Comparative efficiency of continuous trainings and aerobic interval training in patients after myocardial infarction

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
Y Dovgalyuk ◽  
Y.U.V Chistyakova ◽  
L.L Jarchenkova ◽  
S.O Fokicheva ◽  
A.A Zolotareva ◽  
...  
Keyword(s):  
Heart Rate ◽  
Oxygen Uptake ◽  
Physical Training ◽  
Interval Training ◽  
Primary Angioplasty ◽  
Peak Oxygen Uptake ◽  
Maximal Heart Rate ◽  
Aerobic Interval Training ◽  
Medical Academy ◽  
State Medical Academy

Abstract Background The basis of cardiac rehabilitation programs (CRP) is aerobic physical training, which improves exercise capacity in patients with an acute myocardial infarction (MI) after primary angioplasty of the infarct-related vessel. However, which type - aerobic interval training (AIT) or aerobic continuous trainings (ACT) are most effective for improving peak oxygen uptake (VO2 max) remains unclear and controversial. Purpose To evaluate the effects of CRP, including AIT or ACT, on exercise capacity and lung function in patients with MI after primary angioplasty of the infarct-related vessel. Methods Seventy MI patients (58 men and 12 women, mean age – 59,2±8,0 years) were undergone the three-week CRP in the Ivanovo State Medical Academy Clinic. The CRP for all patients included: daily controlled physical training on the Bicycle Ergometer and Treadmill, group exercises in therapeutic gymnastics, dosed walking and walking on the stairs with an individually calculated pace. Depending on the mode of physical training all patients were randomized of five weekly sessions in to two groups, comparable in age and gender: AIT group (35 patients) and ACT group (35 patients). The ACT group was training at 50–60% of peak heart rate. The AIT group protocol consisted of ten 1-min intervals at 85–90% of maximal heart rate separated by ten 1-min active recovery periods of moderate intensity at 40–60% of the maximal heart rate. Changes in 6-min walk distance test (6MWT), peak oxygen uptake (VO2max), relative load power, total lung capacity (TLC) and forced expiratory volume in one second (FEV1) before and after CRP were investigated. Data are presented as a median (interquartile ratio [Q1; Q3]). Results After finishing CRP 6MWT distance increased in both groups, but was higher in AIT group 492 [460–510] m compared to the ACT group – 465 [424–510] m (p<0.05). Peak oxygen uptake increased more (p<0.05) after AIT: from 16.8 [15.3–19.8] to 20.7 [16.5–21.9] ml kg–1 min–1 (p<0.05), than after ACT – from 15.8 [14.7–18.6] to 16.1 [15.8–20.5] ml kg–1 min–1 (p>0.05). At the end of the CRP relative load power during cardiopulmonary exercise test was higher in AIT group compared to the ACT group: 1.5 [1.3–1.7] vs 1.2 [1.0–1.5] Wt/kg respectively (p<0.05). In the AIT group TLC increased significantly from 3.13 [2.63–4.05] to 4.14 [3.91–4.87] L (p<0.05) then in ACT group: from 3.19 [2.82–3.74] to 3.21 [3.03–3.57] L (p>0.05). FEV1 had no changes in both groups. Both programs reduced anxiety and depression, systolic and diastolic blood pressure and increased quality of life. Conclusion AIT as compared to ACT provided a more pronounced training effect on the cardiorespiratory system due to high-intensity loading phases. Therefore, AIT is more preferable in cardiac rehabilitation of patients with MI after primary angioplasty of the infarct-related vessel. Funding Acknowledgement Type of funding source: Public Institution(s). Main funding source(s): Ivanovo State Medical Academy

Aerobic interval training increases peak oxygen uptake more than usual care exercise training in myocardial infarction patients: a randomized controlled study

2011 ◽  
Vol 26 (1) ◽  
pp. 33-44 ◽  
Author(s):  
Trine Moholdt ◽  
Inger Lise Aamot ◽  
Ingrid Granøien ◽  
Lisbeth Gjerde ◽  
Gitte Myklebust ◽  
...  
Keyword(s):  
Heart Rate ◽  
Exercise Training ◽  
Oxygen Uptake ◽  
Usual Care ◽  
Interval Training ◽  
Peak Oxygen Uptake ◽  
Peak Heart Rate ◽  
Randomized Controlled ◽  
Aerobic Interval Training

Objective: Exercise capacity strongly predicts survival and aerobic interval training (AIT) increases peak oxygen uptake effectively in cardiac patients. Usual care in Norway provides exercise training at the hospitals following myocardial infarction (MI), but the effect and actual intensity of these rehabilitation programmes are unknown. Design: Randomized controlled trial. Setting: Hospital cardiac rehabilitation. Subjects: One hundred and seven patients, recruited two to 12 weeks after MI, were randomized to usual care rehabilitation or treadmill AIT. Interventions: Usual care aerobic group exercise training or treadmill AIT as 4 × 4 minutes intervals at 85–95% of peak heart rate. Twice weekly exercise training for 12 weeks. Main measures: The primary outcome measure was peak oxygen uptake. Secondary outcome measures were endothelial function, blood markers of cardiovascular disease, quality of life, resting heart rate, and heart rate recovery. Results: Eighty-nine patients (74 men, 15 women, 57.4 ± 9.5 years) completed the programme. Peak oxygen uptake increased more ( P = 0.002) after AIT (from 31.6 ± 5.8 to 36.2 ± 8.6 mL·kg−1·min−1, P < 0.001) than after usual care rehabilitation (from 32.2 ± 6.7 to 34.7 ± 7.9 mL·kg−1·min−1, P < 0.001). The AIT group exercised with significantly higher intensity in the intervals compared to the highest intensity in the usual care group (87.3 ± 3.9% versus 78.7 ± 7.2% of peak heart rate, respectively, P < 0.001). Both programmes increased endothelial function, serum adiponectin, and quality of life, and reduced serum ferritin and resting heart rate. High-density lipoprotein cholesterol increased only after AIT. Conclusions: AIT increased peak oxygen uptake more than the usual care rehabilitation provided to MI patients by Norwegian hospitals.

scholarly journals Reference values for peak oxygen uptake: cross-sectional analysis of cycle ergometry-based cardiopulmonary exercise tests of 10 090 adult German volunteers from the Prevention First Registry

BMJ Open ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. e018697 ◽  
Author(s):  
Daniel Rapp ◽  
Jürgen Scharhag ◽  
Stefan Wagenpfeil ◽  
Johannes Scholl
Keyword(s):  
Heart Rate ◽  
Oxygen Uptake ◽  
Reference Values ◽  
Peak Oxygen Uptake ◽  
Cycle Ergometry ◽  
Maximal Heart Rate ◽  
Exercise Tests ◽  
Cross Sectional ◽  
Men And Women ◽  
Cardiopulmonary Exercise

ObjectiveThis study aims to construct quantile reference values for peak oxygen uptake (V̇O2peak) measured by cycle ergometry-based incremental cardiopulmonary exercise tests.DesignCross-sectional study using quantile regressions to fit sex-specific and age-specific quantile curves. Exercise tests were conducted using cycle ergometry. Maximal effort in the exercise tests was assumed when respiratory exchange ratio  ≥1.1 or lactate ≥8 mmol/L or maximal heart rate ≥90% of the age-predicted maximal heart rate. This was assessed retrospectively for a random subsample with an a priori calculated sample size of n=252 participants.SettingA network of private outpatient clinics in three German cities recorded the results of cycle ergometry-based cardiopulmonary exercise tests to a central database (Prevention First Registry) from 2001 to 2015.Participants10 090 participants (6462 men, 3628 women) from more than 100 local companies volunteered in workplace health promotion programmes. Participants were aged 21 to 83 years, were free of acute complaints and had primarily sedentary working environments.Main outcome measurePeak oxygen uptake was measured as absolute V̇O2peakin litres of oxygen per minute and relative V̇O2peakin millilitres of oxygen per kilogram of body mass per minute.ResultsThe mean age for both men and women was 46 years. Median relative V̇O2peakwas 36 and 30 mL/kg/min at 40 to 49 years, as well as 32 and 26 mL/kg/min at 50 to 59 years for men and women, respectively. An estimated proportion of 97% of the participants performed the exercise test until exertion.ConclusionsReference values and nomograms for V̇O2peakwere derived from a large sample of preventive healthcare examinations of healthy white-collar workers. The presented results can be applied to participants of exercise tests using cycle ergometry who are part of a population that is comparable to this study.

scholarly journals Physiological aspects and energetic contribution in 20s:10s high-intensity interval exercise at different intensities

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9791
Author(s):  
Gabriel V. Protzen ◽  
Charles Bartel ◽  
Victor S. Coswig ◽  
Paulo Gentil ◽  
Fabricio B. Del Vecchio
Keyword(s):  
Heart Rate ◽  
Blood Lactate ◽  
Power Output ◽  
High Intensity ◽  
Interval Training ◽  
Random Order ◽  
Peak Power Output ◽  
Maximal Heart Rate ◽  
Work Intensity ◽  
High Intensity Interval

Background One of the most popular high-intensity interval exercises is the called “Tabata Protocol”. However, most investigations have limitations in describing the work intensity, and this fact appears to be due to the protocol unfeasibility. Furthermore, the physiological demands and energetic contribution during this kind of exercise remain unclear. Methods Eight physically active students (21.8 ± 3.7 years) and eight well-trained cycling athletes (27.8 ± 6.4 years) were enrolled. In the first visit, we collected descriptive data and the peak power output (PPO). On the next three visits, in random order, participants performed interval training with the same time structure (effort:rest 20s:10s) but using different intensities (115%, 130%, and 170% of PPO). We collected the number of sprints, power output, oxygen consumption, blood lactate, and heart rate. Results The analysis of variance for multivariate test (number of sprints, power output, blood lactate, peak heart rate and percentage of maximal heart rate) showed significant differences between groups (F = 9.62; p = 0.001) and intensities (F = 384.05; p < 0.001), with no interactions (F = 0.94; p = 0.57). All three energetic contributions and intensities were different between protocols. The higher contribution was aerobic, followed by alactic and lactic. The aerobic contribution was higher at 115%PPO, while the alactic system showed higher contribution at 130%PPO. In conclusion, the aerobic system was predominant in the three exercise protocols, and we observed a higher contribution at lower intensities.

scholarly journals Predicting maximal oxygen uptake from a 3-minute progressive knee-ups and step test

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e10831
Author(s):  
Yu-Chun Chung ◽  
Ching-Yu Huang ◽  
Huey-June Wu ◽  
Nai-Wen Kan ◽  
Chin-Shan Ho ◽  
...  
Keyword(s):  
Heart Rate ◽  
Body Composition ◽  
Oxygen Uptake ◽  
Cardiorespiratory Fitness ◽  
Peak Oxygen Uptake ◽  
Step Test ◽  
Fat Percentage ◽  
Fitness Assessment ◽  
Adult Participants ◽  
Health Related

Background Cardiorespiratory fitness assessment is crucial for diagnosing health risks and assessing interventions. Direct measurement of maximum oxygen uptake (V̇O2 max) yields more objective and accurate results, but it is practical only in a laboratory setting. We therefore investigated whether a 3-min progressive knee-up and step (3MPKS) test can be used to estimate peak oxygen uptake in these settings. Method The data of 166 healthy adult participants were analyzed. We conducted a V̇O2 max test and a subsequent 3MPKS exercise test, in a balanced order, a week later. In a multivariate regression model, sex; age; relative V̇O2 max; body mass index (BMI); body fat percentage (BF); resting heart rate (HR0); and heart rates at the beginning as well as at the first, second, third, and fourth minutes (denoted by HR0, HR1, HR2, HR3, and HR4, respectively) during a step test were used as predictors. Moreover, R2 and standard error of estimate (SEE) were used to evaluate the accuracy of various body composition models in predicting V̇O2max. Results The predicted and actual V̇O2 max values were significantly correlated (BF% model: R2 = 0.624, SEE = 4.982; BMI model: R2 = 0.567, SEE = 5.153). The BF% model yielded more accurate predictions, and the model predictors were sex, age, BF%, HR0, ΔHR3−HR0, and ΔHR3−HR4. Conclusion In our study, involving Taiwanese adults, we constructed and verified a model to predict V̇O2 max, which indicates cardiorespiratory fitness. This model had the predictors sex, age, body composition, and heart rate changes during a step test. Our 3MPKS test has the potential to be widely used in epidemiological research to measure V̇O2 max and other health-related parameters.

Verification phase as a useful tool in the determination of the maximal oxygen uptake of distance runners

2006 ◽  
Vol 31 (5) ◽  
pp. 541-548 ◽  
Author(s):  
Adrian W. Midgley ◽  
Lars R. McNaughton ◽  
Sean Carroll
Keyword(s):  
Heart Rate ◽  
Oxygen Uptake ◽  
Maximal Oxygen Uptake ◽  
Peak Oxygen Uptake ◽  
Treadmill Running ◽  
Distance Runners ◽  
Peak Heart Rate ◽  
Incremental Test ◽  
Volitional Exhaustion

This study investigated the utility of a verification phase for increasing confidence that a “true” maximal oxygen uptake had been elicited in 16 male distance runners (mean age (±SD), 38.7  (± 7.5 y)) during an incremental treadmill running test continued to volitional exhaustion. After the incremental test subjects performed a 10 min recovery walk and a verification phase performed to volitional exhaustion at a running speed 0.5 km·h–1 higher than that attained during the last completed stage of the incremental phase. Verification criteria were a verification phase peak oxygen uptake ≤ 2% higher than the incremental phase value and peak heart rate values within 2 beats·min–1 of each other. Of the 32 tests, 26 satisfied the oxygen uptake verification criterion and 23 satisfied the heart rate verification criterion. Peak heart rate was lower (p = 0.001) during the verification phase than during the incremental phase, suggesting that the verification protocol was inadequate in eliciting maximal values in some runners. This was further supported by the fact that 7 tests exhibited peak oxygen uptake values over 100 mL·min–1 (≥ 3%) lower than the peak values attained in the incremental phase. Further research is required to improve the verification procedure before its utility can be confirmed.

A low-calorie diet with or without interval exercise training improves adiposopathy in obese women

2019 ◽  
Vol 44 (10) ◽  
pp. 1057-1064 ◽  
Author(s):  
Nicole M. Gilbertson ◽  
Natalie Z.M. Eichner ◽  
Emily M. Heiston ◽  
Julian M. Gaitán ◽  
Monique E. Francois ◽  
...  
Keyword(s):  
Heart Rate ◽  
Body Composition ◽  
Insulin Sensitivity ◽  
Oxygen Uptake ◽  
Peak Oxygen Uptake ◽  
Energy Deficit ◽  
Obese Women ◽  
Interval Exercise ◽  
Low Calorie Diet ◽  
Calorie Diet

The objective of this study was to test if a low-calorie diet plus interval exercise (LCD+INT) improves adiposopathy, an endocrine dysfunction, when compared with an energy-deficit–matched LCD in obese women. Subjects (age: 48.2 ± 2.4 years, body mass index: 37.8 ± 1.3 kg/m2) were randomized to a 13-day LCD (n = 12; mixed meals of ∼1200 kcal/day) or LCD+INT (n = 12; 12 sessions of 60 min/day alternating 3 min at 50% and 90% peak heart rate). Exercise was estimated to expend 350 kcal per oxygen uptake–heart rate regression analysis and individuals were refed calories expended to match energy availability between groups. Absolute (post – pre caloric intake) and relative (total daily and exercise energy expenditure relative to calorie intake) energy deficits were calculated. Fitness (peak oxygen uptake) and body composition (BodPod; Cosmed USA Inc.) were measured and a 120-min, 75g oral glucose tolerance test was performed at pre- and post-intervention to assess adiposopathy (i.e., ratio of high molecular weight–adiponectin to leptin) and estimate insulin sensitivity. LCD and LCD+INT had similar absolute (P = 0.55) and relative (P = 0.76) energy deficits. LCD and LCD+INT had similar reductions in fat mass (both P < 0.001), despite LCD inducing greater weight loss (P = 0.02) than LCD+INT. Both treatments improved adiposopathy (P = 0.003) and peripheral insulin sensitivity (P = 0.02). Absolute energy deficit correlated to improved adiposopathy (r = –0.41, P = 0.05), and absolute and relative energy deficits were associated with increased insulin sensitivity (r = –0.47, P = 0.02; and r = –0.40, P = 0.05, respectively), independent of body composition changes and increased peak oxygen uptake. Taken together, LCD, with or without INT, improves adiposopathy in relation to insulin sensitivity in obese women, suggesting that a short-term energy deficit is key for reducing risk of type 2 diabetes.

Aerobic work capacity in middle-aged Norwegian men

1965 ◽  
Vol 20 (3) ◽  
pp. 432-436 ◽  
Author(s):  
K. Lange Andersen ◽  
Lars Hermansen
Keyword(s):  
Heart Rate ◽  
Oxygen Uptake ◽  
Age Groups ◽  
Older Men ◽  
Work Capacity ◽  
Maximal Heart Rate ◽  
Middle Aged ◽  
Younger Age ◽  
Exercise Induced ◽  
Aerobic Work Capacity

Maximal oxygen uptake and related respiratory and circulatory functions were measured in sedentary and well-trained middle-aged men. Maximal oxygen uptakes averaged 2.63 liter/min in sedentary men and 3.36 liter/min in well-trained men, the latter value being essentially the same as found in young untrained students. The heart rate/ oxygen uptake relationship was found to be the same for sedentary-living men, regardless of age, but maximal heart rate was lower in older men. The maximal heart rate is probably the same in well-trained as in sedentary middle-aged men, this in contrast to what has been observed in younger age groups, where training reduces maximal heart rate. The exercise-induced hyperventilation takes place at an oxygen uptake corresponding to 70–80% of the capacity, this being the same in trained and untrained, and essentially the same as found in young adult subjects. maximal O2 uptake Submitted on March 23, 1964

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