Exercise Physiology Commons^™

Presence Of Observers Increases One Repetition Maximum In College-Age Males And Females, Steven C. Baker, Alan P. Jung, John K. Petrella

International Journal of Exercise Science

Purpose: To determine if the presence of observers affects muscular strength performance in college-age males and females. Methods: Twenty-five women and 24 men participated in the study. Two counter-balanced trials were performed in which participants completed 1-RM tests in bench press and leg press. During one trial, two members of the opposite gender observed the 1-RM tests. During the other trial there were no observers, other than the tester. Results: 1-RM for females increased 3.4±0.8 lbs on bench press (p<.001) and increased 9.2±3.8 lbs on leg press (p=.025) when observers were present. 1-RM for males increased 4.2±1.1 lbs on bench press (p=.001) and increased 18.8±5.2 lbs on leg press (p=.002) with observers present. There was no difference in the percent increase in 1-RM between males and females for either leg press (p=.71) or bench press (p=.08). Conclusion: College-age males and females lifted more weight during a 1-RM test when observers were present.

Ankle Spatting Compared To Bracing Or Taping During Maximal-Effort Sprint Drills, Grant D. Reuter, Angela R. Dahl, David S. Senchina

International Journal of Exercise Science

The purpose of this study was to compare the influences of 4 ankle conditions (no support, bracing, taping, taping + spatting; all in football cleats) during 2 maximal-effort field drills (40-yd dash and 34-yd cutting drill) on perceptions of comfort and stability and performance outcomes. Fourteen young adult males participated. Subjects’ perceptions of comfort and stability were assessed by visual analogue scales after each drill for each ankle condition. Time-to-completion and post-completion heart rate were recorded. For both drills, significant differences in comfort perception were found such that subjects perceived no support as equivocal to bracing but more comfortable than …

Cadence, Stride Rate And Stride Length During Triathlon Competition, Grant J. Landers, Brian A. Blanksby, Timothy R. Ackland

International Journal of Exercise Science

Triathlon research shows cycling alters the physiological response of subsequent running but, at present, biomechanical changes are unresolved. This study examined cycling cadence and running stride rate (SR) and length (SL) used by senior elite triathletes during competition. These variables were then compared to running and triathlon performance.

Data from 51 elite male World Championships triathletes were analysed via video recordings and Video Expert II Coach. Triathletes revealed consistent cadences throughout the majority of the cycle (96.8 +2.7 rpm) and run (90.9 +2.4 rpm) disciplines. However, a cadence increase (99.6 +5.7 rpm) was recorded at the completion of the cycle …

Call Accuracy And Distance From The Play: A Study With Brazilian Soccer Referees, Mario Cesar Oliveira, Rogério Orbetelli, Turíbio L. Barros Neto

International Journal of Exercise Science

Refereeing decisions in soccer has always been a controversial issue. In order to better understand this subject, foul calls made by Brazilian soccer referees were evaluated to determine the potential relationship between the distance from the referee to a foul play and the accuracy of the call. Soccer matches supervised by the São Paulo State Football Federation were recorded and 321 foul calls were analyzed. No significant association was found between the referee’s distance from a foul play and accuracy of the call (p = 0.561). However, there was a significant increase in the number of correct calls in the …

The Effects Of Ellipical Cross Training On Vo2 Max In Recently Trained Runners, Dustin Joubert, Gary Oden, Brent Estes

International Journal of Exercise Science

This study examined the effects of elliptical cross training on VO2max in recently-trained runners. 12 female and 8 male participants (mean  SD; age = 23.70  6.33 years, body mass index = 24.85  5.89 kg/m2) completed an initial four-week run training program, exercising four days/week, 30 minutes/day, at 80% maximal heart rate. VO2max was predicted based on the duration of a Bruce graded-maximal treadmill test (GXT) prior to and after the run training. After initial training phase and post-test, subjects volunteered for the detrain group (n = 6) or were assigned to the run (n = 7) or …

The International Journal Of Exercise Science: 2010 Year In Review, Brian K. Mcfarlin, Thomas S. Lyons, James W. Navalta

International Journal of Exercise Science

The International Journal of Exercise Science: 2010 Year in Review

Neuromuscular Responses Of The Vastus Lateralis To Slow Walking With Vascular Restriction., Robert Cardenas, Charity Cavazos, Jose A. Leal Jr., Yoshiaki Sato, Michael G. Bemben, Murat Karabulut

International Journal of Exercise Science: Conference Proceedings

Motor unit recruitment of individual muscles could substantially differ with changes in speed and load. However, the recruitment patterns associated with low intensity walk training with vascular restriction at sustained loads and constant speed could be different than normal walking. Vascular restricted (VR) walk training is an effective method for increasing muscular strength; however the changes in motor unit recruitment and firing frequency have not been investigated to understand the mechanisms underlying the neuromuscular adaptations. Purpose: The purpose of this study was to analyze differences in electrical activity of the vastus lateralis during VR and non vascular restricted (non-VR) walking …

Agreement Of Health Status Classification And Body Composition Differences In Asian Indian Students Upon Residence In The United States, Hina Garg, G. Richard Grimes, Nestor W. Sherman, Christopher M. Hearon, William W. Edwards

International Journal of Exercise Science: Conference Proceedings

Obesity is one of the major health problems in the United States (U.S.). As Asian Indian students immigrate to the U.S., the effect of acculturation to the U.S. lifestyle is an area of concern. PURPOSE: The purpose of this study was two-fold: 1) examine the health-risk status of Asian Indians with respect to agreement in classifications of percent body fat (PF) and body mass index (BMI), and 2) examine the effects of U.S. residence duration on body composition of Asian Indian college students. METHODS: Forty-two Asian Indian males and females were divided into two groups according to length of residence. …

The Effect Of Concurrent And Terminal Feedback On Vo2max, Mir Alikhan, Rachel M. Brown, Casey Carver, Cecilia Chavez, Kourtney Jones, Emily Krizmanic, T. Scott Marzilli, Amanda Pike, Mark Saroni, Janay Stradley

International Journal of Exercise Science: Conference Proceedings

Concurrent feedback is the continuous provision of information regarding task performance given during the performance, while terminal feedback is the provision of this information only at the conclusion of the task. The following study examined performance on VO2max tests (VO2max, time to exhaustion, HR and RER) using these two types of feedback. Participants consisted of 14 males and 10 females with a mean age of 21.7 ± 2 years. Stratified random sampling was used to assign participants to either concurrent or terminal feedback. The two groups (n=12) were treated to a split-halves-transfer design upon completion of the first test. There …

Profiles Of Coronary Artery Disease Risk In Cardiac Patients: Actual Versus Perceived, Julie A. Borsack, Steve Martin, Kathy L. Hill, Thomas Meade, Becky Braden, Ivan Pereira, Stephen F. Crouse, John S. Green

International Journal of Exercise Science: Conference Proceedings

PURPOSE: To describe interrelations and differences between actual vs. perceived cardiac risk in a cohort of coronary artery disease (CAD) patients. METHODS: 33 females (HT: 164 cm, WT: 80kg) and 67 males (HT: 179 cm, WT: 93kg) with documented CAD completed a questionnaire designed to assess CAD risk perception. They also underwent assessments for all ACSM risk factors. Five-point Likert scale responses to the question “Compared to other persons of your own age and sex, how would you rate your risk of ever having a heart attack?” were used to quantify CAD risk perception. To quantify actual risk, the number …

Effect Of The Power Balance® Band On Static Balance, Hamstring Flexibility, And Arm Strength In Adults, Princessjoy Verdan, Geanina Barna, Anntionette Roquemore, Brad Fenter, T. Scott Marzilli

International Journal of Exercise Science: Conference Proceedings

The purpose of this study was to determine the effect of Power Balance® bands on strength, flexibility, and balance. Strength and flexibility were measured using the MicroFit system. Strength was measured via a bicep curl and flexibility via a sit-and-reach. Balance was measured by the BIODEX System SD. There were four different conditions for the balance test: eyes open on a firm surface (EOFS), eyes closed on a firm surface (ECFS), eyes open on a foam surface (EOFoS), and eyes closed on a foam surface (ECFoS). There were 24 subjects used (10 males and 14 females). A counterbalance, double-blind, placebo, …

Comparison Of Two Types Of Mouse Running Wheels., Greeshma S. Prabhu, David Ferguson, Dr.Timothy Lightfoot

International Journal of Exercise Science: Conference Proceedings

Voluntary wheel running of mice has been used as a measure of physical activity in a multitude of studies. The aim of this study was to validate low profile wireless running wheels (Med Associates Inc.) against solid-surface, traditionally-mounted vertical running wheels. All animal procedures were approved by the Texas A &M IACUC. Eleven week old female C57BL/6J mice (Jackson Labs, Bar Harbor, ME) were randomly assigned to either vertical running wheels (n=5) or low profile running wheels (n=5). Daily distance run was monitored for 12 days following initial wheel orientation exposure. Average daily distance run by the mice was not …

Changes In Power Output In Ncaa Football Linemen During Competitive Season, Quentin C. Posey, Joe W. Priest

International Journal of Exercise Science: Conference Proceedings

Changes in Power Output in NCAA Football Linemen During Competitive Season.

Posey, Q., R. Cole, and J. Priest, Tarleton State University, Stephenville, TX 76402

Introduction

Measuring power is a practice currently being developed by researchers. An available tool is the TENDO Weightlifting Analyzer (TWA). Although the TWA is a common research tool, there is little published research. The purpose of this study is to analyze OL and DL power output during in-season football.

Methods

Experimental Approach

Seventeen NCAA division II football players in the Lone Start Conference were monitored during organized in-season weight training workouts. TWA measured and recorded their …

A Comparison Of Hypertrophy Potential Between The Vastus Lateralis And Rectus Femoris During Level Walking In Combination With Vascular Restriction., Jose A. Leal Jr., Charity Cavazos, Robert Cardenas, Yoshiaki Sato, Bemben G. Michael, Murat Karabulut

International Journal of Exercise Science: Conference Proceedings

Recent research has found that by compressing blood flow to working muscle during lower body exercise involving short bouts of walk training results in an increased muscle volume and improved quadriceps strength. However, the effects of vascular restriction (VR) during walking on neuromuscular adaptations as assessed by electromyography (EMG) activity may provide insight on how low intensity training with vascular restriction can be applied to various modes of exercise. PURPOSE: The purpose of this study was to explore and compare muscle activation changes of the quadriceps muscles during walking using EMG with and without blood flow restriction. METHODS: EMG electrodes …

Aquatic Treadmill Running Reduces Muscle Soreness Following Intense Sprint Exercise In Trained Men, Brad S. Lambert, Charles R. Hewitt, Craig M. Lowrie, Melissa C. Milner, John S. Green, Stephen F. Crouse

International Journal of Exercise Science: Conference Proceedings

Delayed onset muscle soreness is associated with muscle damage, disturbances in proprioception, and decreases in muscular power. The purpose was to determine if short duration aquatic treadmill (ATM) running reduces muscle soreness following intense sprint exercise in trained men. Twenty trained men (180.3±4.4cm, 86.3±5.8kg, 20±1yr) were recruited and randomly divided into two groups: ATM recovery (ATMRec) and passive recovery (PRec). During testing, subjects performed a warm-up followed by sixteen 110yrd cutback runs with a sprint of 60yrds, sharp change of direction, and a return sprint of 50yrds. Work to rest ratio was set at 1:3. Additionally, following exercise, the ATMRec …

Using The Para To Evaluate Physical Activity Resource Attributes In Houston And Austin, Tx, Heather J. Adamus, Scherezade K. Mama, Rebecca E. Lee

International Journal of Exercise Science: Conference Proceedings

Many adults do not achieve recommended levels of physical activity (PA), and ecologic models suggest that environmental factors such as physical activity resources (PARs) may influence PA participation. Attributes of PARs, such as accessibility, features, amenities and incivilities, are related to PA. The Physical Activity Resource Assessment (PARA) is an environmental audit tool to assess the type, size, accessibility, incivilities, amenities and features of a PAR. Using the PARA to explore how incivilities and quality of features and amenities differ by location, size or accessibility is an essential step in understanding which attributes influence PA. The purpose of this study …

Physical Activity Frequency, Independent Of Volume, Is Directly Associated With C-Reactive Protein: Nhanes 2003 – 2006, Geoffrey Whitfield, William Kraus, Harold W. Kohl Iii

International Journal of Exercise Science: Conference Proceedings

Purpose: Physical activity (PA) has shown consistent positive effects on cardiovascular risk, yet the individual contributions of frequency, intensity and duration remain unclear. The purpose of this investigation was to explore the associations between objectively-measured PA frequency and cardiometabolic risk factors, independent of total PA volume.

Methods: Data were analyzed for 5,549 adults with at least four valid days of accelerometry from the 2003 – 2006 US National Health and Nutrition Examination Survey (NHANES). Meeting PA guidelines was defined as 150+ minutes of moderate- to vigorous-intensity PA per week, accumulated in 10+ minute bouts. Frequency was defined as the number …

The Age At Which Children Improve The Most In The 50 Yard Freestyle, Paul Lickteig

International Journal of Exercise Science: Conference Proceedings

As of late there are no studies looking at what age swimmers have the greatest improvements. The early teenage years do see a significant increase in aerobic performances when exercise is introduced properly. The purpose of this study is to determine at what age swimmers improve the most. The USA Swimming website was accessed using http://www.usaswimming.org and the section of the website titled “Swimmers,” was selected, then “Times/Time Standards” was selected on the left hand side of the screen to search through swimmer results for any time period and any age. Data was copied into an Excel file, the ordered …

Effect Of Text Messaging And Cellphone Use On A Multi-Sensory Tracking Task, John-Paul Connell, Carla Brown, Chelsey Hannah, Shane Huff, Dr. Scott Marzilli

International Journal of Exercise Science: Conference Proceedings

This experiment studied subjects’ performance on a continuous multisensory tracking task. Different theories suggest that there is a decrease in performance due to attentional capacity; furthermore, talking or texting on a mobile phone will negatively affect task performance. Twenty-four college-age students were recruited to be tested on the Biodex Balance System SD with the texting condition, talking on a mobile phone condition, and control condition. Results showed that text messaging while performing a continuous multisensory tracking task negatively affected performance. There was no significant difference, however, between the control condition and talking on a mobile phone while completing the task. …

Community Support, School Health Programs, And Effective Management On Childhood Obesity, Ling Zhu, Breanca Thomas

International Journal of Exercise Science: Conference Proceedings

No Abstract

Introducing “Symbolic Weightism”: Discourses Of Agency And Morality In Obesity Stigma, Meredith B. Stockton

International Journal of Exercise Science: Conference Proceedings

Title: INTRODUCING “SYMBOLIC WEIGHTISM”: DISCOURSES OF AGENCY AND MORALITY IN OBESITY STIGMA

Author: Meredith B. Stockton, MS

Affiliations: Institute of Social Psychology, London School of Economics and Political Science

Purpose: With the increasing obesity rates in the United States and the United Kingdom, the number of weight-based discrimination cases continues to rise. This study compares obesity stigma to racial stigma, a link first proposed by Crandall (1994), to frame weight-based discrimination as an equally legitimate and severe form of prejudice. Method: Using a social psychological perspective, a thematic and critical discourse analysis was conducted on 170 YouTube video comments and …

Is There Less Access To Quality Grocery Stores In Minority And Poor Neighborhoods In Houston, Texas?, Chin-Hsing Chen, Lei Zhou, Deborah Banerjee, Monica Slentz

International Journal of Exercise Science: Conference Proceedings

Purpose: There has been an enormous increase in obesity and diet-related diseases in the past decade. Limited access to nutritious foods and easier access to unhealthy foods is believed to be among those at fault. However, access to healthy foods, although studied extensively, does not have a standard measure and is conceptualized in multiple ways by researchers. The relationships between availability of quality grocery store and the socio-demographic profile of the neighborhood are not well understood, particularly in an ethnically and socially diverse city, such as Houston. Our study aims to explore the relationships between distribution of small, medium or …

Engaging Latino Adolescent Girls In Physical Activity Intervention Planning In A Low-Income, Urban Environment, Laura A. Esparza, Daisy Y. Morales-Campos, Cynthia M. Mojica, Deborah Parra- Medina

International Journal of Exercise Science: Conference Proceedings

Purpose: Latino adolescent girls are less physically active than the general adolescent population, which puts them at increased risk for obesity and chronic disease. The Physical Activity Partnership for Girls (PG) uses a community-based participatory research approach to assess community needs and priorities related to physical activity (PA) behaviors of middle school girls living in low-income, urban sectors of San Antonio, Texas. Input was sought from girls, parents, and youth-serving agencies serving the community to inform the development of an innovative PA intervention utilizing low-cost, mobile technology (texting) and social media that will be delivered through Girl Scout troops. We …

Know Your Audience: Designing A Nutrition Education Game For Middle School Kids, Vinod Srinivasan, Lars Doucet, Christine Shimek, Cynthia A. Warren, Carol J. Spaulding, Kimberly Paulhill, Catherine J. Mcneal, John David Coppin

International Journal of Exercise Science: Conference Proceedings

Purpose: In recent years video games have emerged as potential tools to tackle obesity. Games that use motion-sensing controllers and interfaces are often used to promote physical activity. Games are also used to impart education about diet, nutrition and health. Our goal in this project is to address childhood obesity through the design, development and implementation of a video game to teach nutrition concepts to middle-school-aged children.

Method: Our target audience is middle-school students in a low-income neighborhood in Dallas. To guide us in the game design, we collected data about students’ gaming preferences through surveys, focus groups and student …

Neighborhood Safety And Attractiveness Influence Physical Activity Among African American And Hispanic Or Latina Women, Angela M. Ho, Scherezade K. Mama, Ashley V. Medina, Rebecca E. Lee

International Journal of Exercise Science: Conference Proceedings

Introduction: Although the benefits of adopting physical activity (PA) are well publicized, physical inactivity rates remain high, and African American and Hispanic or Latina women do less PA compared to white women. Many interventions have begun to focus on conveniently performed lifestyle PA, such as walking. The purpose of this study was to investigate the relationship between neighborhood safety and attractiveness and PA in a sample of African American (AA) and Hispanic or Latina (HL) women participating in Health Is Power (1R01CA109403). Method: Women (AA N=202 and HL N=107) who enrolled in the study were middle-aged (M=45.8 years), overweight (M …

Items On A Perceived Environment Tool Are Grouped Differently In Low And High Income African American Women, Heather J. Adamus, Scherezade K. Mama, Rebecca E. Lee

International Journal of Exercise Science: Conference Proceedings

Purpose: Prevalence of physical inactivity is greater in African American (AA) women than any other population sub group. The neighborhood environment is an important influence on physical activity, and accurate measurement of neighborhood perceptions is needed to determine the influence of neighborhood environment on physical activity. The purpose of this study was to investigate the stability of constructs represented by items from the International Prevalence Study (IPS) environmental module among high and low income AA women. Method: African American women (N=387) completed the IPS environmental module questionnaire which measured perception of neighborhood environment. A principle component analysis with varimax rotation …

Internet-Based Intervention To Improve Dietary Habits In Women Of Color: Saving Lives Staying Active (Salsa), Jacqueline N. Dinh, Christopher P. Sunseri, Scherezade K. Mama, Ashley V. Medina, Rebecca E. Lee, Lorna Mcneill

International Journal of Exercise Science: Conference Proceedings

Background: The Internet is an inexpensive method to distribute information that spans large distances. With 2/3 of the country currently overweight or obese, the Internet is the obvious choice to delivering health information to those that need it most. Purpose: The aim of this study was to determine the effectiveness of an Internet-based intervention to increase fruit and vegetable (FV) and decrease fat consumption in women of color. Method: Women (N=50) were middle-aged (M=41.2 years, SD=9.6), overweight (M=29.6 kg/m2, SD=5.3) and well educated (74% were college graduates). Participants completed measures of FV and fat consumption at 4 time points (spaced …

Association Of Fat And Alcohol Consumption With Physical Activity Among Obese Women Of Color, Ygnacio Lopez Iii, Scherezade K. Mama, Ashley V. Medina, Rebecca E. Lee

International Journal of Exercise Science: Conference Proceedings

African American (AA) and Hispanic or Latina (HL) women are highly vulnerable to obesity and related conditions. Although it has been suggested increasing physical activity (PA) may lead to weight loss and consuming high fat foods and alcohol may contribute to weight gain, it is not clear how increased PA may be associated with improved dietary habits (DH). The purpose of this study was to determine whether increased PA was associated with decreased fat and alcohol consumption among AA and HL women participating in Health Is Power (1R01CA109403). Method: One hundred fifty-eight overweight or obese women (102 AA, 56 HL; …

Obesity And Physical Activity Variance By Income And Ethnicity In Kansas City, Katie M. Heinrich, Ws Carlos Poston, Nui Jitnarin, Anthony Randles, Joseph Hughey, Laverne Berkel, C Keith Haddock

International Journal of Exercise Science: Conference Proceedings

Purpose: Although obesity and physical activity prevalence systematically vary by income and ethnicity, it is unclear how well census data represent actual conditions. Using data from the Kansas City Built Environment and Health Study, we examined whether differences in measured obesity prevalence and self-reported physical activity would systematically vary by both census block group median income and percent ethnic minority and self-reported income and ethnicity. Methods: Participants included 586 adults; average age 45±14.7. Most participants were female (69.8%), married (51.5%), had some college or more (72.7%) and had incomes ≤$60,000 (54.6%). Households were solicited from 21 census block groups, stratified …

Lessons Learned From Juntos Y Saludables Peer-Led Parent Education, Daisy Escamilla, Desiree Acosta, Bonnie Dillon, Rebecca Adeigbe, Deborah Parra- Medina, Meizi He, Amelie G. Ramirez, Zenong Yin, Erica T. Sosa

International Journal of Exercise Science: Conference Proceedings

Purpose: The objective of this study was to assess the quality of training received by peer educators in the Juntos y Saludables (Get Healthy Together) program. Juntos y Saludables is a multi-component childhood obesity prevention program for Head Start. Method: This study applied the peer led education approach to provide parents with education regarding healthy growth among their children. Seven parents were recruited through teachers, other parents, and the Parent Leadership Institute at a local Head Start center. Faculty and graduate assistants from local universities provided training to the parent educators in both English and Spanish. Training sessions were conducted …