Acute Physiological Responses During High Intensity Interval Training and Continuous Exercise Training PDF Download
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Author: Michelle M. Harbin
Publisher:
ISBN:
Category : Exercise
Languages : en
Pages : 96
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Book Description
The aim of this study was to investigate the correlation between improvements in aerobic and anaerobic power with various acute physiological responses, including blood lactate accumulation (HLa), percent heart rate reserve (%HRR), Rating of Perceived Exertion (RPE), session RPE (sRPE), and the training impulse (TRIMP) during high intensity interval training (HIIT) compared to moderate intensity interval training and continuous training. Fifty-five subjects aged 18 to 29 completed a pre and post VO2max and Wingate test on the cycle ergometer. Subjects completed 24 sessions of either a steady-state exercise control at 90% of the power output (PO) at the ventilatory threshold (VT), a Meyer interval protocol with 30:60 seconds exercise-to-rest ratio at 100% of peak power output (PPO), or a Tabata interval protocol with 20:10 seconds exercise-to-rest ratio at 170% of VO2max.
Author: Michelle M. Harbin
Publisher:
ISBN:
Category : Exercise
Languages : en
Pages : 96
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Book Description
The aim of this study was to investigate the correlation between improvements in aerobic and anaerobic power with various acute physiological responses, including blood lactate accumulation (HLa), percent heart rate reserve (%HRR), Rating of Perceived Exertion (RPE), session RPE (sRPE), and the training impulse (TRIMP) during high intensity interval training (HIIT) compared to moderate intensity interval training and continuous training. Fifty-five subjects aged 18 to 29 completed a pre and post VO2max and Wingate test on the cycle ergometer. Subjects completed 24 sessions of either a steady-state exercise control at 90% of the power output (PO) at the ventilatory threshold (VT), a Meyer interval protocol with 30:60 seconds exercise-to-rest ratio at 100% of peak power output (PPO), or a Tabata interval protocol with 20:10 seconds exercise-to-rest ratio at 170% of VO2max.
Author: Laursen, Paul
Publisher: Human Kinetics
ISBN: 1492552127
Category : Sports & Recreation
Languages : en
Pages : 672
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Book Description
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.
Author: Michitoshi Inoue
Publisher: Springer Science & Business Media
ISBN: 4431683674
Category : Medical
Languages : en
Pages : 330
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Book Description
Research centering on blood flow in the heart continues to hold an important position, especially since a better understanding of the subject may help reduce the incidence of coronary arterial disease and heart attacks. This book summarizes recent advances in the field; it is the product of fruitful cooperation among international scientists who met in Japan in May, 1990 to discuss the regulation of coronary blood flow.
Author: James Warren Salassi (III.)
Publisher:
ISBN: 9781303796227
Category : Aerobic exercises
Languages : en
Pages : 0
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Book Description
Abstract: This study compared the acute cardiopulmonary and metabolic effects of four high-intensity interval training (HIIT) protocols using varying intensities during the work and recovery periods. Eleven participants (5 males, 6 females) performed four, 20-minute HIIT protocols at a 1:1 "work:recovery" ratio on a cycle ergometer in random order. The work:recovery relative intensities, based upon previously determined maximum work rates, were: 80%:0%, 80%:50%, 100%:0%, and 100%:50%. Oxygen uptake, heart rate, blood lactate, and rating of perceived exertion were measured. Data were analyzed using a two-way, repeated measures ANOVA (p ≤ 0.05). Oxygen uptake and heart rate were expressed as a percentage of the peak values established during a prior graded exercise test. There were clear differences in physiological response between protocols. The 80:50 and 100:0 may produce the best combination of effects. The 100:50 produced the greatest physiological response, however, it may not be practical for the general population.
Author: Bryan C. Lund
Publisher:
ISBN: 9781369484137
Category : Cycling
Languages : en
Pages : 79
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Book Description
Abstract: This study compared the physiological responses to an acute bout of High Intensity Interval Training (HIIT) done at different pedal rates. 9 participants performed 3, 20-minute HIIT protocols consisting of a 1:1 "work:recovery" ratio on a cycle ergometer at intensities equivalent to 80% and 50% (respectively) of their PPO found from a graded exercise test. Participants' freely chosen cadence were found then a high cadence (HC) and low cadence (LC) were then calculated to be 25% above and below that. During each HIIT session oxygen uptake (VO2), heart rate (HR), minute ventilation (V ́ E), blood lactate (bLa), and rating of perceived exertion (RPE) were measured. Averages, mean peak values, and mean nadir values were calculated then analyzed using a repeated measures ANOVA (p ≤0.05). HR, VO2, and V ́E were expressed as a percentage of the peak values obtained during the GXT. Results indicate a significant effect from cadence on all measures, but post hoc revealed varying results for the pairwise comparisons.
Author: Olivier Girard
Publisher: Frontiers Media SA
ISBN: 2889454061
Category :
Languages : en
Pages : 169
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Book Description
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.
Author: Anton J. Volovsek
Publisher:
ISBN:
Category :
Languages : en
Pages : 146
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Book Description
Author: Mary K. Cresanta
Publisher:
ISBN:
Category : Aerobic exercises
Languages : en
Pages : 184
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Book Description
Author: Amanda Katy Rizk
Publisher:
ISBN:
Category :
Languages : en
Pages : 221
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Book Description
Study Objectives: i) To describe and compare, in COPD patients, the acute physiological, symptomatic, and affective responses to continuous training at a high intensity (CTHI), continuous training at the ventilatory threshold (CTVT), and interval training (IT); ii) To examine the nature and degree of association between acute measures of intensity and adherence to a 12-week exercise-training program; iii) To investigate whether the relationship between acute responses and adherence is mediated or moderated by affect/vigor. Methods: Thirty-five COPD patients (FEV1 = 60.2 ± 15.8 % predicted) underwent baseline assessments, were randomly assigned to CTHI, CTVT, or IT, were monitored during a single exercise-training bout, and subsequently took part in a 12-week exercise-training program. Physiological, symptomatic, and affective responses were measured using a portable system, the PANAS and GVA questionnaires, and the Borg scale; respectively. Adherence was defined as the percent time spent within the target heart rate range for attended sessions. Results: In comparison to CTHI, CTVT was associated with lower levels of RER, HR, and RR, whereas IT was associated with higher levels of VE, VE/MVV, RR, and a greater drop in SpO2. Affective state generally improved from pre- to post-exercise, with increases in positive affect (F=9.74, p
Author: Jamie K. Pugh
Publisher:
ISBN:
Category :
Languages : en
Pages :
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