Acute Responses to High-Intensity Intermittent Exercise in CHD Patients

Guiraud, Thibaut; Nigam, Anil; Juneau, Martin; Meyer, Philippe; Gayda, Mathieu; Bosquet, Laurent

doi:10.1249/mss.0b013e3181ebc5de

Cited by 69 publications

(67 citation statements)

References 35 publications

(33 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For achieving the target EE in two isocaloric bouts of different intensities, two others studies measured _ VO 2 during exercise (Guiraud et al 2011;Parekh and Lee 2005). Guiraud et al (2011) compared the acute physiological responses of coronary heart disease patients to high-intensity interval exercise (15-s intervals at 100% of peak power output and 15-s passive recovery intervals for approximately 29 min) versus a moderate intensity continuous training (70% of peak power output for approximately 35 min) of similar EE.…”

Section: Discussionmentioning

confidence: 99%

“…Guiraud et al (2011) compared the acute physiological responses of coronary heart disease patients to high-intensity interval exercise (15-s intervals at 100% of peak power output and 15-s passive recovery intervals for approximately 29 min) versus a moderate intensity continuous training (70% of peak power output for approximately 35 min) of similar EE. Parekh and Lee (2005) prescribed isocaloric bouts of 300 kcal aiming to compare the influence of moderate (50% _ VO 2 R) and vigorous (80% _ VO 2 R) intensities on post-exercise cardiac autonomic modulation in health males.…”

Section: Discussionmentioning

confidence: 99%

“…Accordingly, the prescription of isocaloric training bouts has been applied in exercise programs for weight management and improvement of aerobic fitness (Swain and Franklin 2006). Previous studies have demonstrated that under isocaloric training conditions, vigorous intensity exercise would be more effective for improving cardiorespiratory fitness and decreasing body fat than would moderate intensity exercise (Gormley et al 2008;Guiraud et al 2011;Rognmo et al 2004;Schjerve et al 2008;Wisloff et al 2007).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Do the speeds defined by the American College of Sports Medicine metabolic equation for running produce target energy expenditures during isocaloric exercise bouts?

et al. 2011

View full text Add to dashboard Cite

The accuracy of the American College of Sports Medicine (ACSM) equations for producing predicted values of heart rate reserve (HRR) and oxygen uptake reserve (VO2R) and consequently, target energy expenditure (EE) during exercise are yet to be established. This study investigated whether speeds defined by the ACSM metabolic equation for running correctly estimate the EEs during isocaloric exercise bouts. Twenty-eight men performed a ramp-incremental maximal exercise test to determine HRmax and VO2max. Two continuous exercise bouts at 60 and 80% VO2R and target EE of 400 kcal were then performed. In the 60% VO2R exercise the observed VO2R and EE were lower than predicted only during the first time quartile of the bout (t = 6.5, p < 0.001), whereas at 80% VO2R it was lower during the first (t = 15.3, p < 0.001), second (t = 5.4, p < 0.001) and third (t = 3.1, p = 0.025) quartiles. The observed HR was lower than predicted in the first time quartile of the 60% [Formula: see text] (t = 5.6, p < 0.001) and 80% VO2R bouts (t = 10.7, p < 0.001), whereas no significant differences occurred for any other time quartiles (p ≥ 0.23). In conclusion, the running speed defined by the ACSM metabolic equation overestimated VO2R and EE within exercise performed at 60 and 80% VO2R especially in higher intensities.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Do the speeds defined by the American College of Sports Medicine metabolic equation for running produce target energy expenditures during isocaloric exercise bouts?

et al. 2011

View full text Add to dashboard Cite

show abstract

“…This was followed up by a study that demonstrated comparable increases in heart rate, systolic blood pressure, cardiac output and leg fatigue during steady-state and interval exercise in CVD patients (Meyer et al 1998). Lastly, in an examination of interval exercise there were no post-exercise elevations in troponin T, indicating the high-intensity exercise did not elicit myocardial injury (Guiraud et al 2011). In sum, these studies demonstrate that interval exercise does not elicit detrimental changes in cardiovascular functioning, and therefore should be considered safe for patients with CAD.…”

Section: Acute Responses To Interval Exercisementioning

confidence: 93%

“…These recent reviews also highlight that there are a variety of interval exercise protocols currently being employed in populations with CAD, each demonstrating favorable improvements. While there is currently no consensus on the optimal interval protocol, recent work from Guiraud et al (2011) has suggested shorter work periods interspersed with short passive recovery periods is optimal compared to longer work periods and active recovery. The chronic effects of this interval protocol, however, have yet to be established.…”

Section: Chronic Effects Of Interval Exercisementioning

confidence: 99%

Effects of acute and chronic low-volume high-intensity interval exercise on cardiovascular health in patients with coronary artery disease

Currie

2013

Appl. Physiol. Nutr. Metab.

View full text Add to dashboard Cite

The merits of low-volume high-intensity interval exercise (HIT) have been established in healthy populations; however, no studies have examined this exercise prescription in patients with coronary artery disease (CAD). The present thesis examined the acute and chronic effects of HIT in patients with CAD. The first study demonstrated transient improvements in brachial artery endothelial-dependent function, which was assessed using flow-mediated dilation (FMD) 60 min following a single bout of either HIT or moderate-intensity endurance exercise (END) in habitually active patients. The second study demonstrated no effects of training status on the acute endothelial responses to exercise; following 12-weeks of either HIT or END training. However, there was a significant reduction in endothelial-independent function immediately postexercise, at both pre- and post-training, which requires further examination. The third study demonstrated comparable increases in fitness and resting FMD following 12-weeks of END and HIT, lending support to the notion that favourable adaptations are obtainable with a smaller volume of exercise. Finally, the fourth study demonstrated no change in heart rate recovery following 12-weeks of END and HIT. However, pre-training heart rate recovery values reported by our sample were in a low risk range, which suggests training induced improvements may only be achievable in populations with attenuated pre-training values. The results of this thesis provide preliminary evidence that supports the use of HIT in patients with CAD. The findings of favourable transient and chronic improvements following HIT are notable, especially given that the HIT protocol involves less time and work than END, which was modelled after the current exercise prescription in cardiac rehabilitation. Further investigations are necessary, including the assessment of additional physiological indices; the feasibility and adherence to HIT; the inclusion of CAD populations with comorbidities, including heart failure and diabetes; as well as other forms of HIT training, including HIT combined with resistance training.

show abstract

Optimal Intensity and Duration of Walking Rehabilitation in Patients With Chronic Stroke

et al. 2023

View full text Add to dashboard Cite

ImportanceFor walking rehabilitation after stroke, training intensity and duration are critical dosing parameters that lack optimization.ObjectiveTo assess the optimal training intensity (vigorous vs moderate) and minimum training duration (4, 8, or 12 weeks) needed to maximize immediate improvement in walking capacity in patients with chronic stroke.Design, Setting, and ParticipantsThis multicenter randomized clinical trial using an intent-to-treat analysis was conducted from January 2019 to April 2022 at rehabilitation and exercise research laboratories. Survivors of a single stroke who were aged 40 to 80 years and had persistent walking limitations 6 months or more after the stroke were enrolled.InterventionsParticipants were randomized 1:1 to high-intensity interval training (HIIT) or moderate-intensity aerobic training (MAT), each involving 45 minutes of walking practice 3 times per week for 12 weeks. The HIIT protocol used repeated 30-second bursts of walking at maximum safe speed, alternated with 30- to 60-second rest periods, targeting a mean aerobic intensity above 60% of the heart rate reserve (HRR). The MAT protocol used continuous walking with speed adjusted to maintain an initial target of 40% of the HRR, progressing up to 60% of the HRR as tolerated.Main Outcomes and MeasuresThe main outcome was 6-minute walk test distance. Outcomes were assessed by blinded raters after 4, 8, and 12 weeks of training.ResultsOf 55 participants (mean [SD] age, 63 [10] years; 36 male [65.5%]), 27 were randomized to HIIT and 28 to MAT. The mean (SD) time since stroke was 2.5 (1.3) years, and mean (SD) 6-minute walk test distance at baseline was 239 (132) m. Participants attended 1675 of 1980 planned treatment visits (84.6%) and 197 of 220 planned testing visits (89.5%). No serious adverse events related to study procedures occurred. Groups had similar 6-minute walk test distance changes after 4 weeks (HIIT, 27 m [95% CI, 6-48 m]; MAT, 12 m [95% CI, −9 to 33 m]; mean difference, 15 m [95% CI, −13 to 42 m]; P = .28), but HIIT elicited greater gains after 8 weeks (58 m [95% CI, 39-76 m] vs 29 m [95% CI, 9-48 m]; mean difference, 29 m [95% CI, 5-54 m]; P = .02) and 12 weeks (71 m [95% CI, 49-94 m] vs 27 m [95% CI, 3-50 m]; mean difference, 44 m [95% CI, 14-74 m]; P = .005) of training; HIIT also showed greater improvements than MAT on some secondary measures of gait speed and fatigue.Conclusions and RelevanceThese findings show proof of concept that vigorous training intensity is a critical dosing parameter for walking rehabilitation. In patients with chronic stroke, vigorous walking exercise produced significant and meaningful gains in walking capacity with only 4 weeks of training, but at least 12 weeks were needed to maximize immediate gains.Trial RegistrationClinicalTrials.gov Identifier: NCT03760016

show abstract

Acute Responses to High-Intensity Intermittent Exercise in CHD Patients

Abstract: when considering physiological responses, safety, and perceived exertion, the HIIE protocol seemed to be well tolerated and more efficient in this group of stable CHD patients.

Cited by 69 publications

References 35 publications

Do the speeds defined by the American College of Sports Medicine metabolic equation for running produce target energy expenditures during isocaloric exercise bouts?

Do the speeds defined by the American College of Sports Medicine metabolic equation for running produce target energy expenditures during isocaloric exercise bouts?

Effects of acute and chronic low-volume high-intensity interval exercise on cardiovascular health in patients with coronary artery disease

Optimal Intensity and Duration of Walking Rehabilitation in Patients With Chronic Stroke

Contact Info

Product

Resources

About