach for resistance produces greater adaptation and transfer to various sports. However, few studies have examined the potential benefit of sport-specific resistance training for the sport of rodeo. PURPOSE: The aim of the current investigation was to assess the effect of sport-specific resistance training on athletic performance outcomes of rodeo athletes. METHODS: Seventeen college rodeo athletes (12 females; 5 males) participated in an 8-week, 3-days per week, sport-specific resistance training program. Muscle cross sectional area (CSA), mid-thigh pull maximal isometric voluntary contraction (MVC), height (HT), …
Running Economy Strongly Related To Ground Contact Time Imbalances, Aaron D. Piper, Erica G. Knowles, Nicholas A. Guerra, Eric J. Jones, Dustin P. Joubert
Running Economy Strongly Related To Ground Contact Time Imbalances, Aaron D. Piper, Erica G. Knowles, Nicholas A. Guerra, Eric J. Jones, Dustin P. Joubert
International Journal of Exercise Science: Conference Proceedings
Running economy (RE) can be defined as the oxygen consumption or caloric unit cost required to move at a specific velocity. In addition to a runner’s maximal oxygen uptake (VO2max) and lactate threshold (LT), RE is a key endurance performance determinant. Better RE is advantageous as it represents the ability to run at a lower relative percentage of VO2max at a given speed and reduces the rate of energy depletion. Ground contact time (GCT) has been associated with RE, however it has not been established how GCT imbalances between feet impact economy. Purpose: Determine the relationship between cadence, GCT, and …
The Relationship Between Heart Rate Variability And Skeletal Muscle Damage In Female Collegiate Athletes, Brett Crossland, Matt Sokoloski, Brandon R. Rigby
The Relationship Between Heart Rate Variability And Skeletal Muscle Damage In Female Collegiate Athletes, Brett Crossland, Matt Sokoloski, Brandon R. Rigby
International Journal of Exercise Science: Conference Proceedings
Heart rate variability (HRV) is an accurate indicator of sympathetic and parasympathetic nervous system activity. With athletes, HRV analysis can be a useful tool in analyzing the readiness to train, recovery status, and chronic adaptations to training, and overtraining. Skeletal muscle damage, which can be an outcome of overtraining, may be assessed using biomarkers in the blood, including creatine kinase (CK). The relationship between skeletal muscle damage and measures of HRV with regards to performance is not known. PURPOSE: The purpose of this study was to determine the relationships between HRV measures and serum CK concentrations. A secondary purpose …
Acute Effects Of Yoga On A Vibration Platform On Heart Rate, Blood Pressure, Flexibility, And Vertical Jump, Ricardo Parra, Elijah Lopez, Jason Mendoza, Joshua Fronk, Arnold Jimenez, Ashley Rivas, Murat Karabulut
Acute Effects Of Yoga On A Vibration Platform On Heart Rate, Blood Pressure, Flexibility, And Vertical Jump, Ricardo Parra, Elijah Lopez, Jason Mendoza, Joshua Fronk, Arnold Jimenez, Ashley Rivas, Murat Karabulut
International Journal of Exercise Science: Conference Proceedings
Both yoga and whole-body vibration exercise may have a wide-range of positive effects independent of each other. PURPOSE: The purpose of this study was to examine the acute effects of yoga performed on and off a vibration platform on blood pressure, flexibility, and vertical jump. METHODS: Subjects (n = 14; 9 females, 5 males; mean age = 22.5 ±1.9) completed 3randomized protocols of yoga on and off a vibration platform. The testing protocols were: 1) yoga poses on vibration platform with low frequency and low amplitude (PPL), 2) yoga poses on platform with high frequency and high amplitude …
Kinematic Comparison Of Underwater Dolphin And Flutter Kicking Performed In A Prone And Supine Body Position, Peter Robinson, Taylor L. Adams, Kali Rose, Mickey B. Scharbrough, Scott P. Mclean
Kinematic Comparison Of Underwater Dolphin And Flutter Kicking Performed In A Prone And Supine Body Position, Peter Robinson, Taylor L. Adams, Kali Rose, Mickey B. Scharbrough, Scott P. Mclean
International Journal of Exercise Science: Conference Proceedings
Despite an increasing emphasis on underwater dolphin kicking in competitive swimming, little objective research exists to explain its preference over flutter kicking. PURPOSE: To examine kinematic characteristics of flutter and dolphin kicking performed in prone and supine body positions. METHODS: Ten collegiate swimmers (1.77±0.07 m, 72.4±7.6 kg, 19.8±1.0 yrs) experienced with dolphin and flutter kicking completed eight 10 m maximal effort underwater kicking trials. Body position and kicking style were randomly varied between trials such that half of all trials were performed using each kicking style and each body position. A calibrated underwater camera was used to record …