Cycling Exercise Training Alleviates Hypoxia-Impaired Erythrocyte Rheology

Chou, Szu-Ling; Huang, Yu-Chieh; Fu, Tieh‐Cheng; Hsu, Chih‐Chin

doi:10.1249/mss.0000000000000730

Cited by 15 publications

(13 citation statements)

References 31 publications

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“…Moderate continuous training / MCT. After training5 times/ week, for 5 weeks obtain increase of VO2 max and decrease of erythrocyte osmotic fragility which means the increase of erythrocyte membrane durability [3].…”

Section: Discussionmentioning

confidence: 99%

The Effects of Continuous and Interval Training Toward V̇O2max Increase for Male

Yunus¹,

Wahjuni²,

Supriatna³

2019

Proceedings of the 2nd International Conference on Sports Sciences and Health 2018 (2nd ICSSH 2018)

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The research aimed at investigating the difference of continuous and interval training toward maximum ⩒O2 increase.The research used randomized group pretest and posttest design. Population of the research were students of Sport Training Education Faculty of Sport Sciences Malang State. Sampling technique by using purposive random samplingwith sampling of 40 persons, divided into two groups with ordinal pairing, that is continuous and interval training groups. The trainings done three times with moderate intensity up to sub maximum and for 8 weeks. The research type was quasi experimental research with quantitative approach. Data collection done by using Multistage Fitness Test to measure maximum VO2 during pretest and posttest. Data analysis technique by using t-test and ANOVA by using α 0,05. The results showed the mean of VO2 max for pretest and posttest for continuous group was 40,89 and 46,18, while at the interval training group was 41,01 and 46,53.[mL.min-1.kg-1], From the t-test and ANOVA can be concluded (1)the continuous training influences significantly toward the⩒O2max increase; (2) the interval training influence significantly toward the ⩒O2max increase.; and (3)there is no significant influence between continuous and interval trainings toward the ⩒O2 max increase.

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Section: Discussionmentioning

confidence: 99%

The Effects of Continuous and Interval Training Toward V̇O2max Increase for Male

Yunus¹,

Wahjuni²,

Supriatna³

2019

Proceedings of the 2nd International Conference on Sports Sciences and Health 2018 (2nd ICSSH 2018)

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“…A standard echocardiographic examination according to the American Society of Echocardiography guidelines was performed at each stage 39 . Each subject underwent echocardiography 4 days before and after the intervention in an air-conditioned normobaric hypoxia chamber (Colorado Mountain Room, USA) 40 . The hypoxia chamber was maintained at a temperature of 22°C ± 0.5°C with a relative humidity of 60% ± 5%; a CO 2 scrubber eliminated CO 2 in the air (< 3500 ppm), and the O 2 concentration was set at 12%, which corresponded to an altitude of 4460 m. All subjects were positioned at a 30° semiupright position oriented in a left lateral 60° semisupine position and secured to the echocardiography table (Angio with Echo Cardiac Stress Table, Lode B.V., Netherlands).…”

Section: Conventional Echocardiographymentioning

confidence: 99%

High-intensity Interval Training Enhances Hypoxia-mediated Right Cardiac Mechanics in Sedentary Men

Huang¹,

Hsu²,

Fu³

2020

Preprint

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Purpose: Hypoxic exposure increases right ventricular (RV) afterload by triggering pulmonary hypertension, with consequent effects on the structure and function of the right ventricle. Improved myocardial contractility is a critical circulatory adaptation to exercise training. However, the types of exercise that enhance right cardiac mechanics during hypoxic stress have not yet been identified. This study investigated how high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) influence right cardiac mechanics during hypoxic exercise (HE). Methods: A total of 54 young and healthy sedentary males were randomly selected to engage in either HIIT (3-min intervals at 40% and 80% of VO2max, n = 18) or MICT (sustained 60% of VO2max, n = 18) for 30 min/day and 5 days/week for 6 weeks or were included in a control group (CTL, n = 18) that did not engage in any exercise. Right cardiac mechanics during semiupright bicycle exercise tests under hypoxic conditions (i.e., 50 watts under 12% FIO2 for 3 min) were measured using two-dimensional speckle-tracking echocardiography. Results: After 6 weeks of training, HIIT was superior to MICT in improving VO2max. Furthermore, the HIIT group showed reduced pulmonary vascular resistance (PVR) as well as an elevated RV ejection fraction (RVEF) under hypoxia, coupled with a significant enhancement of the right atrial (RA) reservoir and conduit functions. HIIT is superior to MICT in dilating the right ventricle and ameliorating radial strain rate but reducing radial strain in either systole or diastole. In the correlation analysis, the changes in RVEF were directly associated with improved RA reservoir and conduit functions but inversely associated with the change in radial RV strain caused by HIIT. Conclusion: HIIT is superior to MICT in improving right cardiac mechanics by simultaneously increasing RA reservoir and conduit functions and decreasing PVR during HE.

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“…Results of Chou, et.al, cycling interval training, 5 days a week, 30 minutes, average intensity 60% VO2Maks, during 5 weeks, can improve the aggregation, osmotic fragility and decrease the erythrocyte cell damage [26]. Chou, et.al, also studied about the continuous training with moderate intensity (MCT) [7].…”

Section: Based Onmentioning

confidence: 99%

A Comparative Study of Effect of Interval and Continuous Training toward Oxidative Stress Level, Antioxidant Enzyme Capacity, and Resistance of Erythrocyte Membrane

Yunus¹,

Wahjuni²,

Fadhli³

2018

Proceedings of the 2nd Yogyakarta International Seminar on Health, Physical Education, and Sport Science (YISHPESS 2018) and 1s

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this study examined the effects of interval and continuous trainings on decrease in the oxidative stress level, increase in the antioxidant enzyme capacity and increase in the resistance of erythrocyte membrane. The research was done randomly in group pretest and post-test design of 40 students in Sport Coaching Education, Sport Science Faculty, and Malang State University who were divided into two groups, that is, interval and continuous training groups. Research subject was taken with Purposive Randomized Sampling. They were trained 3 times a week, for 8 weeks with moderate intensity and 30 minutes for exercise. Data was collected by measurement technique of blood samples, that is, blood plasma MDA level, as indicator of oxidative stress level, blood plasma SOD activity as indicator of antioxidant enzyme capacity and osmotic fragility of erythrocyte as indicator of resistance of erythrocyte membrane. The results of Data analysis by use of MANOVA , with α 0,05, concluded that the interval and continuous trainings decreased the oxidative stress level and increased both the antioxidant enzyme capacity and the resistance of erythrocyte membrane with no significant influence differences between interval and continuous trainings toward dependent variables mentioned above. Keywords--training, oxidative stress, antioxidant enzyme, resistance of erythrocyte membrane.

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Cycling Exercise Training Alleviates Hypoxia-Impaired Erythrocyte Rheology

Abstract: Cycling AIT is superior to cycling MCT in enhancing aerobic capacity. Moreover, either cycling AIT or MCT effectively alleviates HE-evoked impairments of erythrocyte rheological characteristics and band 3 function.

Cited by 15 publications

References 31 publications

The Effects of Continuous and Interval Training Toward V̇O2max Increase for Male

The Effects of Continuous and Interval Training Toward V̇O2max Increase for Male

High-intensity Interval Training Enhances Hypoxia-mediated Right Cardiac Mechanics in Sedentary Men

A Comparative Study of Effect of Interval and Continuous Training toward Oxidative Stress Level, Antioxidant Enzyme Capacity, and Resistance of Erythrocyte Membrane

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