Sports Sciences Commons^™

Effects Of Submaximal And Supramaximal Accentuated Eccentric Loading On Mass And Function, Sergio Maroto-Izquierdo, Fernando Martín-Rivera, Kazunori Nosaka, Marco Beato, Javier González-Gallego, José A. De Paz

Research outputs 2022 to 2026

Introduction: Eccentric-overload (EO) resistance training emerges as an alternative to more optimally prescribe intensity relative to the force generation capabilities of the eccentric muscle contraction. Given the difficulties to individually prescribe absolute eccentric loads relative to each person’s eccentric ability, setting the load relative to the concentric one-repetition maximum (1-RM) is the most used EO training approach. Therefore, we investigated the effects of submaximal and supramaximal (i.e., eccentric loads above 100% of 1-RM) accentuated eccentric training on changes in lean mass, anabolic hormonal responses and muscle function. Methods: Physically active university students (n = 27) were randomly assigned to two …

Sprint Cycling Rate Of Torque Development Associates With Strength Measurement In Trained Cyclists, Shannon Connolly, Peter Peeling, Martyn J. Binnie, Paul S. R. Goods, Christopher Latella, Janet L. Taylor, Anthony J. Blazevich, Wouter P. Timmerman, Chris R. Abbiss

Research outputs 2022 to 2026

Purpose:

A cyclist’s rate of force/torque development (RFD/RTD) and peak force/torque can be measured during single-joint or whole-body isometric tests, or during cycling. However, there is limited understanding of the relationship between these measures, and of the mechanisms that contribute to each measure. Therefore, we examined the: (i) relationship between quadriceps central and peripheral neuromuscular function with RFD/RTD in isometric knee extension, isometric mid-thigh pull (IMTP), and sprint cycling; and (ii) relationship among RFD/RTD and peak force/torque between protocols.

Methods:

Eighteen trained cyclists completed two familiarisation and two experimental sessions. Each session involved an isometric knee extension, IMTP, and sprint …

A Feasibility, Safety, And Efficacy Evaluation Of Supervised Aerobic And Resistance Exercise For Patients With Glioblastoma Undertaking Adjuvant Chemoradiotherapy, Anna K. Nowak, Robert U. Newton, Travis Cruickshank, Prue Cormie, Georgia K. Halkett, Daphne Tsoi, Daniel A. Galvao

Research outputs 2022 to 2026

Background: While therapeutically effective, chemoradiotherapy treatment for high-grade glioma (glioblastoma) is often accompanied by side effects. Exercise has been demonstrated to alleviate the adverse effects of such treatments in other cancers. We aimed to evaluate the feasibility and preliminary efficacy of supervised exercise incorporating autoregulation. Methods: Thirty glioblastoma patients were recruited, five declined exercise and 25 were provided with a multimodal exercise intervention for the duration of their chemoradiotherapy treatment. Patient recruitment, retention, adherence to training sessions and safety were evaluated throughout the study. Physical function, body composition, fatigue, sleep quality, and quality of life were evaluated before and after …

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 …

Monitoring Of The State Of Speed And Strength Training Of Highly Qualified Handball Players In The Training Process, Alisher Odilovich Abdalimov

Eurasian Journal of Sport Science

Purpose: to determine the attitude of coaches and athletes to the selection of training tools for effective improvement of speed and strength training of highly qualified handball players.

Methods: In order to solve the tasks, set in order to monitor the state of speed and strength training of highly qualified handball players in the training process, we used the questionnaire method.

Results: According to the results of the survey, it was revealed that many coaches do not have enough scientific and theoretical information about the development of speed and strength training. The process of improving the coach's activity is endless, …

Diversified Health-Related Nordic Walking Training Programs And Physical Fitness Of Elderly Women, Monika Wiech, Krzysztof Prusik, Zbigniew Ossowski, Katarzyna Prusik, Jakub Kortas, Hanna Slomska, Lukasz Bielawa

Baltic Journal of Health and Physical Activity

Background: Aging of societies results in the growing number of disabled individuals, although the development of medicine and increasing awareness induce such changes as the modification of eating habits and lifestyle, which help to preserved independence for a longer period of time. Due to this, proposals of effective training programs to maintain physical fitness at a level enabling the efficient functioning in everyday life are sought. Material/Methods: The study group consisted of 60 women aged 60–74 years, participating in 6-month Nordic walking training. The respondents were divided into two groups: GE1, realizing endurance training with strengthening and flexibility exercises and …

Effect Of Training On Morphological, Physiological And Biochemical Variables Of U-19 Soccer Players, Indranil Manna, Gulshan Lal Khanna, Prakash Chandra Dhara

Baltic Journal of Health and Physical Activity

Background: The purpose of the study was to find out the effect of training on selected morphological, physiological and biochemical variables in soccer players under 19 years of age. Material/Methods: A total of 30 Indian male soccer players under 19 years of age (age: 16.00–18.99 yr) volunteered for this study. The training sessions were divided into 2 phases (i) Preparatory Phase (PP, 8 weeks) and (ii) Competitive Phase (CP, 4 weeks). The training programme consisted of aerobic, anaerobic and skill development, and was completed 4 hrs/day; 5 days/week. Selected morphological, physiological and biochemical variables were measured at zero level (baseline …

Association Between Gait Speed And Muscle Mass And Strength In Postmenopausal Women, Zbigniew M. Ossowski, Monika Wiech, Miroslaw Ellwart

Baltic Journal of Health and Physical Activity

Background: ‪Gait speed (GS) is the most popular tool used in clinical practice to diagnose functional performance. In order to maintain the independence of the elderly, it is useful to determine the association between gait speed and skeletal muscle mass, as well as the strength of the lower and upper extremities, which was the aim of this study. Material and methods: ‪The study involved 95 women in the postmenopausal period. The skeletal muscle mass (SM) was determined using a bioelectric impedance method using an octapolar bioimpedance InBody 720 analyzer. Upper limb strength was measured using the handgrip strength (HS) and …

Skeletal Muscle Index And Its Association With Mobility Among Community‐Dwelling Older Women, Zbigniew M. Ossowski

Baltic Journal of Health and Physical Activity

Conclusions: The study findings highlight the complaints of people with moderate myopia compared to people without myopia concerning both their quality of life and musculoskeletal problems.

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 …

Comparison Of Weightlifting, Traditional Resistance Training And Plyometrics On Strength, Power And Speed: A Systematic Review With Meta-Analysis, Stephanie J. Morris, Jon L. Oliver, Jason S. Pedley, G. Gregory Haff, Rhodri S. Lloyd

Research outputs 2022 to 2026

Background:

Weightlifting training (WLT) is commonly used to improve strength, power and speed in athletes. However, to date, WLT studies have either not compared training effects against those of other training methods, or been limited by small sample sizes, which are issues that can be resolved by pooling studies in a meta-analysis. Therefore, the objective of this systematic review with meta-analysis was to evaluate the effects of WLT compared with traditional resistance training (TRT), plyometric training (PLYO) and/or control (CON) on strength, power and speed.

Methods:

The systematic review included peer-reviewed articles that employed a WLT intervention, a comparison group …

Eccentric-Only Versus Concentric-Only Resistance Training Effects On Biochemical And Physiological Parameters In Patients With Type 2 Diabetes, Christine Kudiarasu, Wafina Rohadhia, Yoshihiro Katsura, Tomoko Koeda, Favil Singh, Kazunori Nosaka

Research outputs 2014 to 2021

Background:

The benefits of resistance training for patients with type 2 diabetes (T2D) are well documented; however, the effects of exercise with different muscle contraction types such as eccentric versus concentric contractions on physiological outcomes for this population are not clear. This study compared eccentric-only (ECC) and concentric-only resistance training (CON) to test the hypothesis that ECC would be superior to CON to improve insulin sensitivity, lipid profile, body composition, muscle strength and physical function of patients with T2D.

Methods:

Adults with T2D (50–79 years) were allocated to the ECC (n = 9) or CON group (n = 9). Resistance …

Designing And Evaluating An Intervention To Target Functional Movement, Flexibility, And Strength In Paddle Whitewater Raft Guides, Leah Irwin

All Theses

According to the Outdoor Industry Association (2020), about 3.4 million people across the United States went whitewater-rafting in 2019. The majority of the research on whitewater rafting has focused on guest injuries, with less attention on the whitewater raft guides, who have an arduous job and are at risk for shoulder, back, and hip injuries. In addition to these injuries, rafting guides also experience bilateral imbalances from utilizing a dominant guiding side. One way to prevent these types of injuries and imbalances is to improve functional movement, strength, and range of motion (ROM). The goal of this study was to …

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 Effect Of Training Status On Adaptations To 11 Weeks Of Block Periodization Resistance Training, Alexander Wetmore

Electronic Theses and Dissertations

The primary purpose of this dissertation was to investigate the effect of training status on adaptations to resistance training. A secondary purpose of this dissertation was to investigate the relationship between subjective and objective forms of monitoring resistance training (RT). The benefits of RT are well understood but training status may be a major influence on training outcomes. Fifteen males of various training status were recruited for this study. Subjects completed 11 weeks of block periodization (BP) training. Subjects were tested for absolute strength (ABS) and relative strength (REL) in the barbell back squat, 0kg and 20kg static jumps (SJ) …

Nationwide Children's Hospital Sports Performance, Mackenzie Meyers

Masters Theses/Capstone Projects

During the Advanced Clinical Practicum experience, the student will be exposed to a variety of clinical experiences. The sports performance interns will have the opportunity to work with high school, collegiate and private sector athletes (ranging from 6 to 22 years of age) and also be involved in leading small group sessions and coaching large group sessions. Administratively, the intern will have the opportunity to participate in several teaching/learning sessions per week and be involved in research, data collection and program design.

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, …

Enhancing Adaptions To Neuromuscular Electrical Stimulation Training Interventions, Anthony J. Blazevich, David F. Collins, Guillaume Y. Millet, Marco A. Vaz, Nicola A. Maffiuletti

Research outputs 2014 to 2021

Neuromuscular electrical stimulation (NMES) applied to skeletal muscles is an effective rehabilitation and exercise training modality. However, the relatively low muscle force and rapid muscle fatigue induced by NMES limit the stimulus provided to the neuromuscular system and subsequent adaptations. We hypothesize that adaptations to NMES will be enhanced by the use of specific stimulation protocols and adjuvant interventions.

Inconsistent Use Of Resistance Exercise Names In Research Articles: A Brief Note, James L. Nuzzo

Research outputs 2014 to 2021

Academic fields require standard nomenclature to communicate concepts effectively. Previous research has documented resistance training exercises are named inconsistently. This inconsistent use has been observed among fitness professionals and within resistance training textbooks. The purpose of the current note was to explore inconsistent use of resistance training exercise names in scientific articles. Keyword searches were performed in PubMed to identify articles that referred to 4 different resistance training exercises. The search was limited to titles and abstracts of articles published between 1960 and 2020. For exercise 1, "shoulder press," "overhead press," and "military press" were searched. For exercise 2, "arm …

Body Composition In Elite Strongman Competitors, William J. Kraemer, Lydia K. Caldwell, Emily M. Post, William H. Dupont, Emily R. Martini, Nicholas A. Ratamess, Tunde K. Szivak, Jason P. Shurley, Matthew K. Beeler, Jeff S. Volek, Carl M. Maresh, Janice S. Todd, Bryant J. Walrod, Parker N. Hyde, Ciaran Fairman, Thomas M. Best

Health and Sport Sciences Faculty Scholarship

Kraemer, WJ, Caldwell, LK, Post, EM, DuPont, WH, Martini, ER, Ratamess, NA, Szivak, TK, Shurley, JP, Beeler, MK, Volek, JS, Maresh, CM, Todd, JS, Walrod, BJ, Hyde, PN, Fairman, C, and Best, TM. Body composition in elite strongman competitors. J Strength Cond Res 34(12): 3326–3330, 2020—The purpose of this descriptive investigation was to characterize a group of elite strongman competitors to document the body composition of this unique population of strength athletes. Data were collected from eligible competitors as part of a health screening program conducted over 5 consecutive years. Imaging was acquired using dual-energy x-ray absorptiometry (DXA), providing total …

Recovery Using “Float” From High Intensity Stress On Growth Hormone-Like Molecules In Resistance Trained Men, William J. Kraemer, Lydia K. Caldwell, Emily M. Post, Matthew K. Beeler, Ryan M. Dickerson, Mary J. Kennett, Carl M. Maresh, Wesley C. Hymer

Health and Sport Sciences Faculty Scholarship

Objective

The purpose of this study was to examine the influence of a novel “floatation-restricted environmental stimulation therapy” (floatation-REST) on growth hormone responses to an intense resistance exercise stress.

Design

Nine resistance trained men (age: 23.4 ± 2.5 yrs.; height: 175.3 ± 5.4 cm; body mass: 85.3 ± 7.9 kg) completed a balanced, crossover-controlled study design with two identical exercise trials, differing only in post-exercise recovery intervention (i.e., control or floatation-REST). A two-week washout period was used between experimental conditions. Plasma lactate was measured pre-exercise, immediately post-exercise and after the 1 h. recovery interventions. Plasma iGH was measured pre-exercise, immediately-post …

Greater Fatigue Resistance Of Dorsiflexor Muscles In People With Prediabetes Than Type 2 Diabetes, Jonathon Senefeld, Lynette A. Singh-Peters, Kenji A. Kenno, Sandra K. Hunter, Jennifer M. Jakobi

Exercise Science Faculty Research and Publications

Although exercise can prevent progression to T2D among people with prediabetes, little is known about fatigue during exercise in people with prediabetes compared to T2D. The purpose of the study was to compare the magnitude and mechanisms of fatigability of the ankle dorsiflexor muscles between people with prediabetes and T2D. Ten people with prediabetes (6 females, 51.7 ± 6.9 years) and fourteen with T2D (6 females, 52.6 ± 6.2 years) who were matched for age, body mass index and physical activity performed an intermittent (6 s contraction: 4 s relaxation) fatiguing task at 75% maximal voluntary contraction (MVC) with the …

Functional Training And Blood Flow Restriction: A Perspective View On The Integration Of Techniques, Marzo E. Da Silva-Grigoletto, Ezequias Pereira Neto, David George Behm, Jeremy P. Loenneke, Cauê Vazquez La Scala Teixeira

Faculty and Student Publications

No abstract provided.

The Effect Of Training With Weightlifting Catching Or Pulling Derivatives On Squat Jump And Countermovement Jump Force-Time Adaptations, Timothy J. Suchomel, Shana M. Mckeever, John J. Mcmahon, Paul Comfort

Research outputs 2014 to 2021

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). The purpose of this study was to examine the changes in squat jump (SJ) and countermovement jump (CMJ) force-time curve characteristics following 10 weeks of training with either load-matched weightlifting catching (CATCH) or pulling derivatives (PULL) or pulling derivatives that included force- and velocity-specific loading (OL). Twenty-five resistance-trained men were randomly assigned to the CATCH, PULL, or OL groups. Participants completed a 10 week, group-specific training program. SJ and …

Physical Fitness Improvements Of 8-Week Light Vs. Heavy Tyreflip Training In Young Adults, Del P. Wong, Anthony Weldon, Jake K. Ngo

Faculty of Management & Hospitality (THEi)

This study compared the effects of eight-week tyre flipping training intervention using light and heavy tyres on physical fitness performance. Twenty-nine young physically active males were divided into light (n = 15) and heavy (n = 14) tyre flipping groups evenly according to body weight and height. Body-to-tyre weight ratios were 0.61 ± 0.06 for the light tyre (LTTG) and 1.51 ± 0.16 for the heavy tyre training (HTTG) groups. Fitness parameters were measured before and after the intervention. One-way ANCOVA analysis indicated no significant between-group differences when pre-test values were controlled. Both groups demonstrated within-group improvements in 6RM bench …

Effects Of Load Carriage On Shoulder Neuromuscular Functions And Recovery, Muataz R. Almaddah

Theses and Dissertations--Rehabilitation Sciences

Load carriage is a primary source for injury occurrence among military personnel and recreational hikers affecting all body areas. The shoulder ranks as the second or third most common site of injuries among military personnel. Many studies report that elevations in self-reported fatigue, soreness, and discomfort in the shoulders accompany the load carriage. Almost 50% of military personnel experienced a load carriage injury during the first episode of training, and 75% of those injured suffered a second injury during their career. The goal of this research project is to investigate the components associated with load carriage shoulder symptoms to determine …

Mean Propulsive Velocity Is A Viable Method For Adjusting The Resistance-Training Load At Moderate Altitude, Lara Rodríguez-Zamora, Paulino Padial, Brad Jon Schoenfeld, Belén Feriche

Publications and Research

We examined the viability of using mean propulsive velocity (MPV) to adjust the load in the countermovement jump (CMJ) at moderate altitude. Twenty-four volunteers were assigned to a 4-week power-oriented resistance training (R_T) program in either normoxia (N, 690m) or intermittent hypobaric hypoxia (IH, 2,320m). The load was adjusted to maintain execution velocity of CMJ at 1m·s⁻¹ of MPV. Relative peak power output (P_rel), and percentage of velocity loss throughout the sets (VL) were determined for each session. The internal load was measured by the rating of perceived exertion (RPE). The absolute load lifted was …

Absolute And Relative Handgrip Strength Across Gender, Kinzy Hancock, Weslyn Almond, Meredith Ferguson, Brandon Thoms, Lane Evans

EXSI 432/532: Research Methods in Exercise Science: Research Proposal Posters

The purpose of this study is to evaluate existing differences between absolute and relative handgrip strength in men and women. It was hypothesized that male subjects will exhibit higher absolute hand grip strength, lower %BF, higher FFM, and higher forearm circumference when compared to women. However, men and women will have similar hand grip strength when compared relatively to body composition.