Life Sciences Commons^™

Coconut Inflorescence Sap Enhances Exercise Performance And Plasma Antioxidant Status In Young Active Men, Ashish Joseph, Svenia P. Jose, Bintu T. Kalyan, Renny R. Mammen, I. M. Krishnakumar, Bradley S. Fleenor, Ratheesh Mohan

Kinesiology and Health Promotion Faculty Publications

Purpose
Nutrition has been increasingly recognized as a key component to optimal sports performance. Though several botanical agents have been reported to possess ergogenic potential, there exists a great interest for tasty and safe natural substances as performance boosters. In the present contribution, the ergogenic potential of a novel powder form of coconut inflorescence sap (CSP) was investigated for the first time.

Method
Out of the fourteen participants recruited, twelve recreationally active men completed the single-blinded, placebo-controlled, crossover study for 8 weeks. Running based anaerobic sprint test (RAST) and 2.4 km running test were performed as anaerobic and aerobic tests, …

Applications Of The Critical Power Model To Dynamic Constant External Resistance Exercise: A Brief Review Of The Critical Load Test, Haley C. Bergstrom, Taylor K. Dinyer, Pasquale J. Succi, Caleb C. Voskuil, Terry J. Housh

Kinesiology and Health Promotion Faculty Publications

The study and application of the critical power (CP) concept has spanned many decades. The CP test provides estimates of two distinct parameters, CP and W′, that describe aerobic and anaerobic metabolic capacities, respectively. Various mathematical models have been used to estimate the CP and W′ parameters across exercise modalities. Recently, the CP model has been applied to dynamic constant external resistance (DCER) exercises. The same hyperbolic relationship that has been established across various continuous, whole-body, dynamic movements has also been demonstrated for upper-, lower-, and whole-body DCER exercises. The asymptote of the load versus repetition relationship is defined as …

Sequential Order Of Swing Phase Initiation In Baseball, Ethan Stewart, Megan Stewart, Jeffrey Simpson, Adam Knight, Harish Chander, Robert Shapiro

Kinesiology and Health Promotion Faculty Publications

In order to successfully hit a baseball, hitters must utilize a series of preparatory movements (swing phases) which include shifting their body weight, stepping, landing, and swinging. The purpose of this study was to examine the differences between start times for swing phases (shifting, stepping, landing, and swinging)for currently active baseball players. Participants (n = 12) were all current collegiate baseball athletes. Retroreflective markers, surface electromyography (EMG) and two force platforms were utilized to complete a swing analysis. Each participant completed five swinging trials off a tee. All dependent variables were compared using a repeated measures 1×4 ANOVA with …

Examination Of Curcumin And Fenugreek Soluble Fiber Supplementation On Submaximal And Maximal Aerobic Performance Indices, Jensen Goh, Walter Menke, Lauren P. Herrick, Marilyn S. Campbell, Mark G. Abel, Bradley S. Fleenor, Haley C. Bergstrom

Kinesiology and Health Promotion Faculty Publications

This study examined the effects of curcumin and fenugreek soluble fiber supplementation on the ventilatory threshold (VT) and peak oxygen consumption (VO₂ peak). Methods: Forty-five untrained men and women were randomly assigned to one of three supplementation groups: placebo (PLA, n = 13), 500 mg·day⁻¹ CurQfen^® (CUR, n = 14), or 300 mg·day⁻¹ fenugreek soluble fiber (FEN, n = 18). Participants completed a maximal graded exercise test on a cycle ergometer to determine the VT and VO₂ peak before (PRE) and after (POST) 28 days of daily supplementation. Separate, one-way analyses of covariance (ANCOVAs) were …

Arterial Stiffness During Whole-Body Passive Heat Stress In Healthy Older Adults, Zachary J. Schlader, Yoshiyuki Okada, Stuart A. Best, Qi Fu, Craig G. Crandall

Kinesiology and Health Promotion Faculty Publications

We tested the hypothesis that whole‐body passive heat stress reduces arterial stiffness in older adults. At preheat stress (baseline) and when core temperature was elevated by 0.6 ± 0.2°C (mild) and 1.2 ± 0.3°C (moderate), arterial stiffness was measured in eight healthy younger (26 ± 5 years) and eight healthy older (70 ± 4 years) adults in the supine position. Arterial stiffness was estimated from carotid‐to‐femoral pulse wave velocity (cfPWV, applanation tonometry). cfPWV was higher at baseline in older adults (8.8 ± 2.3 m/sec vs. 5.6 ± 0.9 m/sec, P < 0.01) and this difference was maintained throughout passive heat stress (P < 0.01). cfPWV did not change (P ≥ 0.49) with passive heat stress in either …

Walking With A Robotic Exoskeleton Does Not Mimic Natural Gait: A Within-Subjects Study, Chad Swank, Sharon Wang-Price, Fan Gao, Sattam Almutairi

Kinesiology and Health Promotion Faculty Publications

Background: Robotic exoskeleton devices enable individuals with lower extremity weakness to stand up and walk over ground with full weight-bearing and reciprocal gait. Limited information is available on how a robotic exoskeleton affects gait characteristics.

Objective: The purpose of this study was to examine whether wearing a robotic exoskeleton affects temporospatial parameters, kinematics, and muscle activity during gait.

Methods: The study was completed by 15 healthy adults (mean age 26.2 [SD 8.3] years; 6 males, 9 females). Each participant performed walking under 2 conditions: with and without wearing a robotic exoskeleton (EKSO). A 10-camera motion analysis system synchronized with 6 …

Comparison Between Kinetic And Kinetic-Kinematic Driven Knee Joint Finite Element Models, Paul O. Bolcos, Mika E. Mononen, Ali Mohammadi, Mohammadhossein Ebrahimi, Matthew S. Tanaka, Michael A. Samaan, Richard B. Souza, Xiaojuan Li, Juha-Sampo Suomalainen, Jukka S. Jurvelin, Juha Töyräs, Rami K. Korhonen

Kinesiology and Health Promotion Faculty Publications

Use of knee joint finite element models for diagnostic purposes is challenging due to their complexity. Therefore, simpler models are needed for studies where a high number of patients need to be analyzed, without compromising the results of the model. In this study, more complex, kinetic (forces and moments) and simpler, kinetic-kinematic (forces and angles) driven finite element models were compared during the stance phase of gait. Patella and tendons were included in the most complex model, while they were absent in the simplest model. The greatest difference between the most complex and simplest models was observed in the internal-external …

The Effect Of Coronal Prosthetic Alignment Changes On Socket Reaction Moments, Spatiotemporal Parameters, And Perception Of Alignment During Gait In Individuals With Transtibial Amputation, Hiroshi Hashimoto, Toshiki Kobayashi, Fan Gao, Masataka Kataoka, Kuniharu Okuda

Kinesiology and Health Promotion Faculty Publications

Introduction: The alignment of a prosthesis is clinically determined based on observations by clinicians and the subjective perception of amputees during gait. However, this process has been reported to be unreliable. Socket reaction moment has been reported to be significantly impacted by alignment changes, but the impact of these alignment changes on other gait parameters is unclear. The aim of this study was to investigate the effects of coronal alignment changes of a transtibial prosthesis on socket reaction moment, spatiotemporal parameters, and perceptions of alignment during gait in amputees.

Methods: Nine individuals with transtibial amputation participated in this study. Socket …

Statewide Dissemination And Implementation Of Physical Activity Standards In Afterschool Programs: Two-Year Results, Michael W. Beets, R. Glenn Weaver, Keith Brazendale, Gabrielle Turner-Mcgrievy, Ruth P. Saunders, Justin P. Moore, Collin Webster, Mahmud Khan, Aaron Beighle

Kinesiology and Health Promotion Faculty Publications

Background: In 2015, YMCA afterschool programs (ASPs) across South Carolina, USA pledged to achieve the YMCA physical activity standard calling for all children to accumulate 30 min of moderate-to-vigorous physical activity (MVPA) while attending their ASPs. This study presents the final two-year outcomes from the dissemination and implementation efforts associated with achieving this MVPA standard.

Methods: Twenty ASPs were sampled from all South Carolina YMCA-operated ASPs (N = 97) and visited at baseline (2015) and first (2016) and second year (2017) follow-up. All ASPs were provided training to increase MVPA during the program by extending the scheduled time for …

Examination Of Resistance Settings Based On Body Weight For The 3-Minute All-Out Critical Power Test, Marlene J. Schulte, Jody L. Clasey, Bradley S. Fleenor, Haley C. Bergstrom

Kinesiology and Health Promotion Faculty Publications

There are conflicting suggestions regarding the most valid resistance (3-5% of body weight) to use for the critical power (CP) 3-min all-out (CP_3min) test to estimate CP and anaerobic work capacity (AWC). The purpose of this study was to determine if the CP and AWC estimates from the CP_3min test were affected by the percentage of body weight used to set the resistance on a Monark cycle ergometer. Ten recreationally trained participants (mean ± SD: Age: 22.2 ± 2.2 yrs.) completed the CP_3min test at resistances of 4.5% (CP_4.5%) and 3% (CP_3%) …

Effects Of Very Short-Term Dynamic Constant External Resistance Exercise On Strength And Barbell Velocity In Untrained Individuals, M. Travis Byrd, Haley C. Bergstrom

Kinesiology and Health Promotion Faculty Publications

This study examined the effect of an upper body dynamic constant external resistance (DCER) exercise (barbell bench press [BP]), using the very short-term training (VST) model on strength and barbell velocity. Ten (5 females, 5 males) subjects (mean ± SD age: 21.4 ± 2.8 yrs; height: 1.75 ± 0.12 m; body mass: 83 ± 8.8 kg) completed two pre-test visits (pre-test 1 and pre-test 2) to serve as the within subjects control, three training visits, and one post-test visit. The subject’s 1 repetition maximum (1RM) for the BP as well as the mean (BP_MV) and peak (BP_{PV …}

How Feedback And Goal-Setting Impact Children's Recess Physical Activity, Ryann Koufoudakis, Heather Erwin, Aaron Beighle, Michelle L. Thornton

Kinesiology and Health Promotion Faculty Publications

In recent years, schools desire to promote physical activity (PA) for their students but are restricted due to resources being expended in other areas of their curriculum, including standardized testing preparation. Recess/lunch periods have potential to contribute important amounts of PA to youth’s overall levels. Interventions to maximize PA during recess are warranted. The purpose of this study was to demonstrate the impact of feedback and goal-setting on students’ PA during recess. A sample of 136 (67 females, 69 males) 4^th and 5^th grade students in the Southeast United States wore unsealed Walk4Life pedometers during recess for one …

Testing Multi-Theory Model (Mtm) In Predicting Initiation And Sustenance Of Physical Activity Behavior Among College Students, Vinayak K. Nahar, Manoj Sharma, Hannah Priest Catalano, Melinda J. Ickes, Paul Johnson, M. Allison Ford

Kinesiology and Health Promotion Faculty Publications

Background: Most college students do not adequately participate in enough physical activity (PA) to attain health benefits. A theory-based approach is critical in developing effective interventions to promote PA. The purpose of this study was to examine the utility of the newly proposed multi-theory model (MTM) of health behavior change in predicting initiation and sustenance of PA among college students.

Methods: Using a cross-sectional design, a valid and reliable survey was administered in October 2015 electronically to students enrolled at a large Southern US University. The internal consistency Cronbach alphas of the subscales were acceptable (0.65-0.92). Only those who did …

Individual Responses For Muscle Activation, Repetitions, And Volume During Three Sets To Failure Of High- (80% 1rm) Versus Low-Load (30% 1rm) Forearm Flexion Resistance Exercise, Nathaniel D. M. Jenkins, Terry J. Housh, Samuel L. Buckner, Haley C. Bergstrom, Kristen C. Cochrane, Cory M. Smith, Ethan C. Hill, Richard J. Schmidt, Joel T. Cramer

Kinesiology and Health Promotion Faculty Publications

This study compared electromyographic (EMG) amplitude, the number of repetitions completed, and exercise volume during three sets to failure of high- (80% 1RM) versus low-load (30% 1RM) forearm flexion resistance exercise on a subject-by-subject basis. Fifteen men were familiarized, completed forearm flexion 1RM testing. Forty-eight to 72 h later, the subjects completed three sets to failure of dumbbell forearm flexion resistance exercise with 80% (n = 8) or 30% (n = 7) 1RM. EMG amplitude was calculated for every repetition, and the number of repetitions performed and exercise volume were recorded. During sets 1, 2, and 3, one …

Short-Term, High-Fat Diet Accelerates Disuse Atrophy And Protein Degradation In A Muscle-Specific Manner In Mice, Steven L. Roseno, Patrick R. Davis, Lance M. Bollinger, Jonathan J. S. Powell, Carol A. Witczak, Jeffrey J. Brault

Kinesiology and Health Promotion Faculty Publications

BACKGROUND: A short-term high-fat diet impairs mitochondrial function and the ability of skeletal muscle to respond to growth stimuli, but it is unknown whether such a diet alters the ability to respond to atrophy signals. The purpose of this study was to determine whether rapid weigh gain induced by a high-fat (HF) diet accelerates denervation-induced muscle atrophy.

METHODS: Adult, male mice (C57BL/6) were fed a control or HF (60 % calories as fat) diet for 3 weeks (3wHF). Sciatic nerve was sectioned unilaterally for the final 5 or 14 days of the diet. Soleus and extensor digitorum longus …

Global School-Based Childhood Obesity Interventions: A Review, Melinda J. Ickes, Jennifer Mcmullen, Taj Haider, Manoj Sharma

Kinesiology and Health Promotion Faculty Publications

Background: The issue of childhood overweight and obesity has become a global public health crisis. School-based interventions have been developed and implemented to combat this growing concern. The purpose of this review is to compare and contrast U.S. and international school-based obesity prevention interventions and highlight efficacious strategies.

Methods: A systematic literature review was conducted utilizing five relevant databases. Inclusion criteria were: (1) primary research; (2) overweight or obesity prevention interventions; (3) school-based; (4) studies published between 1 January 2002 through 31 December 2013; (5) published in the English language; (6) child-based interventions, which could include parents; and …

School Day Segmented Physical Activity Patterns Of High And Low Active Children, Stuart J. Fairclough, Aaron Beighle, Heather Erwin, Nicola D. Ridgers

Kinesiology and Health Promotion Faculty Publications

BACKGROUND: Variability exists in children's activity patterns due to the association with environmental, social, demographic, and inter-individual factors. This study described accelerometer assessed physical activity patterns of high and low active children during segmented school week days whilst controlling for potential correlates.

METHODS: Two hundred and twenty-three children (mean age: 10.7 ± 0.3 yrs, 55.6% girls, 18.9% overweight/obese) from 8 north-west England primary schools wore ActiGraph GT1M accelerometers for 7 consecutive days during autumn of 2009. ActiGraph counts were converted to minutes of moderate (MPA), vigorous (VPA) and moderate-to-vigorous (MVPA) physical activity. Children were classified as high active (HIGH) or …

A Systematic Review Of Physical Activity Interventions In Hispanic Adults, Melinda J. Ickes, Manoj Sharma

Kinesiology and Health Promotion Faculty Publications

Healthy People 2020 aims to achieve health equity, eliminate disparities, and improve the health of all groups. Regular physical activity (PA) improves overall health and fitness and has the capability to reduce risk for chronic diseases. Identifying barriers which relate to the Hispanic population is important when designing PA interventions. Therefore, the purpose was to review existing PA interventions targeting Hispanic adults published between 1988 and 2011. This paper was limited to interventions which included more than 35% Hispanic adults (n = 20). Most of the interventions were community based (n = 16), although clinical, family-based, and faith-based …

Differential Neuromuscular Training Effects On Acl Injury Risk Factors In"High-Risk" Versus "Low-Risk" Athletes, Gregory D. Myer, Kevin R. Ford, Jensen L. Brent, Timothy E. Hewett

Kinesiology and Health Promotion Faculty Publications

BACKGROUND: Neuromuscular training may reduce risk factors that contribute to ACL injury incidence in female athletes. Multi-component, ACL injury prevention training programs can be time and labor intensive, which may ultimately limit training program utilization or compliance. The purpose of this study was to determine the effect of neuromuscular training on those classified as "high-risk" compared to those classified as "low-risk." The hypothesis was that high-risk athletes would decrease knee abduction moments while low-risk and control athletes would not show measurable changes.

METHODS: Eighteen high school female athletes participated in neuromuscular training 3x/week over a 7-week period. Knee kinematics and …