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Pengaruh Latihan Squat Menggunakan Free Weight Dan Gym Machine Terhadap Kekuatan, Power, Dan Hypertrophy Otot, Lia Karina Mansur, Joko Pekik Irianto, Mansur Mansur

Jurnal Keolahragaan

Penelitian ini bertujuan untuk menguji pengaruh latihan squat menggunakan free weight dan gym machine terhadap kekuatan, power, dan hypertrophy otot; dan menguji perbedaan pengaruh latihan squat menggunakan free weight dan gym machine terhadap kekuatan, power, dan hypertrophy otot. Penelitian ini adalah penelitian eksperimen dengan desain two group pretest-posttest design. Sampel dalam penelitian ini dipilih berdasarkan teknik random sampling berjumlah 32 orang. Instrumen untuk mengukur kekuatan menggunakan back and leg dynamometer merk Takei buatan Jepang. Instrumen untuk mengukur power menggunakan Jump Duration of Fright (JDF) seri TKK 5114 buatan Jepang, satuan sentimeter. Instrumen untuk mengukur lingkar otot paha …

Effect Of Multiple Knots In Close Proximity On Southern Pine Lumber Properties, Marcela Cordeiro Barbosa

Theses and Dissertations

This research investigates the effect that knots in close proximity have on strength properties of southern pine lumber. The project involved specimens of 2×4 dimension southern yellow pine lumber exhibiting multiple knots in close proximity. Knot dimensions were measured to determine the knot diameter (KD) parallel to the cross-section of the specimen, knot area (KA), and clear wood (CW). In addition, the density (D) using the entire specimen weight by volume was determined. A third-point bending test was used in a flatwise orientation to quantify the modulus of rupture (MOR) and modulus of elasticity (MOE). The relationships between the simple …

Dare Mighty Things, Lisa Packard

Children's Book and Media Review

Cassandra is only too willing to join the elite of the elite, competing for a chance to go into space. It's what she has dreamed of her whole life. During the competition, she makes new friends and allies, something that she has never had before. By the end of the competition, she is ranked number two, which is devastating, but Luka, rank number one, still believes in her and wants her to keep pushing herself beyond her limits. A couple of weeks before the launch, Luka opts out, leaving Cassandra as the number one going to space. The space crew …

Development Of Environmentally-Friendly Stabilization Methods For Transportation Infrastructure Based On Geopolymers, Miladin Radovic, Anand Puppala

Data

Corresponding data set for Tran-SET Project No. 17GTTAM02. Abstract of the final report is stated below for reference:

"Geopolymers (GPs) have received much attention as an eco-friendly and sustainable alternative to conventional chemical additives, since they can be processed at room temperatures from aqueous solutions by utilizing waste materials (e.g. fly ash) or abundant natural sources (e.g. clay). A collaborative research study is carried out by teams from Texas A&M University (TAMU) and University of Texas at Arlington (UTA) to investigate the effectiveness of GPs for stabilizing base and subgrade materials by considering the strength and shrink-swell characteristics. Two types …

Resilience Of Nigerian Widows In The Face Of Harmful Widowhood Practices In Southwest Nigeria: An Interdisciplinary Analysis, Esosa Mohammed

Electronic Theses and Dissertations

Widows in Nigeria endure adverse and traumatic practices that affect their health, well-being, and rights as women. After decades of struggle and resistance against persistent widowhood practices, this study sought to portray in Nigerian widows, hidden strengths, resilience, and agency rather than their vulnerability and powerlessness. Analysis of secondary scholarship, interviews, and survey questionnaires reveal that some Nigerian widows are able to cope even as they navigate through the challenges and trauma of demeaning and stressful practices. The results also demonstrate that the ability to cope and thrive under stress and adversity links not only to an individual’s personal growth …

Seated Exercise Compared To Standing Exercise In Improving Strength And Endurance In Community-Dwelling Seniors., Karly Zelaska

Kinesiology Student Research

INTRODUCTION: Wellness and preventive exercise programs are being introduced and becoming more prevalent in senior-living communities. These programs are put in place to reduce the recurring costs of hospitalizations and medical services, as well as to maintain or improve independence in these populations. Oftentimes, chair-based exercises are used to perform resistance training because of the ease, simplicity, and safety that they provide to these senior residents. Many studies have explored the effects that a variety of aerobic and strengthening programs have on improving balance and reducing fall risk in seniors, what remains unanswered is whether doing seated or standing exercises …

Re-Evaluating What We “Know” About Female Athletes In Biomechanics Research: Across The Continuum From Capacity To Skill, Sophia Nimphius

ISBS Proceedings Archive

Data from recent research around gender bias as a result of lack of control for physical capacity measures or skill assessment. Research data and case studies will be used to determine if we really “know” what we’ve said about the biomechanics of female athletes and what we might consider when putting forward recommendations based on these conclusions. The overall premise will be to remind ourselves as sports biomechanists that although we should have an expertise, we need to also be an excellent generalist to do our job well, especially in the applied environment where we see bias on both ends …

A Pilot Investigation Into Force Production In Tethered Swimming As An Individual Monitoring Tool, Thomas Wackwitz, Simon Pearson

ISBS Proceedings Archive

Gaining an understanding of the physical capabilities and capacities that underpin the performance of a complex skill are important to help guide performance development at the elite level. The purpose of this study was to improve understanding of the force generating characteristics that relate to performance in elite swimmers. Three elite butterfly swimmers were tested over six weeks to examine the interactions between force-derived variables from 30 s of maximal tethered swimming and maximal 50m swimming performance, both performed using the butterfly stroke. Mean force, peak force and impulse per stroke all displayed very strong relationships with 50m swim time …

The Relationship Between Dry-Land Resistance Training And Start Performance In Competitive Swimming: A Brief Review, Shiqi Thng, Simon Pearson, Justin Keogh

ISBS Proceedings Archive

The purpose of this study was to review the literature on the relationship between dry-land resistance training and swim start performance in competitive swimming. It is common practice in competitive swimming to use dry-land resistance training to increase muscular strength and power. Given the explosive nature of the swim start, it would appear that high levels of lower body muscular strength and power are necessary to enhance this component in swimming. Performance in total body jumping exercises shared a stronger relationship to start performance than single joint exercises. This may reflect the requirement for force and power to be developed …

Return-To-Play Criteria Following Acl Reconstruction Surgery: A Case Study Over Nine-Months, Steven Leigh

ISBS Proceedings Archive

This case study investigated changes in an injured athlete’s function, gait kinematics and parameters, and strength over nine months of ACL rehabilitation. The participant completed laboratory assessments at 6, 12, 24, and 36 weeks post-op, which included a functional outcome questionnaire, a gait evaluation with an electromagnetic tracking system and force plates, and a strength test with an isokinetic dynamometer. Left to right side differences in function, gait kinematics and parameters, and strength were assessed non-parametrically. Results indicated persistent strength disparities and dysfunction at terminal knee extension, even when return-to-play was approved clinically. Kinematics may be useful to guide a …

A Targeted Load-Carriage Training Program Elicits Positive Adaptations After 10-Weeks, Jodie A. Wills, David J. Saxby, Daniel J. Glassbrook, Tim L.A Doyle

ISBS Proceedings Archive

The purpose of this study was to identify and characterise physical performance responses to a targeted 10-week load-carriage physical training intervention in males. Performance measures of maximal strength, heart rate, rating of perceived exertion, and basic fitness from nine male civilians before and after the 10-week training intervention are presented. There were significant increases in maximal force (~200 N) and aerobic performance (Level. Shuttle 8.9 vs 9,4 variables). Small-to-large effect sizes were shown for basic fitness and perceptual responses. The 10-week load-carriage physical training intervention elicited physical performance improvements and may facilitate load-carriage task performance.

Effects Of An Aqueous Extract Of Withania Somnifera On Strength Training Adaptations And Recovery: The Star Trial, Tim N. Ziegenfuss, Anurag W. Kedia, Jennifer E. Sandrock, Betsy J. Raub, Chad Kerksick, Hector L. Lopez

Faculty Scholarship

Withania somnifera (Ashwagandha) is an Ayurvedic herb categorized as having “rasayana” (rejuvenator), longevity, and revitalizing properties. Sensoril® is a standardized aqueous extract of the roots and leaves of Withania somnifera. Purpose: To examine the impact of Sensoril^® supplementation on strength training adaptations. Methods: Recreationally active men (26.5 ± 6.4 years, 181 ± 6.8 cm, 86.9 ± 12.5 kg, 24.5 ± 6.6% fat) were randomized in a double-blind fashion to placebo (PLA, n = 19) or 500 mg/d Sensoril^® (S500, n = 19). Body composition (DEXA), muscular strength, power, and endurance, 7.5 km cycling time trial, and clinical blood …

Fungi: A Neglected Candidate For The Application Of Self-Healing Concrete, Congrui Jin, Rui Yu, Zhonghe Shui

Department of Civil and Environmental Engineering: Faculty Publications

Self-healing mechanism in concrete has been so far achieved mainly by three approaches: autogenous healing, encapsulation of polymeric material, and biologically induced mineralization of calcium carbonate. The microbial approach prevails over the other two approaches due to the high compatibility between the filler material and the concrete compositions. Although the term “microbe” refers to many different types of organisms, research work on self-healing concrete has been so far restricted to bacteria. In this perspective article, we review the current status of bacteria-mediated self-healing concrete and summarize the prospects for future advances. In particular, we point out that fungi may have …

Development Of Environmentally-Friendly Stabilization Methods For Transportation Infrastructure Based On Geopolymers, Miladin Radovic, Anand Puppala

Publications

Geopolymers (GPs) have received much attention as an eco-friendly and sustainable alternative to conventional chemical additives, since they can be processed at room temperatures from aqueous solutions by utilizing waste materials (e.g. fly ash) or abundant natural sources (e.g. clay). A collaborative research study is carried out by teams from Texas A&M University (TAMU) and University of Texas at Arlington (UTA) to investigate the effectiveness of GPs for stabilizing base and subgrade materials by considering the strength and shrink-swell characteristics. Two types of clay, obtained from the North Dallas area, were mixed with a potassium-based GP synthesized from metakaolin and …

Coir Fiber Reinforced Concrete, Jose De La Serna, Moses Karakouzian

AANAPISI Poster Presentations

This poster exhibits the testing and research done on general Portland Cement Concrete with the addition of coir (coconut) fibers as reinforcement. Using the fundamental constituents of cement (water, cement, fine and coarse aggregate) and processed coir fiber, concrete specimens were batched to test for compressive and flexural strengths (per appropriate ASTM standards). Cylindrical and rectangular beam specimens were subjected to loadings until failure occurred. The capacity and modes of failures of the specimens were observed. It was determined that:

• The addition of processed coir fibers decreases the overall strength of general Portland Cement Concrete. • The tested concrete’s …

Functional And Skeletal Muscle Impairments In Progressive Diabetic Ckd, Daniel Bittel

Arts & Sciences Electronic Theses and Dissertations

1-in-3 persons with type 2 diabetes (T2DM) develop chronic kidney disease (CKD), which is characterized by progressive renal dysfunction leading to end-stage renal disease. In response to elevated blood glucose and systemic inflammation of diabetes, a process of active thickening of the renal glomerular basement membrane ensues with concomitant damage to the structural supports (podocytes) of the kidneyճ filtration barrier. This results in impaired renal filtration. The metabolic sequelea of T2DM and CKD also, synergistically, alter skeletal muscleճ degradative pathways, satellite cell function (muscle reparative cells), and mitochondrial health (muscle energetic machinery) -- resulting in muscle breakdown, poor muscle quality, …

Force-Time Differences Between Ballistic And Non-Ballistic Half-Squats, Timothy J. Suchomel, Christopher B. Taber, Christopher J. Sole, Michael H. Stone

ETSU Faculty Works

The purpose of this study was to examine the force-time differences between concentric-only half-squats (COHS) performed with ballistic (BAL) or non-ballistic (NBAL) intent across a range of loads. Eighteen resistance-trained men performed either BAL or NBAL COHS at 30%, 50%, 70%, and 90% of their one repetition maximum (1RM) COHS. Relative peak force (PF) and relative impulse from 0–50 ms (Imp50), 0–90 ms (Imp90), 0–200 ms (Imp200), and 0–250 ms (Imp250) were compared using a series of 2 × 4 (intent × load) repeated measures ANOVAs with Bonferroni post hoc tests. Cohen’s d effect sizes were calculated to provide measures …

Developing Strategies To Toughen Bio-Inspired Adhesives, Narelli P. Narciso, Samuel Lee Huntington, Jonathan J. Wilker

The Summer Undergraduate Research Fellowship (SURF) Symposium

Mussels and other marine creatures adhere very well in underwater environments, having the ability to withstand the force of the sea. These animals have inspired synthetic biomimetic adhesives for wet systems, presenting potential for biomedical applications. However, most current commercial adhesives tend to be brittle, not resisting repetitive movements. This study assesses toughening strategies to improve the mussel-inspired adhesives’ ductility while maintaining its strength. The strategies included altering the polymer’s chemical structure by changing the percentage of polyethylene glycol (PEG) in the molecule and by adding fillers, such as calcium carbonate, silica and nacre - a calcium carbonate compound found …

Effects Of Isokinetic Eccentric Versus Traditional Lower Body Multiple-Joint Resistance Training On Muscle Function In Recreationally Trained College-Aged Adults, Joshua P. Gordon

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Purpose: Early adaptations of eccentric training show several advantages over concentric training. The purpose of this study was to quantify the effects of 4 weeks of multi-joint eccentric training versus traditional leg press training on muscle strength, rate of torque development (RTD; rapid strength) and jump and sprint performance adaptations.

Methods: Twenty-six resistance trained college-aged men and women performed either an eccentric or a traditional (control) resistance training program twice per week for 4 weeks. Single-joint isometric maximum and rapid strength (Biodex dynamometer; peak torque and RTD, respectively) and isokinetic strength of the knee extensors and flexors, maximum multi-joint eccentric …

Issn Exercise & Sports Nutrition Review Update: Research & Recommendations, Chad M. Kerksick, Colin D. Wilborn, Michael D. Roberts, Abbie Smith-Ryan, Susan M. Kleiner, Ralf Jäger, Rick Collins, Matthew Cooke, Jaci N. Davis, Elfego Galvan, Mike Greenwood, Lonnie M. Lowery, Robert Wildman, Jose Antonio, Richard B. Kreider

Faculty Scholarship

Background

Sports nutrition is a constantly evolving field with hundreds of research papers published annually. In the year 2017 alone, 2082 articles were published under the key words ‘sport nutrition’. Consequently, staying current with the relevant literature is often difficult.

Methods

This paper is an ongoing update of the sports nutrition review article originally published as the lead paper to launch the Journal of the International Society of Sports Nutrition in 2004 and updated in 2010. It presents a well-referenced overview of the current state of the science related to optimization of training and performance enhancement through exercise training and …

A Study Of Effect Of Bond Length On Bond Strength Using Transient Heat Transfer Analysis, Junaid Mohamed Baig

Mechanical and Aerospace Engineering Theses

It is important to understand the mechanical properties of the bonding between the adjacent layers of 3D printed parts build by fused deposition modeling. The bonding process is highly nonlinear and depends on various geometrical and thermal process parameters. This work aims to quantify the degree of bonding by calculating bond potential between the extruded layers using finite element heat transfer analysis. Successive transient analysis were carried out using this model by constantly updating the boundary conditions and geometric model during the deposition of the extruded bead. Temperatures at critical points were calculated over a period to calculate the bond …

Multi-Ingredient Pre-Workout Supplements, Safety Implications, And Performance Outcomes: A Brief Review, Patrick S. Harty, Hannah A. Zabriskie, Jacob L. Erickson, Paul E. Molling, Chad M. Kerksick, Andrew R. Jagim

Faculty Scholarship

In recent years, a new class of dietary supplements called multi-ingredient pre-workout supplements (MIPS) has increased in popularity. These supplements are intended to be taken prior to exercise and typically contain a blend of ingredients such as caffeine, creatine, beta-alanine, amino acids, and nitric oxide agents, the combination of which may elicit a synergistic effect on acute exercise performance and subsequent training adaptations compared to single ingredients alone. Therefore, the purpose of this article was to review the theoretical rationale and available scientific evidence assessing the potential ergogenic value of acute and chronic ingestion of MIPS, to address potential safety …

Repetition-To-Repetition Differences Using Cluster And Accentuated Eccentric Loading In The Back Squat, John P. Wagle, Christopher B. Taber, Aaron J. Cunanan, Matt L. Sams, Alexander Wetmore, Garett E. Bingham, Brad H. Deweese, Kimitake Sato, Charles A. Stuart, Michael H. Stone

Exercise Science Faculty Publications

The current investigation was an examination of the repetition-to-repetition magnitudes and changes in kinetic and kinematic characteristics of the back squat using accentuated eccentric loading (AEL) and cluster sets. Trained male subjects (age = 26.1 ± 4.1 years, height = 183.5 ± 4.3 cm, body mass = 92.5 ± 10.5 kg, back squat to body mass ratio = 1.8 ± 0.3) completed four load condition sessions, each consisting of three sets of five repetitions of either traditionally loaded straight sets (TL), traditionally loaded cluster sets (TLC), AEL cluster sets (AEC), and AEL straight sets where only the initial repetition had …

Repetition-To-Repetition Differences Using Cluster And Accentuated Eccentric Loading In The Back Squat, John P. Wagle, Christopher B. Taber, Kevin M. Carroll, Aaron J. Cunanan, Matt L. Sams, Alexander Wetmore, Garett E. Bingham, Brad H. Deweese, Kimitake Sato, Charles A. Stuart, Michael H. Stone

ETSU Faculty Works

The current investigation was an examination of the repetition-to-repetition magnitudes and changes in kinetic and kinematic characteristics of the back squat using accentuated eccentric loading (AEL) and cluster sets. Trained male subjects (age = 26.1 ± 4.1 years, height = 183.5 ± 4.3 cm, body mass = 92.5 ± 10.5 kg, back squat to body mass ratio = 1.8 ± 0.3) completed four load condition sessions, each consisting of three sets of five repetitions of either traditionally loaded straight sets (TL), traditionally loaded cluster sets (TLC), AEL cluster sets (AEC), and AEL straight sets where only the initial repetition had …

Rehearsal Injuries In Soft-Soled Character Shoes: Injury Rate Of Female Collegiate Dancers Wearing Soft-Soled Character Shoes With 2.5 Or 3.0 Inch Heels In Musical Theatre Rehearsals, Evelyn Vaughan

Honors College Theses

High-heeled shoes (HHS) have been known to present biomechanical imbalances in lower-leg mechanics at the pedestrian level, but have not been thoroughly studied in the context of highly dynamic movement, such as dance. In order to analyze the effects of 2.5-inch and 3.0-inch soft-soled character shoes (CS) worn by female collegiate musical theatre dancers during rehearsals, selected subjects completed a written questionnaire, the star balance excursion test, and a heel raise test. It was predicted that both heel heights would promote irregularities in subjects’ sense of balance and lower leg stamina, while 3.0 inch CS would cause greater rates of …

Methods Matter: The Relationship Between Strength And Hypertrophy Depends On Methods Of Measurement And Analysis, Andrew D. Vigotsky, Brad J. Schoenfeld, Christian Than, J. Mark Brown

Publications and Research

Purpose: The relationship between changes in muscle size and strength may be affected by both measurement and statistical approaches, but their effects have not been fully considered or quantified. Therefore, the purpose of this investigation was to explore how different methods of measurement and analysis can affect inferences surrounding the relationship between hypertrophy and strength gain.

Methods: Data from a previous study—in which participants performed eight weeks of elbow flexor training, followed by an eight-week period of detraining—were reanalyzed using different statistical models, including standard between-subject correlations, analysis of covariance, and hierarchical linear modeling.

Results: The associative relationship between strength …

Returners Exhibit Greater Jumping Performance Improvements During A Peaking Phase Compared With New Players On A Volleyball Team, Caleb D. Bazyler, Satoshi Mizuguchi, Ashley A. Kavanaugh, John J. Mcmahon, Paul Comfort, Michael H. Stone

ETSU Faculty Works

Purpose: To determine if jumping-performance changes during a peaking phase differed among returners and new players on a female collegiate volleyball team and to determine which variables best explained the variation in performance changes.

Methods: Fourteen volleyball players were divided into 2 groups—returners (n = 7) and new players (n = 7)—who completed a 5-wk peaking phase prior to conference championships. Players were tested at baseline before the preseason on measures of the vastus lateralis cross-sectional area using ultrasonography, estimated back-squat 1-repetition maximum, countermovement jump height (JH), and relative peak power on a force platform. Jumping performance, rating of perceived …

Changes In Sebt Scores In College Basketball Players Participating In A Preventative Ankle Program, Haley Potters, Jennifer Miller, Kurt Wilson

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

In volume 4, Issue 1 of the JSMAHS you will find Professional Research Abstracts, as well as Bachelor Student Research Abstracts and Case Reports.

Thank you for viewing this 4^th Annual OATA Special Edition

The Importance Of Carbohydrate Timing During High-Intensity Training While Consuming A Low Carbohydrate Diet, Benjamin Michael Krings

Theses and Dissertations

The effects of low carbohydrate (CHO), high fat (LCHF) diets on adaptations to high-intensity exercise have recently gained interest. Consuming a LCHF may potentially decrease the ability to use CHO during exercise and impair high-intensity exercise adaptations. Therefore, the purpose of this investigation was to examine the importance of CHO timing while consuming a LCHF diet and completing a high-intensity exercise program. Eighteen resistance trained males were randomized into two treatment groups. Both groups completed 6 weeks of a high-intensity exercise training program with the first 2 weeks serving as familiarization to resistance training (RT) 3 days per week and …

Effects Of Triphasic Training On Strength And Power On Men's Volleyball Players, Grant Kastelan

Theses

Triphasic training is a method popularized by Cal Dietz (Dietz & Peterson, 2012) which includes three different phases: accumulation, transmutation, and realization. Different goals are set for each phase with power development being the overarching theme. During the accumulation phase, the training block is split into the three muscle actions eccentric, isometric, and concentric. During each phase, one action is the emphasis of the program. The purpose of this study was to examine the effects of the accumulation phase of the triphasic training program on collegiate men's volleyball players I-Repetition Max strength, vertical jump, and isometric force. Additionally, the researcher …