Impact of a 20-Week Resistance Training Program on the Force–Velocity Profile in Novice Lifters Using Isokinetic Two-Point Testing
<b>Objectives</b>: This study aimed to assess the impact of a 20-week resistance training program on force–velocity (F-V) parameters using an isokinetic two-point method and comparing one-repetition maximum (1-RM) methods in novice lifters. <b>Methods</b>: Previously untraine...
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MDPI AG
2024-11-01
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| Series: | Journal of Functional Morphology and Kinesiology |
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| Online Access: | https://www.mdpi.com/2411-5142/9/4/222 |
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| author | Joffrey Drigny Nicolas Pamart Hélène Azambourg Marion Remilly Emmanuel Reboursière Antoine Gauthier Amir Hodzic |
| author_facet | Joffrey Drigny Nicolas Pamart Hélène Azambourg Marion Remilly Emmanuel Reboursière Antoine Gauthier Amir Hodzic |
| author_sort | Joffrey Drigny |
| collection | DOAJ |
| description | <b>Objectives</b>: This study aimed to assess the impact of a 20-week resistance training program on force–velocity (F-V) parameters using an isokinetic two-point method and comparing one-repetition maximum (1-RM) methods in novice lifters. <b>Methods</b>: Previously untrained individuals completed a supervised, three-session weekly resistance training program involving concentric, eccentric, and isometric phases, repeated every 2 to 4 weeks. Isokinetic dynamometry measured the strength of elbow flexors/extensors at 60°/s and 150°/s, and knee flexors/extensors at 60°/s and 240°/s at Baseline, 3 months, and 5 months. F-V parameters, including maximal theoretical force (F0) and the F-V slope, were calculated. Participants also performed 1-RM tests for the upper and lower limbs. Repeated measures ANOVA with effect size (η<sup>2</sup> > 0.14 as large) was used to analyze changes in F-V parameters and repeated measures correlation was used to test their association with 1-RM outcomes. <b>Results</b>: Eighteen male participants (22.0 ± 3.4 years) were analyzed. F0 significantly increased for all muscle groups (η<sup>2</sup> = 0.423 to 0.883) except elbow flexors. F-V slope significantly decreased (steeper) for knee extensors and flexors (η<sup>2</sup> = 0.348 to 0.695). Knee extensors showed greater F0 gains and steeper F-V slopes than flexors (η<sup>2</sup> = 0.398 to 0.686). F0 gains were associated with 1-RM changes (r = 0.38 to 0.83), while F-V slope changes correlated only with lower limb 1-RM (r = −0.37 to −0.68). <b>Conclusions</b>: The 20-week resistance training program significantly increased F0 and shifted the F-V profile towards a more “force-oriented” state in knee muscles. These changes correlated with improved 1-RM performance. Future studies should include longer follow-ups and control groups. |
| format | Article |
| id | doaj-art-4e2e8ffa914c452e888bd402d7dac9fe |
| institution | Kabale University |
| issn | 2411-5142 |
| language | English |
| publishDate | 2024-11-01 |
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| series | Journal of Functional Morphology and Kinesiology |
| spelling | doaj-art-4e2e8ffa914c452e888bd402d7dac9fe2024-12-27T14:32:18ZengMDPI AGJournal of Functional Morphology and Kinesiology2411-51422024-11-019422210.3390/jfmk9040222Impact of a 20-Week Resistance Training Program on the Force–Velocity Profile in Novice Lifters Using Isokinetic Two-Point TestingJoffrey Drigny0Nicolas Pamart1Hélène Azambourg2Marion Remilly3Emmanuel Reboursière4Antoine Gauthier5Amir Hodzic6Department of Sports Medicine and Physical Medicine and Rehabilitation, CHU de Caen Normandie, Normandie Univ, UFR Santé, GIP Cyceron, INSERM Comete, 14000 Caen, FranceInter-University Laboratory of Human Movement Science (LIBM EA7424), University of Lyon, University Jean Monnet, 42100 Saint-Etienne, FranceDepartment of Sports Medicine, Normandie Univ, UFR Santé, UNICAEN, CHU de Caen Normandie, 14000 Caen, FranceDepartment of Sports Medicine, Normandie Univ, UFR Santé, UNICAEN, CHU de Caen Normandie, 14000 Caen, FranceDepartment of Sports Medicine, Normandie Univ, UFR Santé, UNICAEN, CHU de Caen Normandie, 14000 Caen, FranceNormandie Univ, UFR Santé, GIP Cyceron, INSERM Comete, 14000 Caen, FranceDepartment of Cardiology and Sports Medicine, Normandie Univ, UFR Santé, UNICAEN, CHU de Caen Normandie, INSERM Comete, GIP Cyceron, 14000 Caen, France<b>Objectives</b>: This study aimed to assess the impact of a 20-week resistance training program on force–velocity (F-V) parameters using an isokinetic two-point method and comparing one-repetition maximum (1-RM) methods in novice lifters. <b>Methods</b>: Previously untrained individuals completed a supervised, three-session weekly resistance training program involving concentric, eccentric, and isometric phases, repeated every 2 to 4 weeks. Isokinetic dynamometry measured the strength of elbow flexors/extensors at 60°/s and 150°/s, and knee flexors/extensors at 60°/s and 240°/s at Baseline, 3 months, and 5 months. F-V parameters, including maximal theoretical force (F0) and the F-V slope, were calculated. Participants also performed 1-RM tests for the upper and lower limbs. Repeated measures ANOVA with effect size (η<sup>2</sup> > 0.14 as large) was used to analyze changes in F-V parameters and repeated measures correlation was used to test their association with 1-RM outcomes. <b>Results</b>: Eighteen male participants (22.0 ± 3.4 years) were analyzed. F0 significantly increased for all muscle groups (η<sup>2</sup> = 0.423 to 0.883) except elbow flexors. F-V slope significantly decreased (steeper) for knee extensors and flexors (η<sup>2</sup> = 0.348 to 0.695). Knee extensors showed greater F0 gains and steeper F-V slopes than flexors (η<sup>2</sup> = 0.398 to 0.686). F0 gains were associated with 1-RM changes (r = 0.38 to 0.83), while F-V slope changes correlated only with lower limb 1-RM (r = −0.37 to −0.68). <b>Conclusions</b>: The 20-week resistance training program significantly increased F0 and shifted the F-V profile towards a more “force-oriented” state in knee muscles. These changes correlated with improved 1-RM performance. Future studies should include longer follow-ups and control groups.https://www.mdpi.com/2411-5142/9/4/222exercise physiologyisokineticmuscle functionphysical performancestrength training |
| spellingShingle | Joffrey Drigny Nicolas Pamart Hélène Azambourg Marion Remilly Emmanuel Reboursière Antoine Gauthier Amir Hodzic Impact of a 20-Week Resistance Training Program on the Force–Velocity Profile in Novice Lifters Using Isokinetic Two-Point Testing Journal of Functional Morphology and Kinesiology exercise physiology isokinetic muscle function physical performance strength training |
| title | Impact of a 20-Week Resistance Training Program on the Force–Velocity Profile in Novice Lifters Using Isokinetic Two-Point Testing |
| title_full | Impact of a 20-Week Resistance Training Program on the Force–Velocity Profile in Novice Lifters Using Isokinetic Two-Point Testing |
| title_fullStr | Impact of a 20-Week Resistance Training Program on the Force–Velocity Profile in Novice Lifters Using Isokinetic Two-Point Testing |
| title_full_unstemmed | Impact of a 20-Week Resistance Training Program on the Force–Velocity Profile in Novice Lifters Using Isokinetic Two-Point Testing |
| title_short | Impact of a 20-Week Resistance Training Program on the Force–Velocity Profile in Novice Lifters Using Isokinetic Two-Point Testing |
| title_sort | impact of a 20 week resistance training program on the force velocity profile in novice lifters using isokinetic two point testing |
| topic | exercise physiology isokinetic muscle function physical performance strength training |
| url | https://www.mdpi.com/2411-5142/9/4/222 |
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