Current Search: Exercise--Physiological aspects. (x)
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- Title
- The effect of short term isokinetic training on limb velocity.
- Creator
- Brown, Lee Edward, Florida Atlantic University, Whitehurst, Michael, Maslin-Ostrowski, Patricia
- Abstract/Description
-
Strength increases following short-term bouts of isokinetic training have been demonstrated in the past without regard to limb velocity adaptations. This has been attributed to increased neuromotoric efficiency, rather than peripheral muscular hypertrophy. The purpose of this study was to determine the effects of a short-term isokinetic training regimen on limb velocity. Sixty subjects volunteered to participate and were randomly assigned to one of three groups; control (10 males, 10 females)...
Show moreStrength increases following short-term bouts of isokinetic training have been demonstrated in the past without regard to limb velocity adaptations. This has been attributed to increased neuromotoric efficiency, rather than peripheral muscular hypertrophy. The purpose of this study was to determine the effects of a short-term isokinetic training regimen on limb velocity. Sixty subjects volunteered to participate and were randomly assigned to one of three groups; control (10 males, 10 females), slow (10 males, 10 females) and fast (10 males, 10 females). Each group was pre-tested by performing five repetitions of concentric/concentric knee extension/flexion movements at 60 and 240 d/s on a Kin-Com isokinetic dynamometer. The slow (60 d/s) and fast (240 d/s) groups then completed two days of training (separated by 48--72 hours) consisting of three sets of eight repetitions while the control group did not train. All groups were post-tested at 7--9 days after the pre-test. Data were collected from the middle three repetitions at 1000 Hz and separated into three velocity ROM phases of acceleration (ACCROM), load range (LR) and deceleration (DCCROM) along with peak force. Four univariate (ACCROM, LR, DCCROM & Force) four-way (2 velocities x 2 genders x 2 times x 3 groups) mixed factorial ANOVA's were performed to analyze the data. Results demonstrated significant decreases in ACCROM and increases in LR between pre and post-tests for the slow group at the slow velocity (ACCROM-1.25 +/- .04 deg vs 1.08 +/- .03 deg; LR-74.80 +/- .11 deg vs 75.35 +/- .09 deg) and for the fast group at the fast velocity (ACCROM-14.24 +/- .33 deg vs 13.59 +/- .29 deg; LR-39.73 +/- .32 deg vs 40.59 +/- .25 deg). Force and DCCROM exhibited no significant differences between testing days for any group. These results collectively point to short-term isokinetic training resulting in velocity specific increased limb velocity. These acute improvements may be explained as the result of neural adaptations, such as increased motor unit recruitment or firing rate, rather than hypertrophic responses due to the relatively short duration of the training stimulus. Furthermore, these accelerative increases produce a more rapid rate of force development which may be important in activities necessitating explosive movement, including sporting events requiring power.
Show less - Date Issued
- 2000
- PURL
- http://purl.flvc.org/fcla/dt/12641
- Subject Headings
- Exercise--Physiological aspects, Isokinetic exercise
- Format
- Document (PDF)
- Title
- The effects of an external nasal dilator on the work of breathing during exercise.
- Creator
- James, Todd Robert., Florida Atlantic University, O'Kroy, Joseph A.
- Abstract/Description
-
Effects of an external nasal dilator on the work of breathing was measured during exercise in 14 untrained students (age, 24 $\pm$ 3 yr.). Two maximal, incremental ergometer tests were performed to exhaustion. Subjects wore a placebo or an active nasal dilator strip, in random order, during each test. Measurement of inspiratory elastic work (inew), inspiratory resistive work (inrw), and expiratory resistive work (exrw) was done using an esophageal balloon. Measured variables included VO$\sb2$...
Show moreEffects of an external nasal dilator on the work of breathing was measured during exercise in 14 untrained students (age, 24 $\pm$ 3 yr.). Two maximal, incremental ergometer tests were performed to exhaustion. Subjects wore a placebo or an active nasal dilator strip, in random order, during each test. Measurement of inspiratory elastic work (inew), inspiratory resistive work (inrw), and expiratory resistive work (exrw) was done using an esophageal balloon. Measured variables included VO$\sb2$, V$\rm\sb{E}$, V$\rm\sb{T}$, frequency of breathing (f), inew, inrw, and exrw, (work expressed in joules). There were no significant differences in VO$\sb2$, V$\rm\sb{E}$, V$\rm\sb{T}$ or f between groups ($\rm p>0.05$). No significant difference was found at peak exercise between groups (mean $\pm$ SD; Placebo; inew, $1.1\pm0.6$ J, inrw, $1.4\pm0.8$ J, exrw $2.2\pm1.8$ J; Active; inew, $1.0\pm0.5$ J, inrw, $1.3\pm0.7$ J, exrw, $1.8\pm0.9$ J; $\rm p>0.05$). Wearing an external nasal dilator does not significantly reduce the work of breathing during exercise.
Show less - Date Issued
- 1999
- PURL
- http://purl.flvc.org/fcla/dt/15691
- Subject Headings
- Respiration--Measurement, Exercise--Physiological aspects
- Format
- Document (PDF)
- Title
- The role of airflow limitation in exercise-induced arterial hypoxemia.
- Creator
- Miller, Joshua M., Florida Atlantic University, O'Kroy, Joseph A.
- Abstract/Description
-
The role of airflow limitation (AFL) in exercise-induced arterial hypoxemia (ElAH) was examined in six well-trained competitive cyclists. Two maximal cycle ergometer tests were performed, one while breathing room air (RA; 79% N2, 21% O2) and another breathing a mixture of heliox (He; 79% He, 21% O2) in random order. EIAH was estimated via pulse oximetry of HbSaO2. The results revealed no subject experienced AFL breathing RA or He. Despite a significant increase in V˙Emax (RA = 114.3 +/-...
Show moreThe role of airflow limitation (AFL) in exercise-induced arterial hypoxemia (ElAH) was examined in six well-trained competitive cyclists. Two maximal cycle ergometer tests were performed, one while breathing room air (RA; 79% N2, 21% O2) and another breathing a mixture of heliox (He; 79% He, 21% O2) in random order. EIAH was estimated via pulse oximetry of HbSaO2. The results revealed no subject experienced AFL breathing RA or He. Despite a significant increase in V˙Emax (RA = 114.3 +/- 27.6 l/min; He = 129.2 +/- 25.5 l/min; p < 0.05) during He condition there was no difference in HbSaO2 during maximal exercise (RA = 95.3 +/- 1%; He = 96.7 +/- 1.5%; p > 0.05). In conclusion, our subject population failed to show any significant decrease in HbSaO2 breathing RA, which makes it difficult to determine if AFL plays a role in EIAH.
Show less - Date Issued
- 2001
- PURL
- http://purl.flvc.org/fcla/dt/12736
- Subject Headings
- Exercise--Physiological aspects, Oxygen in the body
- Format
- Document (PDF)
- Title
- The Effects of an 8-Week Zumba® Program for Adults with Intellectual and Developmental Disabilities.
- Creator
- Joseph, Brianna M., Wilson, Cynthia L., Duffy, Mary Louise, Florida Atlantic University, College of Education, Department of Exceptional Student Education
- Abstract/Description
-
In this study, physiological and psychological outcomes of an 8-week moderate to vigorous aerobic exercise program (Zumba®) for adults with intellectual and developmental disabilities (IDD) were examined. Forty-six participants were randomly assigned to the experimental group (n = 24) or control group (n = 22). The experimental group participated in Zumba® for 8 weeks, 3 days per week, along with completing exercise rating scales and fitness tests. Outcome measures included agility, endurance...
Show moreIn this study, physiological and psychological outcomes of an 8-week moderate to vigorous aerobic exercise program (Zumba®) for adults with intellectual and developmental disabilities (IDD) were examined. Forty-six participants were randomly assigned to the experimental group (n = 24) or control group (n = 22). The experimental group participated in Zumba® for 8 weeks, 3 days per week, along with completing exercise rating scales and fitness tests. Outcome measures included agility, endurance, rate of perceived exertion (RPE), exercise motivation, and exercise self-efficacy. Agility, endurance, and RPE were measured by three fitness tests; Timed Up and Go (TUG) test, the Six-Minute Walk Test (6MWT), and Modified Borg Dyspnoea (MBD). Physiological outcomes were measured before the intervention (pretest), 4 weeks during the intervention, and after the intervention (posttest). The experimental group completed a follow-up of all three fitness tests 2 weeks after the removal of the intervention. A paired t test assessed the continuous measures within each group.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FA00013142
- Subject Headings
- People with mental disabilities, Developmentally disabled, Aerobic exercises--Physiological aspects, Aerobic exercises--Psychological aspects
- Format
- Document (PDF)
- Title
- International society of sports nutrition position stand: caffeine and performance.
- Creator
- Goldstein, Erica R., Ziegenfuss, Tim, Kalman, Douglas S., Kreider, Richard B., Campbell, Bill, Wilborn, Colin, Taylor, Lem, Willoughby, Darryn S., Stout, Jeffrey R., Graves, B. Sue, Wildman, Robert, Ivy, John L., Spano, Marie, Smith, Abbie E., Antonio, Jose
- Date Issued
- 2010-01-27
- PURL
- http://purl.flvc.org/fcla/dt/3327161
- Subject Headings
- Athletes --Nutrition, Athletic Performance, Athletic Performance --physiology, Daily Protein, Dietary Supplements, Exercise --Physiological Aspects, Exercise Physiology, Nutrition, Protein Intake Recommendations, Recommended Daily Allowances, Sports Nutrition
- Format
- Document (PDF)
- Title
- ISSN Exercise & Sport Nutrition Review: Research & Recommendations.
- Creator
- Kreider, Richard B., Almada, Anthony L., Antonio, Jose, Broeder, Craig, Earnest, Conrad, Greenwood, Mike, Incledon, Thomas, Kalman, Douglas S., Kleiner, Susan M., Leutholtz, Brian, Lowery, Lonnie M., Mendel, Ron, Stout, Jeffrey R., Willoughby, Darryn S., Ziegenfuss, Tim
- Date Issued
- 2004-05-15
- PURL
- http://purl.flvc.org/fcla/dt/3327171
- Subject Headings
- Sport Nutrition, Dietary Supplements, Ergogenic Aids, Weight Gain, Weight Loss, Athletes --Nutrition, Athletic Performance, Athletic Performance --Physiology, Athletic Training --Standards, Exercise --Physiological Aspects, Exercise Physiology
- Format
- Document (PDF)
- Title
- Acute and temporal responses of brain–derived neurotrophic factor and Interleukin-6 to high and low repetition resistance training programs.
- Creator
- Quiles, Justin M., Zourdos, Michael C., Florida Atlantic University, College of Education, Department of Exercise Science and Health Promotion
- Abstract/Description
-
The purpose of this study was to determine if resistance exercise altered peripheral BDNF concentration. Eighteen trained male subjects were split into two groups performing varied repetition ranges. DUP-HR and DUP-LR groups trained 3x/week for 8 weeks, and were equated for total volume (repetitions X sets X intensity). Plasma BDNF and interleukin-6 (IL-6) levels were measured prior to and immediately following the first exercise session of weeks 1, 2, 4 and 6. Pre-exercise levels were also...
Show moreThe purpose of this study was to determine if resistance exercise altered peripheral BDNF concentration. Eighteen trained male subjects were split into two groups performing varied repetition ranges. DUP-HR and DUP-LR groups trained 3x/week for 8 weeks, and were equated for total volume (repetitions X sets X intensity). Plasma BDNF and interleukin-6 (IL-6) levels were measured prior to and immediately following the first exercise session of weeks 1, 2, 4 and 6. Pre-exercise levels were also assessed prior to the second and third sessions of week 1 and 6. Lastly, resting levels were measured before and after training intervention. No group differences (p>0.05) were detected for either biomarker. An acute BDNF elevation (p=0.018) was detected only in the final week of training. IL-6 elevations were detected at all acute measurements (p<0.01). BDNF and IL-6 percentage change correlated significantly (p<0.05) in week-1. No chronic alterations were observed (p>0.05).
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00004461, http://purl.flvc.org/fau/fd/FA00004461
- Subject Headings
- Bioenergetics, Cognitive science, Exercise -- Physiological aspects, Kinesiology, Metabolic syndrome -- Pathophysiology, Neurons -- Physiology, Neurophysiology, Neurotrophic functions
- Format
- Document (PDF)
- Title
- The Effect of Maximal Aerobic Exercise on Plasma BDNF and BDNF Expression in PBMCs in Obese and Non-Obese Individuals.
- Creator
- Maharaj, Arun, Whitehurst, Michael, Florida Atlantic University, College of Education, Department of Exercise Science and Health Promotion
- Abstract/Description
-
The purpose of this study was to determine if maximal aerobic exercise promotes BDNF expression in obese individuals. Plasma levels and the expression of BDNF in PBMCs were examined. 22 participants (10 obese, 12 non-obese) completed a V02max treadmill test and blood was obtained pre, post, and 1 and 2 hours into exercise recovery. Plasma and PBMCs were isolated and analyzed for BDNF via ELISA and Western blot techniques. A significant effect for time was observed for plasma BDNF (P=
Show moreThe purpose of this study was to determine if maximal aerobic exercise promotes BDNF expression in obese individuals. Plasma levels and the expression of BDNF in PBMCs were examined. 22 participants (10 obese, 12 non-obese) completed a V02max treadmill test and blood was obtained pre, post, and 1 and 2 hours into exercise recovery. Plasma and PBMCs were isolated and analyzed for BDNF via ELISA and Western blot techniques. A significant effect for time was observed for plasma BDNF (P= <0.00 1 ). Additionally, A significant group-by-time interaction was found from pre-to-RIH for BDNF expression in PBMCs (P= 0.046). Further, significant correlations were found between BMI and waist circumference (r= .91, P< 0.001), WHR (r= .51, P= 0.002) and Pre-to-RlH ratio (r=0.58, P=0.008). Young obese subject's BDNF response to maximal exercise was consistent with previous studies. Post-exercise BDNF expressed in PBMCs were significantly higher than rest suggesting immunological-neuroprotective interactions in the CNS.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004664, http://purl.flvc.org/fau/fd/FA00004664
- Subject Headings
- Biochemical markers, Blood lipoproteins, Blood plasma -- Physiology, Exercise -- Physiological aspects, Obesity -- Exercise therapy
- Format
- Document (PDF)
- Title
- Oxygenated water and exercise performance.
- Creator
- Mielke, Michelle., Florida Atlantic University, O'Kroy, Joseph A.
- Abstract/Description
-
The purpose of this study was to determine the effect of oxygenated water on endurance exercise performance. Subjects (N=15, VO2max 54.8 +/- 5.8 ml/kg/min) were tested using non-oxygenated water (PL) and oxygenated water (OW). Two maximal exercise tests and 2 submaximal tests were conducted. VO2max (3.28 +/- 0.81 L/min (OW) vs. 3.30 +/- 0.80 L/min (PL)) VE, VO2, or R were not different. Submaximal blood lactate values at 60%, 80% of VO 2max (4.2 +/- 2.1 mMol/L, 6.6 +/- 2.9 mMol/L (OW) vs. 3.8...
Show moreThe purpose of this study was to determine the effect of oxygenated water on endurance exercise performance. Subjects (N=15, VO2max 54.8 +/- 5.8 ml/kg/min) were tested using non-oxygenated water (PL) and oxygenated water (OW). Two maximal exercise tests and 2 submaximal tests were conducted. VO2max (3.28 +/- 0.81 L/min (OW) vs. 3.30 +/- 0.80 L/min (PL)) VE, VO2, or R were not different. Submaximal blood lactate values at 60%, 80% of VO 2max (4.2 +/- 2.1 mMol/L, 6.6 +/- 2.9 mMol/L (OW) vs. 3.8 +/- 1.8 mMol/L, 6.1 +/- 2.4 mMol/L (PL)) and HR (140 +/- 15 bpm, 162 +/- 11 bpm (OW) vs. 138 +/- 15 bpm, 163 +/- 13 bpm (PL)) were not different and neither was time to exhaustion at 90% of VO 2max (5.22 +/- 2.31 min (OW) vs. 6.80 +/- 2.93 min (PL)). Oxygen content of OW (13.1 +/- 1.5 mgO2L-1 ) was higher than PL (6.0 +/- 0.1 mgO2L -1) (p<0.05) but lower than manufacture's claims. Thus, superoxygenated water did not result in any improvements in endurance exercise performance.
Show less - Date Issued
- 2004
- PURL
- http://purl.flvc.org/fcla/dt/13178
- Subject Headings
- Oxygen--Physiological transport, Oxygen in the body, Exercise--Physiological aspects
- Format
- Document (PDF)
- Title
- Allometric scaling models of isometric biceps strength and the effects of resistance training.
- Creator
- Ryan, Eric Dobert., Florida Atlantic University, Zoeller, Robert F.
- Abstract/Description
-
The purpose of this study was to (1) derive gender-specific allometric scaling models using pre-training muscle cross-sectional area (CSA) and body mass (BM) as scaling variables, (2) test model appropriateness using regression diagnostics, and (3) cross-validate the models before and after training. A subset of FAMuSS study data (n = 319, females = 183, males = 136) was randomly split into two groups (A & B). Group A pre-training data for female BM, female CSA, male BM, and male CSA models...
Show moreThe purpose of this study was to (1) derive gender-specific allometric scaling models using pre-training muscle cross-sectional area (CSA) and body mass (BM) as scaling variables, (2) test model appropriateness using regression diagnostics, and (3) cross-validate the models before and after training. A subset of FAMuSS study data (n = 319, females = 183, males = 136) was randomly split into two groups (A & B). Group A pre-training data for female BM, female CSA, male BM, and male CSA models produced scaling exponents of 1.08, 0.44, 0.63, and 0.68, respectively. The female BM model was deemed inappropriate due to non-normal distribution of residuals. All other models met statistical criteria including normal distribution of residuals. Cross-validation to Group B pre-training data revealed that the models were appropriate, with the possible exception of male CSA model. Twelve weeks of resistance training did not alter the relation between BM, CSA, and muscular strength assessed by allometric scaling.
Show less - Date Issued
- 2005
- PURL
- http://purl.flvc.org/fcla/dt/13251
- Subject Headings
- Body composition--Measurement, Exercise--Physiological aspects, Physical fitness--Nutritional aspects, Sports--Physiological aspects, Weight training
- Format
- Document (PDF)
- Title
- Circulating Cell-free DNA and Interleukin-6 Expression Following Acute High-Intensity Interval Exercise in Obesity.
- Creator
- Ferrandi, Peter J., Huang, Chun-Jung, Florida Atlantic University, College of Education, Department of Exercise Science and Health Promotion
- Abstract/Description
-
The primary purpose of this study was to examine the impact of acute highintensity interval Exercise (HIIE) on plasma cfDNA and IL-6 responses in obese and normal-weight subjects. Fifteen subjects (8 obese and 7 normal-weight) were recruited to participate in an acute HIIE protocol. Our results demonstrated a significant elevation across time in plasma cfDNA and IL-6 immediately following acute HIIE, with no difference between obese and normal-weight subjects. Furthermore, cfDNA was not...
Show moreThe primary purpose of this study was to examine the impact of acute highintensity interval Exercise (HIIE) on plasma cfDNA and IL-6 responses in obese and normal-weight subjects. Fifteen subjects (8 obese and 7 normal-weight) were recruited to participate in an acute HIIE protocol. Our results demonstrated a significant elevation across time in plasma cfDNA and IL-6 immediately following acute HIIE, with no difference between obese and normal-weight subjects. Furthermore, cfDNA was not correlated with IL-6 in response to acute HIIE in either group. These findings indicate that the obese state does not further exacerbate the release of acute HIIE-induced inflammatory mediators (cfDNA and IL-6), which suggests that HIIE training may serve as a time-effective exercise strategy to improve obesity-associated inflammation.
Show less - Date Issued
- 2017
- PURL
- http://purl.flvc.org/fau/fd/FA00004929, http://purl.flvc.org/fau/fd/FA00004929
- Subject Headings
- Interval training--Physiological aspects., Exercise--Physiological aspects., Physical education and training--Measurement., Gene expression., Cellular control mechanisms.
- Format
- Document (PDF)
- Title
- The influence of time-equated training programs on muscle hypertrophy, strength, and body composition.
- Creator
- Dolan, Chad, Zourdos, Michael C., Florida Atlantic University, College of Education, Department of Exercise Science and Health Promotion
- Abstract/Description
-
The purpose of this study was to determine if barbell circuit training (RTC) as a model for concurrent training is superior to high intensity interval (CTHI) or moderate intensity continuous (CTMI) cycling for changes in muscular strength, hypertrophy, and body composition. Eleven trained males were recruited and counterbalanced into three groups. Each program featured three alternating days of resistance training per week, with one of the above time-equated (30-minute) concurrent training...
Show moreThe purpose of this study was to determine if barbell circuit training (RTC) as a model for concurrent training is superior to high intensity interval (CTHI) or moderate intensity continuous (CTMI) cycling for changes in muscular strength, hypertrophy, and body composition. Eleven trained males were recruited and counterbalanced into three groups. Each program featured three alternating days of resistance training per week, with one of the above time-equated (30-minute) concurrent training modalities between sessions. All groups increased muscular strength (p<0.05, RTC=7.48%, CTHI=10.32%, CTMI=15.74%) with no group differences (p>0.05). Increases in upper body muscle hypertrophy were similar in RTC and CTMI (p<0.01, RTC=20.18%, CTMI=20.97%), increases in lower body muscle hypertrophy only occurred in CTMI (VM: p=0.01, 38.59%, VLP: p=0.07, 13.33%), while no hypertrophy changes were detected in CTHI (p>0.05), no group experienced changes in body composition (p>0.05). These findings suggest similar muscle performance benefits from barbell circuit or cycling concurrent training.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00004440, http://purl.flvc.org/fau/fd/FA00004440
- Subject Headings
- Exercise -- Physiological aspects, Kinesiology, Muscle strength, Personal trainers, Physical education and training, Physical fitness -- Nutritional aspects
- Format
- Document (PDF)
- Title
- Relationship Between Anthropometric Measurements and Average Concentric Velocity In The Back Squat.
- Creator
- Cooke, Daniel M., Zourdos, Michael C., Florida Atlantic University, College of Education, Department of Exercise Science and Health Promotion
- Abstract/Description
-
The purpose of the present study was to investigate if any relationship exists between anthropometric measurements with average concentric velocity (ACV) at various intensities in the back squat and the number of repetitions able to be performed during a set to volitional fatigue at 70% of one-repetition maximum (1RM). It was hypothesised that short femurs and total height would be related to slower ACVs and lower total number of repetitions performed. 58 resistance trained subjects were...
Show moreThe purpose of the present study was to investigate if any relationship exists between anthropometric measurements with average concentric velocity (ACV) at various intensities in the back squat and the number of repetitions able to be performed during a set to volitional fatigue at 70% of one-repetition maximum (1RM). It was hypothesised that short femurs and total height would be related to slower ACVs and lower total number of repetitions performed. 58 resistance trained subjects were recruited and attended one day of data collection. Subjects performed 1RM testing of the back squat followed by two single repetition sets at 30-90% of 1RM and a 70% of 1RM set to fatigue. There was no significant correlation between femur length and height with ACV at any intensity (p>0.05). A significant negative correlation existed between both height (r=-0.39, p=0.003) and femur length (r=-0.31, p=0.018) with total number of repetitions performed.
Show less - Date Issued
- 2017
- PURL
- http://purl.flvc.org/fau/fd/FA00004946, http://purl.flvc.org/fau/fd/FA00004946
- Subject Headings
- Sports--Physiological aspects., Exercise--Physiological aspects., Body composition--Measurement., Human mechanics., Muscle strength--Measurement.
- Format
- Document (PDF)
- Title
- The Comparison of High-Intensity Interval Exercise vs. Continuous Moderate Exercise on C1q/TNF-Related Protein-9 Expression and Flow-Mediated Vasodilation.
- Creator
- Fico, Brandon G., Huang, Chun-Jung, Florida Atlantic University, College of Education, Department of Exercise Science and Health Promotion
- Abstract/Description
-
The primary purpose of this study was to investigate the effect of acute high-intensity interval exercise (HIIE) vs. continuous moderate-intensity exercise (CME) on serum CTRP9 and brachial FMD responses in obese and normal-weight subjects. Sixteen participants (9 obese and 7 normal-weight) completed HIIE and CME in a randomized fashion. Our results showed a significant time effect for CTRP9 immediately following acute HIIE and CME in both groups. Furthermore, both significant treatment by...
Show moreThe primary purpose of this study was to investigate the effect of acute high-intensity interval exercise (HIIE) vs. continuous moderate-intensity exercise (CME) on serum CTRP9 and brachial FMD responses in obese and normal-weight subjects. Sixteen participants (9 obese and 7 normal-weight) completed HIIE and CME in a randomized fashion. Our results showed a significant time effect for CTRP9 immediately following acute HIIE and CME in both groups. Furthermore, both significant treatment by time and group by time interactions for FMD were observed following both exercise protocols, with greater CME-induced FMD response in obese subjects than normal-weight subjects. Additionally, a positive correlation in percent change (baseline to peak) between CTRP9 and FMD was observed following acute CME. These findings support acute CME for improvement of endothelial function in obesity. Furthermore, the novel results from this study provide a foundation for additional examination of the mechanisms of exercise-mediated CTRP9 on endothelial function.
Show less - Date Issued
- 2017
- PURL
- http://purl.flvc.org/fau/fd/FA00004915, http://purl.flvc.org/fau/fd/FA00004915
- Subject Headings
- Cardiovascular system--Physiology., Biological transport., Exercise--Physiological aspects., Interval training--Physiological aspects., Bioinformatics., Exercise--Health aspects., Lifestyles--Health aspects., Gene expression.
- Format
- Document (PDF)