Locatelli, JC, Simões, CF, Reck, HB, de Oliveira, GH, de Souza Mendes, VH, Oxborough, D, Okawa, RTP and Lopes, WA (2024) Acute effects of high-intensity interval training and moderate-intensity continuous training on left ventricular function in women with uncomplicated obesity. Sport Sciences for Health. ISSN 1824-7490

Text Acute effects of high-intensity interval training and moderate-intensity continuous training on left ventricular function in women with uncomplicated obesity.pdf - Accepted Version Restricted to Repository staff only until 4 April 2025. Download (1MB)

Abstract

Purpose: Obesity is associated with subclinical impairments in cardiac function. Aerobic exercise has positive effects on cardiac-related parameters. However, different exercise intensities may elicit distinct acute responses, leading to chronic adaptations. Therefore, we aimed to investigate the acute effects of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on left ventricle (LV) function in women with uncomplicated obesity. Methods: Fifteen women performed a bout of HIIT (4 × 4-min at 85–95% of HRmax), MICT (41-min at 65–75% of HRmax), and control condition (CO) (30-min sitting at rest). Data were collected immediately before, and five (t5) and 35 (t35) minutes after the performance of each condition. Results: Significant decreases in global longitudinal strain (GLS) (p = 0.010; p = 0.002), LV ejection fraction (LVEF) (p = 0.017; p = 0.010), LV end-diastolic volume (LVEDV) (p = 0.001; p = 0.048), stroke volume (SV) (p < 0.001; p = 0.013), early diastolic inflow velocity (E) (p = 0.001; p = 0.003) and E/A ratio (p = 0.001; p < 0.001) were observed for HIIT at t5 in relation to baseline and CO, respectively. However, GLS, LVEF, LVEDV, and E wave were reestablished near baseline values at t35. LV end-systolic volume decreased after HIIT in comparison to baseline at t5 (p = 0.050). GLS and E/A ratio decreased following HIIT at t5 compared to MICT (p = 0.013 and p = 0.027, respectively). Conclusion: A single bout of HIIT promoted transient reductions in LV function that were almost completely reestablished near baseline values 35 min after exercise cessation, not implying, therefore, any risk to HIIT performance by this population. Trial registration number: RBR-3v3dqf (Registered on 07/05/2019).

Item Type:	Article
Additional Information:	This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://doi.org/10.1007/s11332-024-01193-w
Uncontrolled Keywords:	1106 Human Movement and Sports Sciences
Subjects:	R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions:	Sport & Exercise Sciences
Publisher:	Springer
SWORD Depositor:	A Symplectic
Date Deposited:	27 Jun 2024 14:28
Last Modified:	27 Jun 2024 14:28
DOI or ID number:	10.1007/s11332-024-01193-w
URI:	https://researchonline.ljmu.ac.uk/id/eprint/23654

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