Effects of a 20-Week High-Intensity Strength Training Program on Muscle Strength Gain and Cardiac Adaptation in Untrained Men: Preliminary Results of a Prospective Longitudinal Study
BackgroundAs strength sports gain popularity, there is a growing need to explore the impact of sustained strength training on cardiac biventricular structure and function, an area that has received less attention compared to the well-established physiological cardiac adaptati...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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JMIR Publications
2023-10-01
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| Series: | JMIR Formative Research |
| Online Access: | https://formative.jmir.org/2023/1/e47876 |
| _version_ | 1797652100431216640 |
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| author | Nicolas Pamart Joffrey Drigny Hélène Azambourg Marion Remilly Maxime Macquart Alexandre Lefèvre Kamal Lahjaily Jean Jacques Parienti Amélia Rocamora Henri Guermont Antoine Desvergée Pierre Ollitrault Francois Tournoux Eric Saloux Hervé Normand Emmanuel Reboursière Antoine Gauthier Amir Hodzic |
| author_facet | Nicolas Pamart Joffrey Drigny Hélène Azambourg Marion Remilly Maxime Macquart Alexandre Lefèvre Kamal Lahjaily Jean Jacques Parienti Amélia Rocamora Henri Guermont Antoine Desvergée Pierre Ollitrault Francois Tournoux Eric Saloux Hervé Normand Emmanuel Reboursière Antoine Gauthier Amir Hodzic |
| author_sort | Nicolas Pamart |
| collection | DOAJ |
| description |
BackgroundAs strength sports gain popularity, there is a growing need to explore the impact of sustained strength training on cardiac biventricular structure and function, an area that has received less attention compared to the well-established physiological cardiac adaptation to endurance training.
ObjectiveThis study aims to implement a 20-week high-intensity strength training program to enhance maximal muscle strength and evaluate its impact on cardiac biventricular adaptation in healthy, untrained men.
MethodsA total of 27 healthy and untrained young men (mean age 22.8, SD 3.2 years) participated in a strength training program designed to increase muscle strength. The training program involved concentric, eccentric, and isometric exercise phases, conducted over a consecutive 20-week time frame with a frequency of 3 weekly training sessions. Participants were evaluated before and after 12 and 20 weeks of training through body composition analysis (bioelectrical impedance), a 12-lead resting electrocardiogram, 3D transthoracic echocardiography, cardiopulmonary exercise testing, and muscle isokinetic dynamometry. The progression of strength training loads was guided by 1-repetition maximum (RM) testing during the training program.
ResultsOf the initial cohort, 22 participants completed the study protocol. No injuries were reported. The BMI (mean 69.8, SD 10.8 kg/m² vs mean 72, SD 11 kg/m²; P=.72) and the fat mass (mean 15.3%, SD 7.5% vs mean 16.5%, SD 7%; P=.87) remained unchanged after training. The strength training program led to significant gains in 1-RM exercise testing as early as 4 weeks into training for leg extension (mean 69.6, SD 17.7 kg vs mean 96.5, SD 31 kg; P<.001), leg curl (mean 43.2, SD 9.7 kg vs mean 52.8, SD 13.4 kg; P<.001), inclined press (mean 174.1, SD 41.1 kg vs mean 229.2, SD 50.4 kg; P<.001), butterfly (mean 26.3, SD 6.2 kg vs mean 32.5, SD 6.6 kg; P<.001), and curl biceps on desk (mean 22.9, SD 5.2 kg vs mean 29.6, SD 5.2 kg; P<.001). After 20 weeks, the 1-RM leg curl, bench press, pullover, butterfly, leg extension, curl biceps on desk, and inclined press showed significant mean percentage gains of +40%, +41.1%, +50.3%, +63.5%, +80.1%, +105%, and +106%, respectively (P<.001). Additionally, the isokinetic evaluation confirmed increases in maximal strength for the biceps (+9.2 Nm), triceps (+11.6 Nm), quadriceps (+46.8 Nm), and hamstrings (+25.3 Nm). In this paper, only the training and muscular aspects are presented; the cardiac analysis will be addressed separately.
ConclusionsThis study demonstrated that a short-term high-intensity strength training program was successful in achieving significant gains in muscle strength among previously untrained young men. We intend to use this protocol to gain a better understanding of the impact of high-intensity strength training on cardiac physiological remodeling, thereby providing new insights into the cardiac global response in strength athletes.
Trial RegistrationClinicalTrials.gov NCT04187170; https://clinicaltrials.gov/study/NCT04187170 |
| first_indexed | 2024-03-11T16:25:09Z |
| format | Article |
| id | doaj.art-6dbdf2658a5a4153bb034ba5a04487f3 |
| institution | Directory Open Access Journal |
| issn | 2561-326X |
| language | English |
| last_indexed | 2024-03-11T16:25:09Z |
| publishDate | 2023-10-01 |
| publisher | JMIR Publications |
| record_format | Article |
| series | JMIR Formative Research |
| spelling | doaj.art-6dbdf2658a5a4153bb034ba5a04487f32023-10-24T13:15:37ZengJMIR PublicationsJMIR Formative Research2561-326X2023-10-017e4787610.2196/47876Effects of a 20-Week High-Intensity Strength Training Program on Muscle Strength Gain and Cardiac Adaptation in Untrained Men: Preliminary Results of a Prospective Longitudinal StudyNicolas Pamarthttps://orcid.org/0000-0002-3971-5367Joffrey Drignyhttps://orcid.org/0000-0001-7670-8791Hélène Azambourghttps://orcid.org/0009-0000-8010-5475Marion Remillyhttps://orcid.org/0009-0007-0542-4362Maxime Macquarthttps://orcid.org/0009-0003-9518-2926Alexandre Lefèvrehttps://orcid.org/0009-0008-2914-7547Kamal Lahjailyhttps://orcid.org/0009-0005-6413-0685Jean Jacques Parientihttps://orcid.org/0000-0002-4774-5590Amélia Rocamorahttps://orcid.org/0009-0006-7574-2385Henri Guermonthttps://orcid.org/0009-0002-1578-201XAntoine Desvergéehttps://orcid.org/0000-0002-0400-7985Pierre Ollitraulthttps://orcid.org/0000-0002-2739-1967Francois Tournouxhttps://orcid.org/0000-0001-7945-0714Eric Salouxhttps://orcid.org/0000-0002-3817-9961Hervé Normandhttps://orcid.org/0000-0002-5738-4020Emmanuel Reboursièrehttps://orcid.org/0009-0001-9521-6909Antoine Gauthierhttps://orcid.org/0000-0001-6131-7093Amir Hodzichttps://orcid.org/0000-0001-8099-0654 BackgroundAs strength sports gain popularity, there is a growing need to explore the impact of sustained strength training on cardiac biventricular structure and function, an area that has received less attention compared to the well-established physiological cardiac adaptation to endurance training. ObjectiveThis study aims to implement a 20-week high-intensity strength training program to enhance maximal muscle strength and evaluate its impact on cardiac biventricular adaptation in healthy, untrained men. MethodsA total of 27 healthy and untrained young men (mean age 22.8, SD 3.2 years) participated in a strength training program designed to increase muscle strength. The training program involved concentric, eccentric, and isometric exercise phases, conducted over a consecutive 20-week time frame with a frequency of 3 weekly training sessions. Participants were evaluated before and after 12 and 20 weeks of training through body composition analysis (bioelectrical impedance), a 12-lead resting electrocardiogram, 3D transthoracic echocardiography, cardiopulmonary exercise testing, and muscle isokinetic dynamometry. The progression of strength training loads was guided by 1-repetition maximum (RM) testing during the training program. ResultsOf the initial cohort, 22 participants completed the study protocol. No injuries were reported. The BMI (mean 69.8, SD 10.8 kg/m² vs mean 72, SD 11 kg/m²; P=.72) and the fat mass (mean 15.3%, SD 7.5% vs mean 16.5%, SD 7%; P=.87) remained unchanged after training. The strength training program led to significant gains in 1-RM exercise testing as early as 4 weeks into training for leg extension (mean 69.6, SD 17.7 kg vs mean 96.5, SD 31 kg; P<.001), leg curl (mean 43.2, SD 9.7 kg vs mean 52.8, SD 13.4 kg; P<.001), inclined press (mean 174.1, SD 41.1 kg vs mean 229.2, SD 50.4 kg; P<.001), butterfly (mean 26.3, SD 6.2 kg vs mean 32.5, SD 6.6 kg; P<.001), and curl biceps on desk (mean 22.9, SD 5.2 kg vs mean 29.6, SD 5.2 kg; P<.001). After 20 weeks, the 1-RM leg curl, bench press, pullover, butterfly, leg extension, curl biceps on desk, and inclined press showed significant mean percentage gains of +40%, +41.1%, +50.3%, +63.5%, +80.1%, +105%, and +106%, respectively (P<.001). Additionally, the isokinetic evaluation confirmed increases in maximal strength for the biceps (+9.2 Nm), triceps (+11.6 Nm), quadriceps (+46.8 Nm), and hamstrings (+25.3 Nm). In this paper, only the training and muscular aspects are presented; the cardiac analysis will be addressed separately. ConclusionsThis study demonstrated that a short-term high-intensity strength training program was successful in achieving significant gains in muscle strength among previously untrained young men. We intend to use this protocol to gain a better understanding of the impact of high-intensity strength training on cardiac physiological remodeling, thereby providing new insights into the cardiac global response in strength athletes. Trial RegistrationClinicalTrials.gov NCT04187170; https://clinicaltrials.gov/study/NCT04187170https://formative.jmir.org/2023/1/e47876 |
| spellingShingle | Nicolas Pamart Joffrey Drigny Hélène Azambourg Marion Remilly Maxime Macquart Alexandre Lefèvre Kamal Lahjaily Jean Jacques Parienti Amélia Rocamora Henri Guermont Antoine Desvergée Pierre Ollitrault Francois Tournoux Eric Saloux Hervé Normand Emmanuel Reboursière Antoine Gauthier Amir Hodzic Effects of a 20-Week High-Intensity Strength Training Program on Muscle Strength Gain and Cardiac Adaptation in Untrained Men: Preliminary Results of a Prospective Longitudinal Study JMIR Formative Research |
| title | Effects of a 20-Week High-Intensity Strength Training Program on Muscle Strength Gain and Cardiac Adaptation in Untrained Men: Preliminary Results of a Prospective Longitudinal Study |
| title_full | Effects of a 20-Week High-Intensity Strength Training Program on Muscle Strength Gain and Cardiac Adaptation in Untrained Men: Preliminary Results of a Prospective Longitudinal Study |
| title_fullStr | Effects of a 20-Week High-Intensity Strength Training Program on Muscle Strength Gain and Cardiac Adaptation in Untrained Men: Preliminary Results of a Prospective Longitudinal Study |
| title_full_unstemmed | Effects of a 20-Week High-Intensity Strength Training Program on Muscle Strength Gain and Cardiac Adaptation in Untrained Men: Preliminary Results of a Prospective Longitudinal Study |
| title_short | Effects of a 20-Week High-Intensity Strength Training Program on Muscle Strength Gain and Cardiac Adaptation in Untrained Men: Preliminary Results of a Prospective Longitudinal Study |
| title_sort | effects of a 20 week high intensity strength training program on muscle strength gain and cardiac adaptation in untrained men preliminary results of a prospective longitudinal study |
| url | https://formative.jmir.org/2023/1/e47876 |
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