Bilateral and unilateral load-velocity profiling in a machine-based, single-joint, lower body exercise
Autoři:
Carlos Balsalobre-Fernández aff001; Mario Cardiel-García aff002; Sergio L. Jiménez aff002
Působiště autorů:
Department of Physical Education, Sport and Human Movement, Autonomous Univerisity of Madrid, Madrid, Spain
aff001; School of Sports Science, European University of Madrid, Madrid, Spain
aff002
Vyšlo v časopise:
PLoS ONE 14(9)
Kategorie:
Research Article
doi:
https://doi.org/10.1371/journal.pone.0222632
Souhrn
Background
To analyze the goodness of fit of the load-velocity relationship in a machine-based, single-joint exercise performed both in a bilateral and unilateral manner, as well as to study its accuracy to estimate one repetition maximum (1-RM).
Methods
Fifteen resistance trained males performed an incremental test in the bilateral and unilateral leg extension exercise up to the 1-RM in two separate occasions. Mean vertical velocity of the weight plates in the leg extension machine was measured for every repetition using a smartphone application (My Lift).
Results
Linear regression analyses showed a high goodness of fit (R2 > 0.93) and small standard errors of estimate (SEE < 5%1-RM) both in the bilateral and unilateral leg extension when individual load-velocity regressions for each participant were computed. Unilateral load-velocity relationships showed significant differences in the intercept of the regression line with the Y-axis and the velocity at each percentage of the 1-RM (Cohen’s d > 1.0, p< 0.05). Finally, non-significant differences were observed between actual and estimated 1-RM from the load-velocity relationships (r = 0.88.0–96, Cohen’s d < 0.2, p> 0.05).
Conclusions
This proof of concept highlights that computing load-velocity relationships in a machine-based, single-joint, angular exercise can be appropriately performed by measuring the mean vertical velocity of the weight plates. These results could help strength and conditioning researchers and coaches who wish to analyze load-velocity relationship in other common machine-based exercises.
Klíčová slova:
Biology and life sciences – Anatomy – Musculoskeletal system – Body limbs – Legs – Knees – Sports science – Sports and exercise medicine – Exercise – Strength training – Medicine and health sciences – Public and occupational health – Physical activity – Physical fitness – Engineering and technology – Equipment – Communication equipment – Cell phones – Physical sciences – Physics – Classical mechanics – Motion – Velocity – Mathematics – Statistics – Linear regression analysis – Research and analysis methods – Mathematical and statistical techniques – Statistical methods – Regression analysis
Zdroje
1. González-Badillo JJ, Sánchez-Medina L. Movement Velocity as a Measure of Loading Intensity in Resistance Training. Int J Sports Med. 2010;31: 347–352. doi: 10.1055/s-0030-1248333 20180176
2. Balsalobre-Fernández C, Muñoz-López M, Marchante D, García-Ramos A. Repetitions in Reserve and Rate of Perceived Exertion Increase the Prediction Capabilities of the Load-Velocity Relationship. J Strength Cond Res. 2018; 1. doi: 10.1519/JSC.0000000000002818 30312197
3. Pérez-Castilla A, Suzovic D, Domanovic A, Fernandes JFT, García-Ramos A. Validity of Different Velocity-Based Methods and Repetitions-to-Failure Equations for Predicting the 1 Repetition Maximum During 2 Upper-Body Pulling Exercises. J Strength Cond Res. 2019;Publish Ah: 1. doi: 10.1519/JSC.0000000000002968
4. Pareja-Blanco F, Rodríguez-Rosell D, Sánchez-Medina L, Sanchis-Moysi J, Dorado C, Mora-Custodio R, et al. Effects of velocity loss during resistance training on athletic performance, strength gains and muscle adaptations. Scand J Med Sci Sports. 2017;27: 724–735. doi: 10.1111/sms.12678 27038416
5. Conceição F, Fernandes J, Lewis M, Gonzaléz-Badillo JJ, Jimenéz-Reyes P. Movement velocity as a measure of exercise intensity in three lower limb exercises. J Sports Sci. 2016;34: 1099–1106. doi: 10.1080/02640414.2015.1090010 26395837
6. Balsalobre-Fernández C, García-Ramos A, Jiménez-Reyes P. Load–velocity profiling in the military press exercise: Effects of gender and training. Int J Sports Sci Coach. 2018;13: 743–750. doi: 10.1177/1747954117738243
7. García-Ramos A, Pérez-Castilla A, Villar Macias FJ, Latorre-Román PÁ, Párraga JA, García-Pinillos F. Differences in the one-repetition maximum and load-velocity profile between the flat and arched bench press in competitive powerlifters. Sport Biomech. 2018; 1–13. doi: 10.1080/14763141.2018.1544662 30526366
8. Dorrell HF, Smith MF, Gee TI. Comparison of Velocity-Based and Traditional Percentage-Based Loading Methods on Maximal Strength and Power Adaptations. J Strength Cond Res. 2019;Publish Ah. doi: 10.1519/JSC.0000000000003089 30946276
9. Banyard HG, Tufano JJ, Delgado J, Thompson SW, Nosaka K. Comparison of Velocity-Based and Traditional 1RM-Percent-Based Prescription on Acute Kinetic and Kinematic Variables. Int J Sports Physiol Perform. 2018; 1–28. doi: 10.1123/ijspp.2018-0147 30080424
10. Muñoz-López M, Marchante D, Cano-Ruiz MA, Chicharro JL, Balsalobre-Fernández C. Load-, Force-, and Power-Velocity Relationships in the Prone Pull-Up Exercise. Int J Sports Physiol Perform. 2017;12: 1249–1255. doi: 10.1123/ijspp.2016-0657 28253041
11. Ruf L, Chéry C, Taylor K. Validity and Reliability of The Load-Velocity Relationship to Predict The 1rm In Deadlift. J Strength Cond Res. Journal of Strength and Conditioning Research; 2017; 1. doi: 10.1519/JSC.0000000000002369
12. Balsalobre-Fernández C, Marchante D, Muñoz-López M, Jiménez SL. Validity and reliability of a novel iPhone app for the measurement of barbell velocity and 1RM on the bench-press exercise. J Sports Sci. 2018;36: 64–70. doi: 10.1080/02640414.2017.1280610 28097928
13. Iglesias-Soler E, Fariñas J, Mayo X, Santos L, Jaric S. Comparison of different regression models to fit the force–velocity relationship of a knee extension exercise. Sport Biomech. Routledge; 2019;18: 174–189. doi: 10.1080/14763141.2018.1442873 29558255
14. Bobbert MF. Why is the force-velocity relationship in leg press tasks quasi-linear rather than hyperbolic? [Internet]. Journal of Applied Physiology. 2012. pp. 1975–1983. doi: 10.1152/japplphysiol.00787.2011 22442026
15. Hernández-Preciado JA, Baz E, Balsalobre-Fernández C, Marchante D, Santos-Concejero J. Potentiation Effects of the French Contrast Method on the Vertical Jumping Ability. J Strength Cond Res. 2018; 1. doi: 10.1519/JSC.0000000000002437
16. García-Ramos A, Haff GG, Pestaña-Melero FL, Pérez-Castilla A, Rojas FJ, Balsalobre-Fernández C, et al. Feasibility of the 2-Point Method for Determining the 1-Repetition Maximum in the Bench Press Exercise. Int J Sports Physiol Perform. 2018;13: 474–481. doi: 10.1123/ijspp.2017-0374 28872384
17. Rhea MR. Determining the Magnitude of Treatment Effects in Strength Training Research Through the Use of the Effect Size. J Strength Cond Res. 2004;18: 918. doi: 10.1519/14403.1 15574101
18. Banyard HG, Nosaka K, Vernon AD, Haff GG. The Reliability of Individualized Load–Velocity Profiles. Int J Sports Physiol Perform. 2018;13: 763–769. doi: 10.1123/ijspp.2017-0610 29140148
19. Rejc E, Lazzer S, Antonutto G, Isola M, Di Prampero PE. Bilateral deficit and EMG activity during explosive lower limb contractions against different overloads. Eur J Appl Physiol. 2010;108: 157–165. doi: 10.1007/s00421-009-1199-y 19768464
20. Lake J, Naworynsky D, Duncan F, Jackson M. Comparison of Different Minimal Velocity Thresholds to Establish Deadlift One Repetition Maximum. Sports. 2017;5: 70. doi: 10.3390/sports5030070 29910430
21. Banyard HG, Nosaka K, Haff GG. Reliability and Validity of the Load-Velocity Relationship to Predict the 1RM Back Squat. J Strength Cond Res. 2016; 1. doi: 10.1519/JSC.0000000000001657
Článek vyšel v časopise
PLOS One
2019 Číslo 9
- Může hubnutí souviset s vyšším rizikem nádorových onemocnění?
- Polibek, který mi „vzal nohy“ aneb vzácný výskyt EBV u 70leté ženy – kazuistika
- AI může chirurgům poskytnout cenná data i zpětnou vazbu v reálném čase
- Antibiotika na nachlazení nezabírají! Jak můžeme zpomalit šíření rezistence?
- Metamizol jako analgetikum první volby: kdy, pro koho, jak a proč?
Nejčtenější v tomto čísle
- Graviola (Annona muricata) attenuates behavioural alterations and testicular oxidative stress induced by streptozotocin in diabetic rats
- CH(II), a cerebroprotein hydrolysate, exhibits potential neuro-protective effect on Alzheimer’s disease
- Comparison between Aptima Assays (Hologic) and the Allplex STI Essential Assay (Seegene) for the diagnosis of Sexually transmitted infections
- Assessment of glucose-6-phosphate dehydrogenase activity using CareStart G6PD rapid diagnostic test and associated genetic variants in Plasmodium vivax malaria endemic setting in Mauritania
Zvyšte si kvalifikaci online z pohodlí domova
Všechny kurzy