Download or read book Comparing Aerobic Adaptations with a Running Based High Intensity Interval Training HIIT and a Continuous Endurance Training CET Protocol in Relatively Healthy Adults written by Efrain James Sanchez and published by . This book was released on 2013 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The purpose of this study was to compare a running based High Intensity Interval Training (HIIT) protocol to a Continuous Endurance Training (CET) and their aerobic adaptations, such as increased VO2[subscritp max] and improved body composition. Recruitment of participant's occured by flyers on campus. After indicating interest, volunteers answered no, to all questions on the PAR-Q to be eligible. Pre and post testing included a submaximal VO2[subscritp max] test, using the 12 min cooper run test, and body composition using the BOD POD GS (COSMED USA Inc., Concord, California). After testing, the participants were randomly stratified based on matched aerobic capacity scores to either the HIIT, CET or control group. The CET and HIlT group completed 6 weeks of 3 days/week of the training protocol. The HIlT group did 10 X 60 s workload intervals with 60 s of rest in between each interval. The CET group did 40 to 60 min moderate intensity running. Pre to post test values were compared using a student t test with p

Download or read book Flex Life for Women written by Spencer Langley and published by Flex Life Inc.. This book was released on 2019-01-23 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Are you tired of fad diets? You’re not alone. Let’s be honest, temporary diets lead to temporary results. In this book, you’ll discover how to achieve lasting weight loss. This complete guide teaches everything you need to know to get lean and toned, including: · How hormones influence female fat loss · An easy and proven way to build good habits and break bad habits · Everything you’ve always wanted to know about healthy eating, macros, and intermittent fasting · The simple principles of weight lifting to get lean and toned · The best glute exercises to build a bigger butt · Fast and effective fat burning workouts—including high intensity interval training (HIIT) · How to drink alcohol without sabotaging your goals · The dirty secrets supplement companies don’t want you to know · A foolproof guide to staying in shape while traveling Best of all, this is a book that you can trust because it’s backed by over 1,000 scientific studies. There are no gimmicks or tricks; you’ll strictly get what works and nothing that doesn’t. FREE Bonus Purchase this book, and you’ll get access to my personal email address. Have a question or need some advice? Just shoot me an email, and I’d be happy to help. Buy this book today, and you’ll be on the fast track to the body of your dreams.

Download or read book High Intensity Versus Endurance Training written by Tina Leanne Siemens and published by . This book was released on 2013 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: In light of the current global prevalence of overweight and obesity, the associated health risks, and the continuing adoption of sedentary lifestyle, this thesis investigated some of the factors that contribute to exercise adherence, directly comparing high-intensity whole body interval training and continuous endurance training. 68 inactive university aged adults (Age: 21.4±3.4 yrs, BMI: 25.6±4.6 kg/m2, VO2peak 40.1±5.7 ml/kg/min) were randomized into one of three groups; a non-exercise control, whole body high intensity training, or continuous endurance training. Aerobic capacity measurements, time to completion trials, muscular endurance, and core strength measures were taken at pre, post and follow up testing sessions. Psychological questionnaires were also administered during exercise as well as throughout the study. Following the intervention both exercise groups demonstrated equivalent improvements in aerobic performance, with only the interval group experiencing improved muscular and core endurance. After the 2-month follow up testing sessions the interval group lost all aerobic and core adaptation, with endurance only experiencing a partial loss. This finding indicates that the interval group did not adhere to exercise at a level that was high enough to preserve the adaptations associated with training. This finding is further supported by the psychological factors measured throughout this study, including acute affect, enjoyment and intentions to engage in future exercise.

Download or read book Training Intensity Volume and Recovery Distribution Among Elite and Recreational Endurance Athletes written by Thomas L. Stöggl and published by Frontiers Media SA. This book was released on 2019-09-20 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Interval Intensity on Time to Exhaustion During High Intensity Interval Training HIIT Running in Recreational Male Runners written by Andrew M. Hahn and published by . This book was released on 2019 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Intensity Interval Training (HIIT) has become extremely popular in recent years, however, current HIIT prescriptions lack guidelines regarding interval intensities and associated margins. The purpose of this study is to investigate Run Time to Exhaustion (Te) and provide insight regarding HIIT intensities for future aerobic exercise programming. Ten healthy adult male recreational runners (Age=22.9 ± 2.5 yr., Ht=1.72 ± 0.1m, BM=74.1 ± 7.4 kg) measured maximal oxygen consumption (VO2max) (52.4 ± 6.1ml/kg/min) with a graded exercise test (GXT). Running speed was determined using ACSM running equation for exercise metabolism. Protocols 1-3 were HIIT running sessions, and Protocol 4 was a continuous running trial, all of the same average intensity (80% VO2max). All HIIT trials implemented aerobic style bout durations of 2 minutes each, with a 1:1 work to active rest/recovery ratio. A repeated measures ANOVA determined that mean Te differed statistically between the 4 protocols. Protocol 1 elicited a significant reduction in mean Te when compared to all other conditions. Based on the findings of this study, recreational runners can monitor variables and/or prescribe intensities to maximize economy and efficacy of aerobic HIIT program implementation.

Download or read book The Effect of Blood Flow Restriction Techniques During Aerobic Exercise in Healthy Adults written by Trent E. Cayot and published by . This book was released on 2015 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the importance of aerobic exercise in disease prevention and maintenance of a healthy lifestyle has been extensively demonstrated [1-4], it was recently reported by the American Heart Association (AHA) that approximately 30% of the adult population within the United States does not engage in regular aerobic exercise [2]. The most commonly reported reason why adults did not engage in regular exercise was due to a "lack of time" within their daily routine [5, 6]. In order to best integrate exercise into a time constrained schedule many have turned to high-intensity interval training (HIIT) due to the advantageous training outcomes reported in a relatively short duration (2-4 week) [7, 8]. In addition, the exercise volume is significantly reduced (~80-90%) during HIIT sessions compared to traditional "continuous" cardiovascular exercise sessions [8, 9] thus decreasing the time spent exercising [8]. However, the exercise intensities used during HIIT sessions ("all-out effort" [9, 10] or near maximal intensities [11, 12]) may become a deterrent or may not be appropriate for certain populations. An exercise technique known as blood flow restriction (BFR) exercise may be an acceptable alternative approach for these populations as it utilizes low exercise intensities. BFR exercise has been shown to concurrently increase muscle hypertrophy [13, 14], muscle strength [13] and peak oxygen uptake (VO2pk) [14, 15] subsequent to low-intensity (i.e., walking, cycling) cardiovascular training programs. The combination of BFR (i.e., decreased exercise intensity) and interval training (i.e., decreased exercise volume) is both intriguing and a unique alternative solution that could potentially be applicable to a variety of populations. This alternative exercise approach (i.e., BFR interval training) addresses many commonly cited barriers for exercise retention (i.e., time constrained schedules, high exercise intensities). Therefore, the primary purpose of this dissertation was to determine the results of a short duration (2 weeks) BFR low-intensity interval training (BFR-LIIT) program on aerobic capacity and skeletal muscle strength (chapter 5). However, before the primary purpose could be investigated many secondary aims needed to be examined, including i) determining the effect of occlusion duration on the microvascular oxygenation and neuromuscular activation during exercise (chapter 3) and ii) determining the acute physiological responses (oxygen uptake, microvascular oxygenation, neuromuscular activation) to BFR used in cardiovascular exercise models (constant load, chapter 4; interval, chapter 5). The effects of occlusion duration were examined as healthy subjects performed isometric knee extension contractions at different sub-maximal intensities under control (CON, no occlusion), immediate occlusion (IO) and pre occlusion (PO) conditions. During the IO condition the occlusion pressure (130% of the resting systolic blood pressure, 130% SBP) was applied immediately prior to exercise while the occlusion pressure (130% SBP) was applied five minutes prior to exercise in the PO condition. Varying the occlusion duration did not affect the neuromuscular activation of the exercising musculature (p > 0.05), although activation did significantly increase with increasing sub-maximal exercise intensities. However, PO elicited greater microvascular deoxygenation (deoxy-[Hb+Mb]), as assessed by near-infrared spectroscopy) compared to CON at all exercise intensities (p 0.05), whereas the deoxy-[Hb+Mb] was only greater during PO compared to IO at the lowest exercise intensity tested (20% maximal voluntary contraction, MVC). Furthermore, IO resulted in greater deoxy-[Hb+Mb] compared to CON only at low exercise intensities (20% MVC, 40% MVC). In conclusion, although occlusion duration did significantly affect neuromuscular activation, BFR techniques influenced microvascular oxygenation the most during low-intensity exercise. Many investigations have observed an increased neuromuscular activation with BFR resistance exercise [16-19], however, the peripheral responses (i.e., neuromuscular activation, microvascular oxygenation) to BFR cardiovascular exercise (i.e., cycling) has yet to be determined. Therefore, healthy subjects performed bouts of heavy (above estimated lactate threshold, LT) constant cycling exercise with and without BFR. No difference in oxygen uptake (VO2) was observed (p > 0.05) despite a greater deoxy-[Hb+Mb] response during the beginning and end of BFR exercise compared to control (CON) exercise (p

Download or read book Science and Application of High Intensity Interval Training written by Laursen, Paul and published by Human Kinetics. This book was released on 2019 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: The popularity of high-intensity interval training (HIIT), which consists primarily of repeated bursts of high-intensity exercise, continues to soar because its effectiveness and efficiency have been proven in use by both elite athletes and general fitness enthusiasts. Surprisingly, few resources have attempted to explain both the science behind the HIIT movement and its sport-specific application to athlete training. That’s why Science and Application of High-Intensity Interval Training is a must-have resource for sport coaches, strength and conditioning professionals, personal trainers, and exercise physiologists, as well as for researchers and sport scientists who study high-intensity interval training.

Download or read book An Interval Training Bout on Cognitive Performance in Healthy Adults written by David Young and published by . This book was released on 2014 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Author's abstract: Cognitive performance has been shown to improve with regular aerobic exercise training. Despite this, most Americans do not adhere to current exercise prescription guidelines. High intensity interval training (HIIT) has been suggested as a lower time commitment, more enjoyable alternative to regular aerobic exercise. Twenty nine apparently healthy college-aged adults were recruited and administered a high intensity interval training session with a pre- and 24 hours-post-exercise cognitive performance test. No changes were found in performance following the bout of high intensity interval training. No significant interactions were observed when comparing performance to gender, training age, training goal, or intra-exercise rating of perceived exertion (RPE). More study is needed to assess the efficacy of a long term HIIT intervention on cognitive performance changes using more sensitive testing procedures.

Download or read book Moderate to high Intensity Aerobic Interval Training Versus Continuous Aerobic Training in Real Life Centre Based Cardiac Rehabilitation written by Yael Pernick and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of High Intensity Interval Training HIIT on Vascular Function and Insulin Sensitivity written by Shinichiro Sugiura and published by . This book was released on 2015 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-intensity interval training (HIIT) is characterized by short bursts of vigorous physical activity, interspersed by periods of rest or low-intensity exercise of varying durations. HIIT may be used as an effective alternative to traditional endurance training, resulting in similar or greater improvements in a number of physiological, performance, and health-related indices in both healthy and in individuals with chronic diseases. The present thesis examined the effects of a two-week HIIT program on measures of aerobic fitness, vascular function (Chapter 3) and insulin sensitivity (Chapter 4). The first study demonstrated no effect on flow-mediated dilation or peak oxygen uptake following two weeks of HIIT with L-arginine supplement compared to HIIT alone, although both groups improved time to exhaustion and the peak work rate during progressive ramp exercise to fatigue. The results of the second study demonstrated six session of HIIT had no effect on glucose appearance and removal (i.e. oral glucose tolerance test, OGTT) or insulin sensitivity in healthy individuals with family history of type 2 diabetes mellitus (T2DM) or in healthy individuals without a family history of T2DM. However, results of the multiple regression analysis indicated that high density lipoprotein (HDL) and low density lipoprotein (LDL) significantly predicted insulin sensitivity in healthy individuals with a family history of T2DM. In order to prevent chronic diseases, such as T2DM, as well as other diseases that have a sedentary lifestyle as a primary risk factor, it is critical that individuals engage in regular physical activity in an effort to curb the rising trends in the prevalence of hypokinetic diseases. Although the results of the present investigation did not provide significant findings in this group of young, healthy adults, further investigations are necessary, including an examination of the physiological adaptations and compliance associated with longer term HIIT exercise programs, the inclusion of additional patient populations, and the optimal combination of exercise intensity, duration and recovery intervals in order to promote HIIT as an effective, efficient alternative training method.

Download or read book Aerobic Performance Adaptations to Duration Equated High Intensity Versus Sprint Interval Training Methods in an Athletic Population written by Mark Gifford and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: High aerobic capacity has been shown to be a key indicator of physical performance in field based athletes. From having the ability to maintain energy production during long duration activities as well as replenishing other metabolic systems, aerobic capacity is a necessity for athletes performing at high levels. This research set out to look at two different training modalities in improving aerobic capacity in an athletic population. Thirteen participants (9 males and 4 females, 22.1 ± 2.5 years; 171.9 ± 10.0 cm; 74.4 ± 11.3 kg) completed six-weeks of aerobic training three times per week in either High-intensity interval training (120% of VO[subscript 2max]) or Sprint interval training (all out). In this study six participants were in the High intensity Interval group and seven were in the Sprint Interval group. Participants completed an aerobic capacity test pre and post training on a high-speed treadmill in which, VO[subscript 2max], percentage of VO[subscript 2max] at Ventilatory Threshold (VT), VO[subscript 2] at VT, and Fast Slope of Excess Post Exercise Oxygen Consumption (EPOC) were all measured used open circuit spirometry. Following six-weeks of training significant Time main effects were observed for VO[subscript 2] at VT (Pre 30.0 +/- 2.4 mL/kg/min, Post 32.4 +/- 3.0 mL/kg/min), and Fast Slope of EPOC Recovery (Pre 21.7 +/- 3.5 mL/kg/min, Post 23.5 +/- 3.8 mL/kg/min), over the six-week training period. Due to a small sample size, interpretation of this data should be made with caution. However, these findings suggest that HIIT and SIT methodologies do not differ in their impact on adaptations to aerobic performance variables over a six week intervention period. More data collection is necessary to allow for more complete interpretation with appropriate statistical power.

Download or read book High Intensity Exercise in Hypoxia Beneficial Aspects and Potential Drawbacks written by and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past, 'traditional' moderate-intensity continuous training (60-75% peak heart rate) was the type of physical activity most frequently recommended for both athletes and clinical populations (cf. American College of Sports Medicine guidelines). However, growing evidence indicates that high-intensity interval training (80-100% peak heart rate) could actually be associated with larger cardiorespiratory fitness and metabolic function benefits and, thereby, physical performance gains for athletes. Similarly, recent data in obese and hypertensive individuals indicate that various mechanisms - further improvement in endothelial function, reductions in sympathetic neural activity, or in arterial stiffness - might be involved in the larger cardiovascular protective effects associated with training at high exercise intensities. Concerning hypoxic training, similar trends have been observed from 'traditional' prolonged altitude sojourns ('Live High Train High' or 'Live High Train Low'), which result in increased hemoglobin mass and blood carrying capacity. Recent innovative 'Live Low Train High' methods ('Resistance Training in Hypoxia' or 'Repeated Sprint Training in Hypoxia') have resulted in peripheral adaptations, such as hypertrophy or delay in muscle fatigue. Other interventions inducing peripheral hypoxia, such as vascular occlusion during endurance/resistance training or remote ischemic preconditioning (i.e. succession of ischemia/reperfusion episodes), have been proposed as methods for improving subsequent exercise performance or altitude tolerance (e.g. reduced severity of acute-mountain sickness symptoms). Postulated mechanisms behind these metabolic, neuro-humoral, hemodynamics, and systemic adaptations include stimulation of nitric oxide synthase, increase in anti-oxidant enzymes, and down-regulation of pro-inflammatory cytokines, although the amount of evidence is not yet significant enough. Improved O2 delivery/utilization conferred by hypoxic training interventions might also be effective in preventing and treating cardiovascular diseases, as well as contributing to improve exercise tolerance and health status of patients. For example, in obese subjects, combining exercise with hypoxic exposure enhances the negative energy balance, which further reduces weight and improves cardio-metabolic health. In hypertensive patients, the larger lowering of blood pressure through the endothelial nitric oxide synthase pathway and the associated compensatory vasodilation is taken to reflect the superiority of exercising in hypoxia compared to normoxia. A hypoxic stimulus, in addition to exercise at high vs. moderate intensity, has the potential to further ameliorate various aspects of the vascular function, as observed in healthy populations. This may have clinical implications for the reduction of cardiovascular risks. Key open questions are therefore of interest for patients suffering from chronic vascular or cellular hypoxia (e.g. work-rest or ischemia/reperfusion intermittent pattern; exercise intensity; hypoxic severity and exposure duration; type of hypoxia (normobaric vs. hypobaric); health risks; magnitude and maintenance of the benefits). Outside any potential beneficial effects of exercising in O2-deprived environments, there may also be long-term adverse consequences of chronic intermittent severe hypoxia. Sleep apnea syndrome, for instance, leads to oxidative stress and the production of reactive oxygen species, and ultimately systemic inflammation. Postulated pathophysiological changes associated with intermittent hypoxic exposure include alteration in baroreflex activity, increase in pulmonary arterial pressure and hematocrit, changes in heart structure and function, and an alteration in endothelial-dependent vasodilation in cerebral and muscular arteries. There is a need to explore the combination of exercising in hypoxia and association of hypertension, developmental defects, neuro-pathological and neuro-cognitive deficits, enhanced susceptibility to oxidative injury, and possibly increased myocardial and cerebral infarction in individuals sensitive to hypoxic stress. The aim of this Research Topic is to shed more light on the transcriptional, vascular, hemodynamics, neuro-humoral, and systemic consequences of training at high intensities under various hypoxic conditions.

Download or read book The Effects of Chronic High Intensity Interval Training on Cardiometabolic Health in Individuals With Spinal Cord Injury written by Mitchel Gibson and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Advancements in medicine and post-injury care has allowed for the extended life expectancy following spinal cord injuries (SCI). However, such advancements have led to a paradigm shift in the prevalence of secondary health complications from renal and pulmonary to cardiovascular and metabolic. In the able-bodied literature, accumulating evidence for high intensity interval training (HIIT) has shown that this time efficient, heart safe style of exercise may have advantages over moderate intensity continuous training (MICT) as a means to reduce cardiometabolic risk. The effectiveness of HIIT in an SCI population has yet to be explored. The current study examined the effectiveness of the "5 by 1" HIIT protocol over a 6-week timeframe, consisting of three supervised sessions per week in an SCI population. Outcome measures included VO2peak, cholesterol, triglycerides, waist circumference, blood pressure, pro an anti-inflammatory cytokine, and adipokines leptin and adiponectin. Results of the current study suggest that this protocol is an effective means to significantly improve aerobic fitness, however the intervention did induce significant metabolic change. Limitations such as small sample size (N=7) and the relatively short intervention duration may have limited these results. Further research focused on the effectiveness of HIIT in an SCI population is warranted to explore whether the metabolic benefit from HIIT may be dependent on a minimum baseline fitness level or power output that some individuals may not possess. In conclusion, the "5 by 1" HIIT protocol proved to be an effective means of improving aerobic capacity and therefore represents an alternative to the currently suggested MICT.

Download or read book Comparison of the Affective Responses to Continuous and High intensity Interval Training Protocols written by April D. Parrott and published by . This book was released on 2015 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-intensity interval training (HIIT) is time-efficient and has physiological benefits similar to or greater than that of continuous training (CT); however, there are mixed results regarding how HIIT protocols influence affect. The dual-mode model (DMM) is a framework for measuring this intensity-affect relationship. The purpose of this study was to compare acute affective responses between CT and HIIT protocols over time using the DMM as a theoretical framework. Participants were healthy, fit females (N = 12) ages 19-28. Participants completed a CT protocol set at their RCP (~80% VO2max) and a HIIT protocol consisting of a 2-min work interval (100% VO2max) followed by a 2-min rest interval (~55% VO2max) in a crossover design. Protocols were matched for average intensity using the rest interval, total duration, and energy expenditure (250 kcals). A repeated measures ANOVA analysis revealed there were no significant differences in affect between CT (M = 2.5, SD = 2.1) and HIIT (M = 2.6, SD = 2.1) protocols F(1.16,1.73) = .49, p = .648) over time. There were no significant differences in average HR (t = -.314, p = .759), RPE (t = .333, p = .745), or post protocol enjoyment (t = -.288, p = .492) between CT and HIIT. A visual depiction of the DMM showed there were no differences in patterning between the two protocols. Altering work-to-rest ratio and rest interval intensity in the HIIT protocol could potentially produce different affective responses. Protocols that have less dependence on anaerobic metabolism should produce more pleasurable responses.

Download or read book Effects of a Novel High Intensity Interval Training Protocol Versus Continuous Training in National and International Class Collegiate Rowers on Indices of Aerobic and Anaerobic Power written by Sylvie Danielle Richer and published by . This book was released on 2015 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this investigation was to compare 6 high intensity interval training (HIIT) sessions with predominately continuous training (CONT) over 11 days on highly trained rowers. Two groups (n=8) completed an incremental ramp test to determine Peak Aerobic Power (PAP), and a Critical Power test (CP). HIIT sessions consisted of 10 bouts of 10 s work (140% of PAP) with 5 s recovery, followed by 8 min of active recovery; repeated 6 times. 60 s power decreased in CONT (510±167-489±171W; p=0.02). CP increased in both groups (HIIT: 336±59-360±59W; CONT: 290±73-316±74W; p≤0.05). W' decreased in CONT only (14256±7022-11303±7360J; p=0.01). Mean Power Output Measure (MPOM) (10s, 60s, CP, and PAP) showed an improvement for HIIT (464±158- 496±184W; p=0.01) vs. CONT (433±186-433±181W; p30.05). This study has demonstrated that 6 sessions of a novel HIIT protocol will increase MPOM, while maintaining anaerobic capacity compared to a predominantly CONT training protocol in elite rowers.

Download or read book The Effect of Continuous Moderate Intensity Exercise Training Combined with High Intensity Interval Training on Cardiovascular Disease Risk Factors written by Brendon Hugh Roxburgh and published by . This book was released on 2013 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiovascular diseases (CVD) and type 2 diabetes are a major health and economic burden on society and without intervention, incidence will continue to increase. High intensity interval training (HIIT) is emerging as a time efficient strategy for improving risk factors of CVD and type 2 diabetes; however, there is a lack of research on HIIT in sedentary, at-risk individuals. Whilst HIIT has shown superior improvement in CVD risk factors, when compared with continuous moderate intensity exercise training (CMIET), it may be unrealistic to exclusively adopt this form of training as a lifestyle change. PURPOSE: The purpose of this study was to compare how 12 weeks of HIIT and CMIET affected cardiorespiratory fitness (VO2max), insulin sensitivity and other risk factors for CVD, in sedentary individuals at moderate risk of CVD. METHODS: Twenty nine sedentary subjects at moderate risk of CVD were recruited for 12 weeks of exercise training. Subjects were randomised into three groups: HIIT (n=9; 8-12 x 60 sec at 100% VO2max, 150 sec active recovery), CMIET (n=10; 30 min at 45-60% oxygen consumption reserve (VO2R)) and a sedentary control group (n=10). Participants in the HIIT group performed a single weekly bout of HIIT and four weekly sessions of CMIET, whilst the CMIET group performed five weekly CMIET sessions. Cardiorespiratory fitness, insulin sensitivity (HOMA model), blood lipids, body composition and quality of life were measured pre and post intervention. Probabilistic magnitude-based inferences were determined to assess the likelihood that the true value of the effect represented substantial change. RESULTS: Relative VO2max increased by 10.1% in in the HIIT group (32.7 ± 9.2 to 36.0 ± 11.5 mL·kg-1·min-1) and 3.9% in the CMIET group (33.2 ± 4.0 to 34.5 ± 6.1 mL·kg-1·min-1), whilst there was a 5.7% decrease in the control group (30.0 ± 4.6 to 28.3 ± 6.5 mL·kg-1·min-1). It was 'unclear' if a clinically significant difference existed between the HIIT and CMIET groups. There was a decrease in insulin sensitivity for both exercising groups (HIIT: 101 ± 27.3 to 90.3 ± 29.0%; CMIET: 95.6 ± 42.6 to 84.1 ± 25.6%), with a 'possibly trivial' clinical inference between groups. CONCLUSION: Both exercising groups showed clinically meaningful improvements in VO2max, body composition (hip and waist circumference), systolic and diastolic blood pressure and total and LDL cholesterol. However, it remains 'unclear' whether one type of exercise training regimen elicits a superior CVD risk factor reduction relative to its counterpart.

Download or read book The Effect of High Intensity Interval Training on VO2 Peak and Performance in Trained High School Rowers written by Natasha Carr and published by . This book was released on 2011 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Intensity Interval Training (HIIT) is a phrase quickly becoming popularized through current research due to the physical and physiological success this method of training has proven to yield in both untrained and trained individuals. There is no set definition used to describe HIIT, but it typically refers to repeated bouts of fairly brief intermittent exercise. A great deal of research outlines the benefits associated with utilizing HIIT in untrained and recreationally trained individuals. However, research on the effect HIIT has or could possibly have on the well-trained endurance athlete is limited, specifically in the sport of rowing. The purpose of this study was to analyze the effect of HIIT on VO2 peak and performance in trained rowers when compared to traditional, endurance training. It was hypothesized that HIIT would be just as effective at improving VO2 peak and performance as the endurance training protocol in well-trained rowers. A total of 20 high school female rowers participated in the study (mean ± SD; age = 16 ± 1). Baseline testing was comprised of a 2000m time-trial test on the Concept IIc Rowing Ergometer and a maximal exercise test, which was also completed on the Concept IIc Ergometer, in order to determine VO2 peak. Subjects were randomly assigned to a HIIT or endurance group for four weeks of intervention. Three days/week the HIIT group completed a 6 by 30second repeated Wingate protocol on the Concept II Ergometer at or above 100% VO2 peak, in which each 30s maximal effort was immediately followed by an active recovery of four-minutes. The endurance group completed 30 minutes of sub-maximal rowing at 65% of VO2 peak three days/week. After four weeks of intervention, post-testing took place, which was identical to baseline testing. Results from this study suggest HIIT was just as effective as endurance training at improving 2k time (mean ± SD; HIIT: 498.7 ± 23.1; Endurance: 497.5 ± 17.6). There were no significant within or between group differences in VO2 peak post-intervention (mean ± SD; HIIT: 44.8 ± 4.0; Endurance: 45.8 ± 5.6). The current study suggests four-weeks of HIIT training can yield similar adaptations in performance when compared to endurance training.