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Concurrent Exercise Training Program Adaptations In Sedentary, Middle-Aged Adults, Zachary Moon, Erica Otto, Rachel Chiella, Barrett Knapp, Matthew Bierwirth, Edward Merritt

International Journal of Exercise Science: Conference Proceedings

Concurrent exercise programs are necessary to achieve minimal physical activity guidelines for cardiorespiratory fitness and musculoskeletal health, however, only 24% of Americans achieve these goals. Among middle-aged adults, lack of time is often cited as the reason they do not meet the guidelines. PURPOSE: Design a program with minimal exercise time (180 minutes/week) and track middle-aged adults' changes in cardiorespiratory and musculoskeletal health over 16 weeks of training. METHODS: Sedentary adults between the ages of 30 and 55 were recruited for this pilot study. Participants completed a training program of 4 days per week of structured workouts for …

The Relationship Between Shoulder Mobility And Upper Body Muscle Mass On 2-Rm Bench Press Performance, Raquel J. Cavazos, Francesca Aquilino, Ernesto Balderrama, Chaehyun Byun, Shelby Gerner, Cheyenne Martinez, Austin Riffe, Vipa Bernhardt, Michael D. Oldham

International Journal of Exercise Science: Conference Proceedings

INTRODUCTION: Upper body strength is one of the most important factors in American football and thus tested frequently. However, strength may come at the cost of mobility as recent studies have reported an inverse relationship between shoulder range of motion (ROM) and strength, with an increase in strength causing a decrease in ROM (Shitara et al., 2022). PURPOSE: The purpose of this study was to determine if upper body muscle mass or shoulder mobility are associated with two-repetition max (2-RM) bench press performance in collegiate football players. METHODS: Data from 80 Division I varsity football players (20.5 ± 1.4 …

No Differences In Strength Improvements Following Low- Or High-Volume Resistance Training, Katie G. Kennedy, Neil A. Schwarz, Jacob A. Mota, Ryan J. Colquhoun

International Journal of Exercise Science: Conference Proceedings

Resistance training is a widely used modality for improving muscular strength and reducing risks of injury, which is vital to counteracting physical declines associated with aging and poor health. Despite this, the minimal effective training dose for improving muscular strength has yet to be fully elucidated. PURPOSE: The purpose of this study was to examine the role of training volume (number of sets per session) on muscular strength changes following 8 weeks of progressive resistance training. METHODS: Fourteen and 12 trained males (Mean±SD; Age: 23±3y) and females (Age: 20±1y) participated in 8 weeks of supervised 3x/week progressive resistance …

Handgrip Peak Force And Rate Of Force Development Measurements: Are They Reliable And Do They Correlate With Vertical Jump Power?, Pratibha S. Maurya, Kayla P. Sisneros, Evan Johnson, Ty B. Palmer

International Journal of Exercise Science: Conference Proceedings

Handgrip peak force and rate of force development (RFD) measurements have been shown to be effective parameters at characterizing the strength capacities of numerous muscle groups, including those of the lower extremities. However, the reliability of these measurements and their relationship with vertical jump (VJ) peak power remains uncertain. PURPOSE: The purpose of this study was to examine the reliability of handgrip peak force and RFD measurements. A secondary aim was to determine if these measurements are correlated with the peak power produced during a VJ test. METHODS: Twenty young, healthy women (age = 21 ± 3 years) …

The Effects Of Music On Muscle Fatigue And Strength In Individuals With Previous Knee Injuries, Bryan J. Pizarro, Amber M. Shipherd, Robert Kowalsky

International Journal of Exercise Science: Conference Proceedings

Music can be used during physical activity for a variety of ergogenic, psychological, and psychophysical benefits. Listening to one’s preferred genre of music has been found to optimize arousal and increase motivation during an exercise bout that can lead to performance improvements. Rehabilitation patients often struggle to adhere to their rehabilitation for a variety of reasons, including lack of enjoyment, lack of progress, or even increased pain or fatigue. Therefore, incorporating music into a rehabilitation setting could help patients improve their strength and reduce fatigue, thus improving rehabilitation adherence. PURPOSE: To examine the effects of music preference on muscle fatigue …

Sled Pull Training Protocol Does Not Improve Peak Force And Increases Asymmetry In Collegiate Soccer Players, Kyra K. Parske, John A. Brasher, Robert V. Musci, Jenevieve L. Roper

International Journal of Exercise Science: Conference Proceedings

Speed and acceleration are trainable components that are critical determinants of success in team sports, particularly soccer. Lower extremity strength is one of many factors that determine the maximal force output and velocity of individuals, which is critical to success in sport. PURPOSE: To determine the effects of a 12-week sled pull training intervention on isometric leg strength and asymmetry. METHODS: Participants from Division 1 collegiate men (20 ± 1.5yrs, 168.28 ± 51.17cm, 73.44 ± 23.46kg) and women’s soccer (19.58 ± 1.02yrs, 167.07 ± 3.81cm, 62.46 ± 8.41kg) team performed pre-training isometric thigh pulls on force plates measuring peak force …

The Performance Profile Of A Division I Football Team, Seth B. Long, Tyler Shumate, Dierdra K. Bycura, Scott N. Drum

International Journal of Exercise Science: Conference Proceedings

Reporting athletic performance characteristics of a Division I collegiate football team may serve to inform coaching personnel and sports performance staff about the most versatile players to utilize for various competitions. Performance data may also help guide developing athletes about benchmarks to achieve for optimal competitiveness. PURPOSE: Our aim was to observe athletic performance characteristics of and differences between designated starters (ST) vs non-starters (NST). METHODS: 44 athletes – ST (n=22) vs NST (n=22) – were selected using a convenience sample and equally distributed between offense and defense positions. Preseason performance data were analyzed related to select power, including …

Firefighter Trainee Fitness, Reasons For Academy Release, And Predictive Capabilities Of Fitness Tests, Robert G. Lockie, Fernando Montes, Robin (Rob) Marc Orr, J. Jay Dawes

International Journal of Exercise Science: Conference Proceedings

Firefighter trainees need a level of fitness to be admitted to and complete a training academy. Fitness could indicate a trainee’s likelihood of graduation. PURPOSE: Determine fitness differences between trainees who graduated (GRAD) or were released due to a) injury (RELI), b) skills test performance failures (RELP), or c) resignation (RELR); and whether fitness predicted graduation or academy release. METHODS: Data from an occupational physical ability test (OPAT) for 686 trainees were analyzed, including: Illinois agility test; push-ups; pull-ups; leg tucks; estimated maximal aerobic capacity (V̇O_2max) from the multistage fitness test; backwards overhead 4.54-kg medicine ball …

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 …

Resistance Training May Mitigate Age-Related Decline In Physical Function, Holly H. Kendall, David Torres, Quinten W. Pigg, Lindsay E. Kipp Ph.D, Joni A. Mettler Ph.D

International Journal of Exercise Science: Conference Proceedings

Aging is often accompanied with the onset of sarcopenia, defined by low muscle mass, strength, and physical function. Regular resistance exercise may mitigate this loss; however, data are lacking that compare younger and older adults who do and do not perform resistance training for general health on skeletal muscle mass and physical function. PURPOSE: The aim of this study was to identify differences in muscle mass and physical function between younger and older adults who did and did not perform resistance training for general health. METHODS: Healthy younger (23.8 ± 0.4 yrs) and older (68.5 ± 1.2 yrs) men and …

Effect Of 4-Week Creatine Monohydrate Supplementation On Absolute Strength In Trained And Untrained Healthy Adults, Carson C. Vollmer, Brittany K. Sanchez

International Journal of Exercise Science: Conference Proceedings

Creatine monohydrate (CrM) is a synthetic form of creatine which has similar effects on the body as compared to the endogenous form. Creatine is used by the body to supply rapid ATP to muscles for contractile movements and is regularly obtained in the diet, primarily from meat products, or synthesized by the liver at a 24-hour turnover rate of approximately 1-2 g/day. Creatine supplementation is commonly used with the intention of improving muscular strength and hypertrophy for athletic performance along with enhanced recovery time, injury prevention, rehabilitation, and potential neuroprotective benefits. PURPOSE: The specific aim of this study is …

The Influence Of Sex On The Cross-Over Effects Of Handgrip Fatigue, Joshua C. Carr, Michael G. Bemben, Jason Defreitas

International Journal of Exercise Science: Conference Proceedings

Recent data shows that fatigue may ‘cross-over’ to the contralateral, non-fatigued muscle group following fatiguing unilateral activity and these effects may be influenced by sex. PURPOSE: This study examines whether the cross-over effects of handgrip fatigue are influenced by sex. METHODS: Thirty-two (n = 16 females, n = 16 males) right-hand dominant individuals performed a maximal intermittent handgrip fatigue protocol with their non-dominant hand. A control visit was also performed, and the visits were completed in a randomized order. The fatigue protocol consisted of nine, 20 s maximal handgrip contractions with 20 s of recovery between bouts. Maximal …

Menstrual Phase Symptoms And Perceived Musculoskeletal Strength And Flexibility Among Ncaa Collegiate Athletes, Ashton N. Vasquez, Kristen Mcalexander

International Journal of Exercise Science: Conference Proceedings

Previous findings suggest that the associations among menstrual hormones, symptoms and human performance are inconsistent and lacking. Earlier research has measured hormonal fluctuations and symptoms from each of the four menstrual phases (menstrual, follicular, ovulation, and luteal), but their physiological effects on perceived musculoskeletal strength and perceived flexibility remain unclear, particularly among college athletes. PURPOSE: To measure the prevalence and associations among self-reported menstrual symptoms, perceived overall strength and perceived flexibility in NCAA female athletes during each of the four menstrual phases. METHODS: In the Fall of 2020, a survey consisting of demographic questions and questions of perceived strength, flexibility, …

Age-Related Differences In Forearm Muscle Size And Handgrip Maximal And Rapid Force Characteristics, Chinonye C. Agu-Udemba, Ethan Mitchell, Ahalee C. Cathey, Ty B. Palmer

International Journal of Exercise Science: Conference Proceedings

With handgrip strength being an important predictor of future disability and mortality, it is essential to expand our understanding of the age-related changes in handgrip strength characteristics and their underlying mechanisms. Previous studies have reported that decreases in muscle size of the forearm may contribute to age-related deficits in wrist flexion strength. However, we are aware of no previous studies that have examined the contribution of forearm muscle size to age-related differences in handgrip strength, and more specifically, the age-related differences in handgrip maximal and rapid force characteristics. PURPOSE: To determine the effects of age on forearm muscle size …

The Effects Of Blood Flow Restriction Training On Strength, Body Composition, And Hormone Response In Resistance Trained Collegiate Females., Victoria R. Olive, Julia M. Harrison, Jelena Jakovljevic, Sarah F. Truelove, Drew A. Willoughby, Stacie Urbina, Lemuel W. Taylor Iv, Colin Wilborn

International Journal of Exercise Science: Conference Proceedings

INTRO: Blood Flow Restriction (BFR) training combined with resistance training is thought to be an effective modality in increasing muscular strength and hypertrophy, as well as growth hormone and cortisol levels in the blood. PURPOSE: The purpose of this study was to examine the effectiveness of BFR combined with resistance training on muscular strength, hypertrophy, growth hormone, and cortisol compared to resistance training alone. METHODS: Twenty-one female participants (9 omitted for non-compliance), ages ranging between 18-25, resistance trained, and BMI <30.0 kg/m², were recruited from the UMHB student body. Participants were randomly divided into two groups: Occluded (OC) and Non-occluded …

The Effects Of Twelve Weeks Of Combined Resistance And Aerobic Training On Arm Lean Mass In Post-Menopausal, Obese Women, Jacob O'Connor, Andreas Kreutzer, Michael M. Levitt, Maria A. Cardenas, Carmen Cook, Emily Souder, Kaci Orr, Stephanie Huber, Gail Teagle, Kirby Thames, Elise Erickson, Emma Wichman, Melody D. Phillips

International Journal of Exercise Science: Conference Proceedings

ABSTRACT

Sarcopenia, a loss in muscle mass as a result of aging, is an independent risk factor for disability and is significantly associated with self-reported physical disability in both men and women. Strength training reverses the loss of, or maintains muscle mass in individuals as they age. PURPOSE: To examine the potential change in lean muscle mass of the arms in response to a 12-week combination strength and aerobic exercise training intervention in post-menopausal (55-75 years), obese women. METHODS: Forty-one women were randomly assigned to either an exercise (EX, n=22 ) or education (ED, n=19) group. For twelve …

The Influence Of Strength, Torque, And Range Of Motion On Injury Rates In Distance Runners – A Meta-Analytic Review, Angela Martin, Bryce Groshek, Joseph Hernandez, Leroy Trujillo, Frank Wyatt, Jason B. Winchester

International Journal of Exercise Science: Conference Proceedings

Running for distance is not exclusive to athletes, but inclusive to everyday individuals as a method of aerobic conditioning, and due to its convenience compared to other methods of exercise. Although there are many well established health benefits, injuries are common with participation, with estimates ranging from 6.8-59 per 1000 hours of running along with a high rate of recurrence. PURPOSE: To analyze the effects of performance variables on injury rates in distance runners. METHODS: A meta-analysis review was conducted to investigate differences in strength, torque, and range of motion in injured versus uninjured distance runners. Data over …

Pre- And In-Season Strength And Conditioning Training Changes In Leg Peak Power Performance In Collegiate Division Ii Women’S Basketball Team: A Case Study, Alexander B. Anderson, Cherise M. Key, Brandon K. Sanders, Zacharias Papadakis

International Journal of Exercise Science: Conference Proceedings

Basketball is a team sport that places emphasis on explosive movements. Leg peak power (PP) performance provides an advantage for successful basketball participation. Pre-season (PS) strength and conditioning training (SCT) sets the foundation for in-season (IS) success. However, determining the optimal duration, of PS and IS SCT to develop improvements in PP is still under investigation. PURPOSE: To describe the changes over time in PP during a 4 weeks of PS and 6 weeks of IS SCT in a collegiate Division II women’s basketball team. METHODS: Besides PS in-court sessions (4.5 hrs/wk), 14 female players completed 3 hrs/wk …

Reliability And Relationships Between Rectus Femoris Muscle Size And Hip Flexion Maximal And Explosive Strength, Megan R. Cruz, Jose G. Pineda, Ty B. Palmer

International Journal of Exercise Science: Conference Proceedings

Ultrasound assessments of muscle cross-sectional area (CSA) are commonly used to evaluate muscle size in young adults. It has been hypothesized that the CSA of the rectus femoris (RF) may be an important contributor to hip flexion maximal and explosive strength capacities. However, limited data exist regarding the reliability of RF CSA and how it relates to maximal and explosive strength of the hip flexors in young adults. PURPOSE: To examine the reliability of RF CSA and its relationships with hip flexion isometric maximal and explosive strength. METHODS: Nineteen young, healthy females (age = 21±2 years; mass = …

Training Manipulations Based On Acute Heart Rate Variability Measures, Brett Crossland, Brandon R. Rigby, Christopher Irvine 5098522, Matthew F. Brisebois, David L. Nichols Ph.D., Facsm

International Journal of Exercise Science: Conference Proceedings

Heart rate variability (HRV) is an accurate indicator of sympathetic and parasympathetic nervous system activity. The balance between these systems affects the time between heartbeats. A high variability between heartbeats is equated to a greater influence from the parasympathetic nervous system. In this state, an individual is well rested, and therefore possesses higher readiness to perform physical activity. Through the use of smartphone applications (apps), athletes and coaches can collect accurate short-term HRV readings to assess autonomic nervous system balance. These apps provide a readiness to train score that may prove beneficial in adjusting daily training loads to maximize performance. …

Effects Of Practical Durations Of Stretching On Hamstrings Range Of Motion And Strength, Jose G. Pineda, Megan R. Cruz, Ty B. Palmer

International Journal of Exercise Science: Conference Proceedings

ABSTRACT

Stretching is often performed prior to exercise with the intent to improve range of motion (ROM) and athletic performance. However, stretching-induced strength loss has been extensively reported and is believed to be influenced by several factors, including the time under stretch. The majority of previous studies showing stretching-induced strength declines have used stretching routines for durations (8-30 min) considerably longer than those commonly applied in the field. Fewer studies have examined the effects of shorter, more practical durations (≤2 min) of stretching on ROM and muscle strength. PURPOSE: To examine the acute effects of practical stretching durations on …

The Effects Of Testosterone Boosters On Testosterone, Strength, And Body Composition In Young Trained Males, M. Gonzalez, B. Harding, N. Cattano, S. Fowkes-Godek, M. Reed

International Journal of Exercise Science: Conference Proceedings

Please refer to the pdf version of the abstract located adjacent to the title.

Effect Of Two Week L-Arginine Supplementation On Variables Related To Endurance And Strength Performance In Collegiate Football Players, Bobby J. White Iii, Nicholas A. Mask, Scott P. Mclean, Jimmy C. Smith

International Journal of Exercise Science: Conference Proceedings

Background: It has been shown that a month-long supplementation period of L-arginine, coupled with exercise training, increases exercise performance more than either supplementation or exercise alone (Hambrecht et al., 2000). Purpose: The purpose of this study was to examine the effects of a shorter 2 wk L-arginine supplementation period on factors related to endurance and strength performance. Methods: Twelve collegiate football players volunteered to participate in this study. The control group (n = 6) and treatment group (n = 6) both participated in the same off-season training program that consisted of strength training 3 d/wk and agility training 2 d/wk. …

Relationships Between Anthropometric And Performance Variables In Youth: Predictors Of Lower-Body Vertical Jump Peak Power, Alexander S. Drusch, Elias M. Carrillo, Jacob Adam Mota, Kendra D. Olinghouse, Matt S. Stock, Marc Lochbaum, Brennan J. Thompson

International Journal of Exercise Science: Conference Proceedings

ABSTRACT

Anthropometric and physical performance measurements are commonly used for identifying specific physical traits in youth. Laboratory-based tests (e.g., linear velocity transducers), while accurate, provide practical limitations due to high costs and technical necessities. Thus, commonly used field tests may be useful alternatives for assessing fitness/performance characteristics of youth. The purpose of this study was to examine the relationships between anthropometric measures and lower-and upper-body power and strength measures; and to assess the predictive ability of these measures for lower-body vertical jump peak power (PP) output in youth. Thirty-nine pre-adolescent (mean±SD, range: age=7.8±1.7, 5-12 years) children volunteered to participate in …

Tcd4+ Lymphocyte Are Related To Muscle Strength Parameters In Hiv-1 Positive Adolescents: A Preliminary Study, Erik D. Hanson, Fabio H. Ornellas, Claudio L. Battaglini, Reury F P Bacurau, Alan J P Moraes, Magnus Benetti, Marinella D. Negra, Carmen Lp Lancellotti

International Journal of Exercise Science: Conference Proceedings

Introduction: Catabolism of muscle and loss of function are complications that can occur during the course of HIV infection, and are commonly seen in a majority of adolescents with vertically transmitted Human Immunodeficiency Virus-type 1 (HIV-1). The levels of CD4+ and CD8+ lymphocytes, reference markers for the treatment of vertically transmitted HIV-1, also decline as the disease progresses. Alterations on these reference markers may be associated with neuromuscular force parameters in sedentary adolescents that have potential as prognostic indicators for treatment administration. Objective: To investigate the relationship between maximal isometric muscular contraction force and levels of CD4+ and CD8+ lymphocytes …

Prediction Of Total Body And Regional Strength Using Dexa Body Composition Measurements, Alex T. Carradine, Brad S. Lambert, Stephen F. Crouse

International Journal of Exercise Science: Conference Proceedings

ABSTRACT Resistance training is a valuable exercise modality but few tools exist to aid practitioners in refining resistance exercise prescriptions. PURPOSE: To determine if a relationship exists between strength and selected body composition variables measured by DEXA; and if so, develop equations which predict total body and regional strength. METHODS: Sixty-eight subjects (Male n = 34, Age = 35±11.96yrs, Height = 181.54±6.76cm, Weight = 97.82±16.68kg, Body Fat = 31.24±8.12% | Female n = 34, Age = 37±12.6yrs, Height = 165.41±5.64cm, Weight = 80.55±18.48kg, Body Fat = 43.00±10.16%) underwent DEXA body composition testing and maximal strength testing utilizing Keiser® pneumatic resistance …

Tribulus Terrestris: A Study Of Its Effects On Strength, Body Composition, And Cardiovasuclar Health, William Kaing, Mike Cedeño, Jennifer Blevins-Mcnaughton

International Journal of Exercise Science: Conference Proceedings

The study of ergogenic aids and their influence results in many uncertainties that have yet to be answered or explained. There is speculation about the effectiveness of Tribulus terrestris (TT) as an ergogenic aid and its effectiveness for increasing power and strength. Little research has been completed to monitor its effects on cholesterol and blood pressure. The purpose of this study was to evaluate the effect of TT on muscular strength, blood pressure, and cholesterol in a sedentary population. Eighteen males (18 - 24 yrs,) were randomly assigned using a double-blind protocol into either TT group (n=9) or placebo (n=9), …

Harvest Of The Ipsilateral Hamstrings Does Not Result In Tibial Internal Rotation Strength And Endurance Insufficiencies For Patients 12 To 36 Months Post-Anterior Cruciate Ligament Reconstruction, Giampietro L. Vairo

International Journal of Exercise Science: Conference Proceedings

Ipsilateral hamstrings tendons harvest as a primary autograft for anterior cruciate ligament (ACL) reconstruction has become increasingly prevalent among orthopaedic surgeons. Though, limited evidence exists detailing ensuing knee joint performance capacity. Previous authors have reported that ipsilateral semitendinosus and gracilis (STG) harvest results in significant tibial internal rotation strength deficiencies for related patients (1,2). However, prior data in regards to this measure have been reported as absolute as opposed to relative indices of strength and have not produced endurance results. Therefore, our objective was to profile relative tibial internal rotation strength and endurance responses to STG harvest in ACL reconstructed …

The Effects Of A Proprietary Fenugreek Extract On Strength & Body Composition, Eric J. Constancio, Colin Wilborn, Lem Taylor, Cliffa Foster, Brandon Bushey, Chris Poole, Earnest Pena, Tyler Jones, Richard Kreider

International Journal of Exercise Science: Conference Proceedings

Fenugreek extract has been marketed in dozens of dietary products as having performance enhancing potential for resistance trained athletes. PURPOSE: The purpose of this study was to investigate the potential performance enhancing effects of a proprietary fenugreek extract in conjunction with a controlled resistance training program. METHODS: Thirty resistance trained male subjects were matched according to fat free mass and randomly assigned to ingest in a double-blind manner capsules containing 500mg of a placebo or fenugreek (Trigonella Foenun greacum) once per day for 8-weeks (Active: N = 17, 21 ± 2.8 yrs, 178 ± 5.8 cm, 85 ± 9.6 kg, …