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Full-Text Articles in Life Sciences
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
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 …
Challenging The Accuracy Of A Single-Test Lactate Threshold Protocol In Collegiate Rowers, Erica A. Soma, Michael M. Lockard, Stasinos Stavrianeas
Challenging The Accuracy Of A Single-Test Lactate Threshold Protocol In Collegiate Rowers, Erica A. Soma, Michael M. Lockard, Stasinos Stavrianeas
International Journal of Exercise Science
Elite rowers use lactate threshold (LT) estimates as a basis for training intensity in order to achieve the greatest training volume. For convenience, LT is usually determined in a maximal LT/VO2max test. This simultaneous test is problematic because it requires a large power increment, which may not give the most accurate LT. PURPOSE: To challenge the validity of a simultaneous LT/VO2max test to estimate LT in rowers. METHODS: Collegiate rowers (n=20, 16F and 4M, age 19.3±1.3 years, height 171.5±7.1 cm, weight 70±14 kg, VO2max 44.6±5.5 ml•kg-1•min-1) performed two LT tests. Participants completed an incremental VO2max test with 3-minute intervals increasing …
The Impact Of A Pilot Community Intervention On Health-Related Fitness Measures In Overweight Children, Jenny G. Hutchens, Jennifer L. Caputo, Janet M. Colson, Richard S. Farley, Matthew S. Renfrow, Eric P. Seguin
The Impact Of A Pilot Community Intervention On Health-Related Fitness Measures In Overweight Children, Jenny G. Hutchens, Jennifer L. Caputo, Janet M. Colson, Richard S. Farley, Matthew S. Renfrow, Eric P. Seguin
International Journal of Exercise Science
The purpose of this study was to pilot a 5-week community-based intervention on improving measures of health-related fitness in overweight children. Data were obtained from 8 overweight and obese 8- to 14-year-old children. Measurements included muscular fitness (curl-ups and modified pull-ups), aerobic capacity (20 meter progressive aerobic cardiovascular endurance run [PACER] test), body composition (tricep and calf skinfolds), body mass index (BMI), and flexibility (back saver sit-and-reach). A significant reduction in BMI was observed at post-test compared to baseline (p = .03). There was a significant decrease in body fat at post-test for boys (p = .013).
Does A Physical Education Bout Alter Percent Body Fat And The Adiposity Health Risk Classification When Using Leg-To-Leg Bioelectrical Impedance Analysis In Girls?, Elise Fitzgerald, Angela Fatool, Curt B. Dixon, Joseph L. Andreacci
Does A Physical Education Bout Alter Percent Body Fat And The Adiposity Health Risk Classification When Using Leg-To-Leg Bioelectrical Impedance Analysis In Girls?, Elise Fitzgerald, Angela Fatool, Curt B. Dixon, Joseph L. Andreacci
International Journal of Exercise Science
Purpose: The purposes of this investigation were to determine: 1) whether a structured in-school physical education exercise bout altered percent body fat (%BF) determined by leg-to-leg bioelectrical impedance analysis (LBIA); and 2) whether the potential exercise-induced %BF magnitude of change altered the health risk classification of the child. Methods: Seventy-six girls (age: 12.2 ± 1.0 yr; height: 153.9 ± 7.5 cm; body mass: 51.9 ± 15.5 kg; BMI: 21.7 ± 5.4 kg/m2) participated in this investigation. LBIA measured %BF values were obtained immediately before and within five minutes after completing a structured, in-school, physical education class. Results: Significant reductions (p < 0.0001) in mean %BF (25.0 ± 10.2 vs. 24.4 ± 10.3 %) were observed for the group following the physical education class. For the majority of the girls (88%), the %BF alteration was less than ± 2.0 %BF. More specifically, the %BF magnitude of change was ± 1.0 %BF in 64.5% of the girls, between 1.1 and 2.0 %BF in 23.7% of the girls, and by more than 2.0 %BF in 11.8% of the girls. Regardless of the %BF magnitude of change, all girls remained in the same adiposity classification category (healthy vs. unhealthy body fat) following exercise. Conclusion: Adhering to the pre-test exercise guideline appears unnecessary when using LBIA to categorize the health risk of an adolescent girl.
Monitoring Training Load In Indian Male Swimmers., Pralay Majumdar Dr., Sri Vidhya Jr.
Monitoring Training Load In Indian Male Swimmers., Pralay Majumdar Dr., Sri Vidhya Jr.
International Journal of Exercise Science
The present study was taken up to monitor the training load and the impact of training load to the hormone concentrations such as testosterone, cortisol and T/C (Testosterone/Cortisol) ratio during the three phases of training viz preparatory phase, pre-competitive phase and competitive phase in Indian male swimmers. Blood samples were collected at the completion of each phase and the hormone concentrations were quantified. Our results reveal that the testosterone and T/C ratio significantly decreases whereas cortisol increases in the subsequent periodised cycle and concludes that the hormone concentration changes with the intensity and duration of exercise i.e. when the intensity …
Asymmetry Of Force Fluctuation During Low Intensity Isometric Contraction In Leg Muscle, Kazushige Oshita†, Sumio Yano‡
Asymmetry Of Force Fluctuation During Low Intensity Isometric Contraction In Leg Muscle, Kazushige Oshita†, Sumio Yano‡
International Journal of Exercise Science
Int J Exerc Sci 3(2) : 68-77, 2010. The purpose of this study was to investigate the asymmetry of force fluctuation in the leg muscles during isometric knee extension and flexion. Twenty healthy males (21±2 years) performed the maximal voluntary isometric contraction (MVC) in knee extensor and flexor. On the basis of MVC measurement, the subjects performed sustained isometric knee extension and flexion for 15s at levels corresponding to 10%, 20% and 30% MVC. The main findings of this study were: (1) a greater force fluctuation was found in the stronger MVC limb than in the weaker MVC limb at …
Effect Of The E3 Fitness Grips On Running Economy, Julie A. Szabo*, Brian B. Parr‡, Jarod A. Holt*, Christopher M. Dewitt‡
Effect Of The E3 Fitness Grips On Running Economy, Julie A. Szabo*, Brian B. Parr‡, Jarod A. Holt*, Christopher M. Dewitt‡
International Journal of Exercise Science
Int J Exerc Sci 3(2) : 64-67, 2010. The purpose of this study was to evaluate the effect of the E3 Fitness Grips (BioGrip, Inc., Rancho Cordova, CA) on running economy, as measured by oxygen uptake (VO2), and heart rate (HR) during submaximal treadmill running. Eleven subjects, seven female and four male, completed a submaximal running test on a treadmill while VO2 and HR were measured continuously. After achieving steady-state at a speed and grade that elicited a VO2 equivalent to 70% VO2max, the subjects ran for five minutes holding the E3 Fitness Grips (G) and five minutes without the …
A Culturally Friendly Web-Based Hybrid Intervention To Prevent Obesity: The Salsa Study, Scherezade K. Mama, Ashley V. Medina, Raul Orlando Edwards, Lorna Mcneill, Ygnacio Lopez Iii, Rebecca E. Lee
A Culturally Friendly Web-Based Hybrid Intervention To Prevent Obesity: The Salsa Study, Scherezade K. Mama, Ashley V. Medina, Raul Orlando Edwards, Lorna Mcneill, Ygnacio Lopez Iii, Rebecca E. Lee
International Journal of Exercise Science: Conference Proceedings
No Abstract
Speed And Agility Prediction Models In High School Football Players, James J. Tufano, William E. Amonette, A. Eugene Coleman, Terry L. Dupler, Troy Wenzel
Speed And Agility Prediction Models In High School Football Players, James J. Tufano, William E. Amonette, A. Eugene Coleman, Terry L. Dupler, Troy Wenzel
International Journal of Exercise Science: Conference Proceedings
Background: Optimal relationships between speed, agility, power and body mass are essential in American football. An increase in body mass, theoretically, reduces acceleration (Newton’s 2nd Law). However, an increase in lean body mass may enhance overall force or power generating potential and momentum of an athlete. Body mass, height, and vertical jump height are routinely measured, easily obtainable, and may be used as predictors of speed and agility. Purpose: To determine associations between height, vertical jump height, and body mass to speed and agility in high school football players. Methods: Data were collected on 1261 male football players (16.4±0.9yrs, 179.7±6.9cm, …
Accuracy Of Rt3 Accelerometer And Sensewear Armband To Estimate Free-Living Energy Expenditure, Elisabeth I. Cavegn, George A. King
Accuracy Of Rt3 Accelerometer And Sensewear Armband To Estimate Free-Living Energy Expenditure, Elisabeth I. Cavegn, George A. King
International Journal of Exercise Science: Conference Proceedings
Devices that estimate energy expenditure (EE), such as the RT3 accelerometer and the SenseWear (SW) Armband, are a convenient way to assess free-living activity, as they store multiple days of data. Purpose: This study evaluated the ability of the RT3 accelerometer and the SW Armband to accurately estimate the total EE of adults under free-living conditions compared to indirect calorimetry (IC). Methods: A total of three men and six women [mean (SD) age: 30.9 (16.6) y; height: 168.3 (10.2) cm; body mass: 64.2 (10.4) kg; BMI: 22.5 (1.8) kg/m2] participated in this study. Each participant wore the RT3 accelerometer at …
Walking Class Step Average, Step Intensity, Distance Covered And Leisure Physical Activity Of College Students, Kimberly D. Tallent
Walking Class Step Average, Step Intensity, Distance Covered And Leisure Physical Activity Of College Students, Kimberly D. Tallent
International Journal of Exercise Science: Conference Proceedings
PURPOSE. The purpose of this study was to examine the relationship between stepping levels in and outside of a prescribed walking class and leisure time physical activity (PA) of college students. METHOD. Participants in the study were twenty three male (n = 9) and female (n = 14) enrolled in a walking class that met Monday through Friday for five weeks during the summer. Students completed the short version of the International Physical Activity Questionnaire (IPAQ) at the beginning and end of the course and followed the prescribed walking times during class. Step counts were ascertained both in and outside …