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2019

Kinesiology

Metabolism and Nutrition

Articles 1 - 11 of 11

Full-Text Articles in Life Sciences

Dim Light Exposure Or Melatonin Ingestion Lowers A Type 2 Diabetic's Blood Glucose Removal Rate: A Single Case, Matthew C. Scott, Arnold G. Nelson, Christopher M. Hearon Oct 2019

Dim Light Exposure Or Melatonin Ingestion Lowers A Type 2 Diabetic's Blood Glucose Removal Rate: A Single Case, Matthew C. Scott, Arnold G. Nelson, Christopher M. Hearon

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 1161-1168, 2019. The purpose of this case study isto compare a Type 2 diabetic's postprandial glucoregulatory ability under two different room lighting conditions. The subject was a 56-year-old physically active male with well controlled blood glucose levels (HbA1c ≤ 6% for 5 y) from a combination of diet, exercise, and medication. Two hours post evening meal (380 kcal, 18 g fat, 44 g carbohydrate, 12 g protein), a 45 g carbohydrate challenge was given, and blood glucose was measured every 30 minutes for 2.5 hours under three conditions: dim light (<50 lux) (DL), bright light (>40000 ...


Acute Effects Of A Multi-Ingredient Pre-Workout Supplement On 5-Km Running Performance In Recreationally-Trained Athletes, Daniel J. Lutsch, Clayton L. Camic, Andrew R. Jagim, Nora J. Johnston, Taylor L. Musgjerd Aug 2019

Acute Effects Of A Multi-Ingredient Pre-Workout Supplement On 5-Km Running Performance In Recreationally-Trained Athletes, Daniel J. Lutsch, Clayton L. Camic, Andrew R. Jagim, Nora J. Johnston, Taylor L. Musgjerd

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 1045-1056, 2019. The purpose of the present study was to examine the effects of an acute dose of a multi-ingredient pre-workout supplement on 5-km running performance and subjective measures of fatigue. Twenty aerobically-trained, males (n= 10, mean ± SD = 80.8 ± 6.1 kg) and females (n= 10, 64.5 ± 6.6 kg) completed two 5-km running races for time in a double-blind, cross-over fashion. During the first session, subjects were randomly assigned to ingest the supplement or placebo 30 minutes prior to running a 5-km race. The supplement contained multiple ingredients including caffeine ...


Effects Of A 3-Week High-Fat-Low-Carbohydrate Diet On Lipid And Glucose Profiles In 8 Experienced, Middle-Age Male Runners, Eric K. O'Neal, Ashton F. Smith, Alexander J. Heatherly, Lauren G. Killen, Hunter S. Waldman, Angela Hollingsworth, Yunsuk Koh Apr 2019

Effects Of A 3-Week High-Fat-Low-Carbohydrate Diet On Lipid And Glucose Profiles In 8 Experienced, Middle-Age Male Runners, Eric K. O'Neal, Ashton F. Smith, Alexander J. Heatherly, Lauren G. Killen, Hunter S. Waldman, Angela Hollingsworth, Yunsuk Koh

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 786-799, 2019. This study examined glucose and lipid marker responses following a 3-week, ad libitum low-carbohydrate-high-fat diet (LCHF; ~70% kcals from fat, <50 g/day of net carbohydrates) versus the habitual mixed macronutrient diet (HMD) of eight middle-age, trained male runners (40 ±10 years; V̇O2peak = 49 ±4 mL·kg-1·min-1). Blood was drawn at 0600 from an antecubital vein after an overnight fast under conditions of no exercise/ heat stress (NEXH; 48 h of restriction from intense exercise) or 24-h after exercise/heat stress (EXH; 60 min run in hot conditions plus 5-km time trial) for both dietary conditions. Glucose improvement during LCHF approached but did not reach statistical significance (p = 0 ...


Endothelial, Cardiovascular, And Performance Responses To L-Arginine Intake And Resistance Exercise, Daniel M. Streeter, Kara A. Trautman, Tylor W. Bennett, Lauren E. Mcintosh, James W. Grier, Sherri N. Stastny, Kyle J. Hackney Apr 2019

Endothelial, Cardiovascular, And Performance Responses To L-Arginine Intake And Resistance Exercise, Daniel M. Streeter, Kara A. Trautman, Tylor W. Bennett, Lauren E. Mcintosh, James W. Grier, Sherri N. Stastny, Kyle J. Hackney

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 701-713, 2019. The purpose of this study was to examine the acute endothelial, cardiovascular, and performance responses to L-arginine intake by assessing flow-mediated dilation (FMD) and various indicators (e.g., heart rate, heart rate variability (HRV), blood pressure, torque) both before and after resistance exercise. Thirty (15 male, 15 female) physically active participants (mean ± SD: age 20.4 ± 1.8 years, height 176.9 ± 10.2 cm, body mass 76.0 ± 12.2 kg) volunteered for a randomized, cross-over, double-blind, placebo-controlled clinical trial. Participants completed five sets of elbow extension-flexion exercise after consumption ...


Similar Effects Of 24 Weeks Of Resistance Training Performed With Different Frequencies On Muscle Strength, Muscle Mass, And Muscle Quality In Older Women, Fábio Luiz Cheche Pina, João Pedro Nunes, Matheus Amarante Nascimento, Alex Silva Ribeiro, Jerry L. Mayhew, Edilson Serpeloni Cyrino Mar 2019

Similar Effects Of 24 Weeks Of Resistance Training Performed With Different Frequencies On Muscle Strength, Muscle Mass, And Muscle Quality In Older Women, Fábio Luiz Cheche Pina, João Pedro Nunes, Matheus Amarante Nascimento, Alex Silva Ribeiro, Jerry L. Mayhew, Edilson Serpeloni Cyrino

International Journal of Exercise Science

International Journal of Exercise Science 12(6): 623-635, 2019. The purpose of this study was to analyze the effects of 24 weeks of resistance training (RT) performed 2 vs. 3 times per week on muscle strength, muscle mass, and muscle quality in older women. Thirty-nine older women (≥ 60 years old) were randomly assigned to two groups according to RT frequency (G2x = two sessions per week, n=19; and G3x = three sessions per week, n=20) and were submitted to 24 weeks of whole-body RT, divided into two stages of 12 weeks. In the first stage, participants performed 1 set of ...


Effect Of Fed State On Self-Selected Intensity And Affective Responses To Exercise Following Public Health Recommendations, Ryan Rhodewalt, Katelyn Largent, Blaque Saur, Todd Astorino Ph.D, Zachary Zenko, Matt Schubert Mar 2019

Effect Of Fed State On Self-Selected Intensity And Affective Responses To Exercise Following Public Health Recommendations, Ryan Rhodewalt, Katelyn Largent, Blaque Saur, Todd Astorino Ph.D, Zachary Zenko, Matt Schubert

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 602-613, 2019. Nutritional status has numerous effects on exercise metabolism and psychological responses. The effect of fed state on changes in affective valence; however, are unknown. Thus, the present study examined how fed state influenced self-selected exercise intensity, affective responses during exercise, and exercise enjoyment when exercise was completed following physical activity guidelines for public health. In a repeated-measures crossover design, 25 recreationally active men and women (age and BMI = 22.0 ± 2.0 yr and 24.3 ± 3.3 kg/m2) performed a single 30 min session of treadmill exercise at ...


Acute Effects Of L-Arginine Supplementation On Oxygen Consumption Kinetics And Muscle Oxyhemoglobin And Deoxyhemoglobin During Treadmill Running In Male Adults, Claudia M. Meirelles, Cristiane Matsuura, Roberto Silva Jr., Felipe F. Guimaraes, Paulo Sergio C. Gomes Feb 2019

Acute Effects Of L-Arginine Supplementation On Oxygen Consumption Kinetics And Muscle Oxyhemoglobin And Deoxyhemoglobin During Treadmill Running In Male Adults, Claudia M. Meirelles, Cristiane Matsuura, Roberto Silva Jr., Felipe F. Guimaraes, Paulo Sergio C. Gomes

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 444-455, 2019. L-arginine is used as a nitric oxide related supplement intended to improve sports performance, and to enhance muscular recovery during exercise. However, the literature is inconclusive. The aim of this study was to determine the effects of acute oral L-arginine supplementation on O2 consumption kinetics and local muscle blood volume and oxygenation during treadmill running at two different intensities. Using a double-blind, crossover and placebo-controlled design, 11 young healthy male adults were randomly assigned to 6 g of L-arginine (ARG) or placebo (PLA) supplementation that was ingested 60 min before the ...


The Effects Of Pre-Workout Supplementation On Anaerobic Power And Maintenance Of Power In College Students, Christine T. Herbe, M. Travis Byrd, Taylor K. Dinyer, Brian J. Wallace, Haley C. Bergstrom Feb 2019

The Effects Of Pre-Workout Supplementation On Anaerobic Power And Maintenance Of Power In College Students, Christine T. Herbe, M. Travis Byrd, Taylor K. Dinyer, Brian J. Wallace, Haley C. Bergstrom

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 355-365, 2019. This study examined the effects of Assault™ pre-workout supplementation on peak power output (PP), mean power output (MP), and percent decline in power output (% decline) during repeated, Wingate anaerobic tests. Thirteen healthy, physically active participants (7 male, 6 female) completed the randomized, double-blind, placebo-controlled crossover design with two conditions, supplement and placebo. The participants visited the laboratory for a total of three visits, 2-7 days apart. During visit 1, the participants completed a 4-minute familiarization warm-up on the Monark cycle ergometer and performed one baseline, 30-second Wingate cycle ergometry test. During ...


Concordance Among Bioelectrical Impedance Analysis Measures Of Percent Body Fat In Athletic Young Adults, Benjamin M. Carrion, Ashley Wells, Jerry L. Mayhew, Alexander J. Koch Jan 2019

Concordance Among Bioelectrical Impedance Analysis Measures Of Percent Body Fat In Athletic Young Adults, Benjamin M. Carrion, Ashley Wells, Jerry L. Mayhew, Alexander J. Koch

International Journal of Exercise Science

International Journal of Exercise Science 12(4): 324-331, 2019. The purpose of this investigation was to determine the agreement among three bioelectrical impedance analysis devices (BIA) in athletic young adults. Fifty-one participants (26 men and 25 women) were assessed for percent body fat (PBF) using an arm-to-arm bipolar single-frequency device (ABIA), a leg-to-leg single-frequency device (LBIA), and an octopolar multi-frequency BIA device (MFBIA). PBF was measured with the three devices in a randomized, counterbalanced order. Repeated measures ANOVA revealed significant (p < 0.001) differences in PBF estimates among all devices (ABIA = 19.1 ± 7.2%, LBIA = 21.6 ±7.5%, and MFBIA = 22.9 ± 8.8%). Pearson’s Correlations revealed a strong relationship between ABIA and MFBIA in both men (r = 0.948) and women (r = 0.947) and a moderately-strong relationship between LBIA and MFBIA (r = 0.870 ...


Antioxidant Supplementation Impairs Changes In Body Composition Induced By Strength Training In Young Women, Maurilio T. Dutra, Savio Alex, Alyson F. Silva, Lee E. Brown, Martim Bottaro Jan 2019

Antioxidant Supplementation Impairs Changes In Body Composition Induced By Strength Training In Young Women, Maurilio T. Dutra, Savio Alex, Alyson F. Silva, Lee E. Brown, Martim Bottaro

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 287-296, 2019. Strength training (ST) is known to promote muscle hypertrophy and body composition adaptations. However, only a few studies investigated the effects of ST combined with antioxidant supplementation (AS) on these adaptations. The aim of this study was to investigate chronic effects of ST combined with AS on fat mass (FM) and fat-free mass (FFM) of young women. In a double-blinded design, thirty-three subjects (22.9 ± 2.5 years, 57.7 ± 8.4 kg, 1.6 ± 0.6 m) were allocated into three groups: 1) vitamins (n=12), 2) placebo (n=11 ...


Supplementation With A Multi-Ingredient Pre-Workout Supplement Does Not Augment Resistance Training Adaptations In Females, Anna Nelson, Clayton L. Camic, Carl Foster, Brooke Zajac, Kaela Hoecherl, Jacob Erickson, Andrew Jagim Jan 2019

Supplementation With A Multi-Ingredient Pre-Workout Supplement Does Not Augment Resistance Training Adaptations In Females, Anna Nelson, Clayton L. Camic, Carl Foster, Brooke Zajac, Kaela Hoecherl, Jacob Erickson, Andrew Jagim

International Journal of Exercise Science

International Journal of Exercise Science 12(2): 187-202, 2019. Multiple ingredient pre-workout supplements (MIPS) are purported to offer favorable acute metabolic changes potentially leading to improvements in body composition and training adaptations over time. However, there is limited information available regarding the long-term benefits and safety of consuming MIPS, specifically in female populations. Therefore, the purpose of this study was to investigate the effects of pre-workout ingestion on body composition, training adaptations and select markers of clinical health in recreationally active females after 7 weeks of supplementation and resistance training. Nineteen participants participated in a randomized, double-blind, placebo controlled study ...