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International Journal of Exercise Science

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https://www.readbyqxmd.com/read/27990228/90-minutes-of-moderate-intensity-exercise-does-not-attenuate-postprandial-triglycerides-in-older-adults
#1
Nathaniel G Bodell, Trevor Gillum
To determine whether 90 minutes of moderate-intensity exercise, prior to a high fat meal, attenuates postprandial triglycerides (PPT) in older adults. Eight sedentary older adult volunteers (mean ± SD age = 58 ± 8 years, BMI 26.5 ± 4.2); completed two trials consisting of exercise and a no-exercise control. Exercise trials involved 90 minutes of moderate-intensity exercise 60% heart rate reserve (HRR). Following exercise, an overnight fast of 12-16 hours was performed. Participants were given a high fat meal that consisted of 146 grams of CHO, and 92 grams of fat and instructed to rest...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27990227/effects-of-a-pre-workout-energy-drink-supplement-on-upper-body-muscular-endurance-performance
#2
Mitchel A Magrini, Ryan J Colquhoun, J Jay Dawes, Doug B Smith
The use of pre-workout beverages is becoming an increasingly common method of improving performance during exercise in athletic and recreationally active populations. Therefore, the purpose of this study was to investigate the effects of a commercially available energy drink on exercise performance. Thirty-one healthy males (n=23) and females (n=8) participated in this study and were separated into two groups: supplement (SU; n=16) or placebo (PL; n=15). Subjects visited the laboratory on 2 occasions separated by no more than 7 days...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27990226/the-effects-of-eccentric-velocity-based-training-on-strength-and-power-in-collegiate-athletes
#3
Samantha M Dolezal, Derek L Frese, Tamra L Llewellyn
The purpose of this study was to determine if combining velocity-based training with eccentric focus (VEB) and velocity-based training (VBT) results in power and strength gains. Nineteen men and women collegiate track and field athletes participated in this study. The subjects completed a 12-week intervention with either a VEB program or a VBT program. To determine the effectiveness of each program, the subjects completed four exercise tests before and after the training period: vertical jump, medicine ball put test, 1RM projected bench press and 1RM projected squat...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27990225/quantifying-inter-segmental-coordination-during-the-instep-soccer-kicks
#4
Yumeng Li, Marion Alexander, Cheryl Glazebrook, Jeff Leiter
In order to generate a high ball speed in soccer, the inter-segmental coordination of the kicking leg is critical. The purpose of this study was to quantify the coordination between the thigh and shank movement in the sagittal plane during instep kicks. Eleven female soccer players were video recorded using a high-speed (80 Hz) video camera during penalty kicks. Hip, knee and ankle joint centers of the right leg were digitized, and the movement was analyzed using Dartfish TeamPro (6.0). The thigh and shank segment angles were generated, and the coordination was quantified using the cross-correlation and the vector coding method...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27990224/the-relationship-between-aerobic-and-anaerobic-performance-in-recreational-runners
#5
Zachary M Gillen, Frank B Wyatt, Jason B Winchester, Dalton A Smith, Vidhi Ghetia
Research has indicated that combined aerobic and anaerobic training (concurrent training) may improve aerobic performance greater than aerobic training alone. The purpose of this investigation was to establish any associations between aerobic and anaerobic performance. Eleven participants (n = 11, age = 34.1 ± 13 years, VO2max = 58.4 ± 7.8) volunteered for this study. Participants were asked for endurance training experience (4.7 ± 3.7 years) and resistance training experience (4.1 ± 4.6 years). To meet training status, participants were to have a VO2max in the 80(th) percentile as per ACSM guidelines...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27990223/effects-of-acute-vaporized-nicotine-in-non-tobacco-users-at-rest-and-during-exercise
#6
Donovan L Fogt, Michael A Levi, Caroline A Rickards, Steven P Stelly, William H Cooke
Smokers, and even non-smokers, may utilize vaporized nicotine delivered by electronic cigarette (EC) due to the perception that EC are "healthier" than traditional tobacco cigarettes. The effects of vaporized nicotine delivered by EC on resting blood pressure (BP) and resting metabolic rate (RMR), or BP and aerobic power during exercise have not been studied. This investigation tested the effects of acute vaporized nicotine inhalation by EC on resting BP and RMR and cycle exercise BP, metabolic responses, and aerobic power in young, normotensive non-smokers...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27990222/spatial-awareness-is-related-to-moderate-intensity-running-during-a-collegiate-rugby-match
#7
Kyle S Beyer, David H Fukuda, Amelia M Miramonti, Mattan W Hoffman, Ran Wang, Michael B LA Monica, Josh J Riffe, Satoru Tanigawa, Jeffrey R Stout, Jay R Hoffman
The purpose of the present study was to evaluate the relationship between spatial awareness, agility, and distance covered in global positioning system (GPS) derived velocity zone classifications during a collegiate rugby match. Twelve American collegiate rugby union players (mean±SD; age: 21.2±1.4 y; weight: 85.0±16.0 kg; 7 forwards & 5 backs) on a single team volunteered to participate in this investigation. The distances travelled at low (walking/jogging; <2.7m/s), moderate (cruising/striding; 2.7-5...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27990221/polycystic-ovary-syndrome-presents-higher-sympathetic-cardiac-autonomic-modulation-that-is-not-altered-by-strength-training
#8
Victor B Ribeiro, Gislaine S Kogure, Rosana M Reis, Ada C Gastaldi, João E DE Araújo, José H Mazon, Audrey Borghi, Hugo C D Souza
Polycystic ovary syndrome (PCOS) may present important comorbidities, such as cardiovascular and metabolic diseases, which are often preceded by changes in cardiac autonomic modulation. Different types of physical exercises are frequently indicated for the prevention and treatment of PCOS. However, little is known about the effects of strength training on the metabolic, hormonal, and cardiac autonomic parameters. Therefore, our aim was to investigate the effects of strength training on the autonomic modulation of heart rate variability (HRV) and its relation to endocrine-metabolic parameters in women with PCOS...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27990220/effect-of-music-tempo-on-attentional-focus-and-perceived-exertion-during-self-selected-paced-walking
#9
Aldo Coelho Silva, Sandro Dos Santos Ferreira, Ragami Chaves Alves, Lucio Follador, Sergio Gregorio DA Silva
This study investigated the influence of music on the rating of perceived exertion (RPE) and attentional focus during walking at a self-selected pace. Fifteen overweight and obese women volunteered to participate in the study. They underwent four sessions: the first for incremental maximal test and anthropometric measurement followed by three experimental sessions. After the first session, they were exposed to three 30-minute walking sessions at a self-selected pace in a counterbalanced order: fast-tempo music (FT), medium-tempo music (MT) and no-music control (NM)...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27990219/acute-effects-of-walking-with-nordic-poles-in-persons-with-mild-to-moderate-low-back-pain
#10
Landon P Revord, Karen V Lomond, Peter V Loubert, Roger L Hammer
Regular walking with or without Nordic poles is effective over time at reducing discomfort in individuals with chronic low back pain (LBP). Nordic pole use increases balance and stability, distributes weight through the arms and torso, and decreases loading of the spine and lower limbs. The purpose of this study was to determine if Nordic poles would reduce perceived acute discomfort while self-paced walking in individuals with LBP. We also examined whether walking with or without poles increased heart rate (HR) and ratings of perceived exertion (RPE) or speed of movement...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27766136/effect-of-an-acute-bout-of-kettlebell-exercise-on-glucose-tolerance-in-sedentary-men-a-preliminary-study
#11
Samantha Greenwald, Edward Seger, David Nichols, Andrew D Ray, Todd C Rideout, Luc E Gosselin
Impaired glucose tolerance can have significant health consequences. The purposes of this preliminary study were to examine whether a single session of kettlebell exercise improves acute post-exercise glucose tolerance in sedentary individuals, and whether it was as effective as high-intensity interval running. Six sedentary male subjects underwent a two-hour oral glucose tolerance test following three different conditions: 1) control (no exercise); 2) kettlebell exercise (2 sets of 7 exercises, 15 repetitions per exercise with 30 seconds rest between each exercise); or 3) high-intensity interval running (10 one-minute intervals at a workload corresponding to 90% VO2max interspersed with one-minute active recovery periods)...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27766135/sex-differences-in-time-perception-during-self-paced-running
#12
Nicholas J Hanson, Janet Buckworth
Time perception during exercise may be affected by chosen intensity, and may also affect enjoyment of exercise and subsequent long-term adherence. However, little is known about how individuals perceive the passage of time during exercise, or if factors such as sex are influential. The purpose of this study was to determine if there are sex related differences in perception of time during a bout of exercise in experienced runners. Twenty-two recreational runners (11 men, 11 women) participated in a bout of treadmill running where they were allowed to select their intensity...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27766134/carotid-artery-imt-blood-pressure-and-cardiovascular-risk-factors-in-males-and-females
#13
Christina M Cromwell, Kristin R Aichele, Joyann E Oakman, Michael P Neal, Jessica M Lenzo, Avery N Perez, Naomi L Bye, Erica L Santaniello, Jessica A Hill, Rachel C Evans, Karla A Thiele, Lauren N Chavis, Allyson K Getty, Tia R Wisdo, Deborah L Feairheller
Previous studies have investigated carotid artery intima-media thickness (IMT) and blood pressure and found a direct correlation between the two. It is known that adult females have better cardiovascular health than males until a certain stage of life, yet limited research has examined gender differences in vascular function. Thus, the purpose of this study was to investigate vascular structure and function, blood pressure, and blood glucose/cholesterol levels in relation to gender differences in young healthy adults...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27766133/the-effect-of-a-moderately-low-and-high-carbohydrate-intake-on-crossfit-performance
#14
Kurt A Escobar, Jacobo Morales, Trisha A Vandusseldorp
CrossFit is a metabolically demanding strength and conditioning method which performance may benefit from a carbohydrate (CHO)-rich diet. This study investigated the effect of three consecutive days of high CHO intake on CrossFit performance and corresponding metabolically -related variables in strength trained individuals. Eighteen subjects with a CHO intake of <6 g/kg/day were randomly assigned into a CHO (n = 9) or control (C) group (n =9) and underwent a 9-day training protocol. During days 1, 5, and 9, performance was measured as repetitions completed during a 12 minute CrossFit workout...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27766132/physical-fitness-and-self-image-an-evaluation-of-the-exercise-self-schema-questionnaire-using-direct-measures-of-physical-fitness
#15
Jafra D Thomas, J Mark Vanness, Bradley J Cardinal
The purpose of this study was to perform a construct validity assessment of Kendzierski's exercise self-schema theory questionnaire using objective measures of health-related physical fitness. This study tested the hypothesis that individuals with an exercise self-schema would possess significantly greater physical fitness than those who did not across three domains of health-related physical fitness: Body composition, cardiovascular fitness, and upper-body muscular endurance. Undergraduate student participants from one private university on the west coast of the United States completed informed consent forms and the exercise self-schema questionnaire within a classroom setting or at an on-campus outside tabling session...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27766131/eight-weeks-of-kettlebell-swing-training-does-not-improve-sprint-performance-in-recreationally-active-females
#16
Michael E Holmstrup, Brock T Jensen, William S Evans, Emily C Marshall
The kettlebell swing (KBS), emphasizing cyclical, explosive hip extension in the horizontal plane, aligns with movement- and velocity-specificity of sprinting. The present study examined the effect of an eight-week KBS intervention on sprinting in recreationally-active females, in comparison to an eight-week intervention using the stiff-legged deadlift (SDL). Following a pre-testing session measuring 30 meter sprint and countermovement vertical jump performance, participants were divided evenly by sprint time into KBS (n=8) and SDL (n=10) cohorts...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27766130/inter-investigator-reliability-of-anthropometric-prediction-of-1rm-bench-press-in-college-football-players
#17
Richard M Schumacher, Jana L Arabas, Jerry L Mayhew, William F Brechue
The purpose of this study was to determine the effect of inter-investigator differences in anthropometric assessments on the prediction of one-repetition maximum (1RM) bench press in college football players. Division-II players (n = 34, age = 20.4 ± 1.2 y, 182.3 ± 6.6 cm, 99.1 ± 18.4 kg) were measured for selected anthropometric variables and 1RM bench press at the conclusion of a heavy resistance training program. Triceps, subscapular, and abdominal skinfolds were measured in triplicate by three investigators and used to estimate %fat...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27766129/adolescents-perception-of-the-psychosocial-factors-affecting-sustained-engagement-in-sports-and-physical-activity
#18
James Gavin, Madeleine McBrearty, Kit Malo, Michael Abravanel, Tatiana Moudrakovski
The purpose of this study was to explore adolescents' perceptions of psychosocial influences - personal characteristics, environmental factors and behavioural undertakings - influencing their prolonged involvement in sports and physical activity (PA). A qualitative approach was adopted wherein 16 adolescents (8 boys, 8 girls; mean age 15.9 years), who had been physically active for at least the last 8 years, and sixteen adults identified as their 'parents' or 'guardians' participated in semi-structured interviews...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27766128/the-effect-of-skinfold-on-the-assessment-of-the-mean-power-frequency-at-the-fatigue-threshold
#19
Alyssandra N Baniqued, Jorge M Zuniga, Thomas C Strunc, Katie M Keenan, Agrini K Boken, Jeffrey J Anderson
The purpose of this study was to determine if the amount of subcutaneous tissue over the quadriceps affects the assessment of mean power frequency at the fatigue threshold (MPFFT). It was hypothesized that greater skinfold values will result in lower power outputs associated to the MPFFT. Fourteen adults (Mean ± SD age = 20.7 ± 0.99; body weight = 72.8 ± 12.6 kg) performed an incremental cycle ergometry test to exhaustion while surface electromyographic (EMG) signals were measured from the vastus lateralis...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27766127/effects-of-static-stretching-on-squat-performance-in-division-i-female-athletes
#20
Clare F Heisey, J Derek Kingsley
Static stretching was once recognized as a method of preparation for physical activity that would inhibit performance and increase risk of injury. However, a growing body of research suggests that static stretching may not have an inhibitory effect. Regardless, the data have not examined gender differences or the fatigue index (FI) and flexibility effects of static stretching on the back squat over multiple sets. Therefore, the purpose of this study was to examine the relationship between a static-stretch condition (SC) and control condition (CC) on flexibility and the FI of Division I female athletes during 4 sets of the back squat...
2016: International Journal of Exercise Science
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