The effects of exercise variation in muscle thickness, maximal strength and motivation in resistance trained men


Autoři: Eneko Baz-Valle aff001;  Brad J. Schoenfeld aff002;  Jon Torres-Unda aff003;  Jordan Santos-Concejero aff001;  Carlos Balsalobre-Fernández aff004
Působiště autorů: Department of Physical Education and Sport, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain aff001;  Health Sciences Department, Bronx, NY, United States of America aff002;  Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain aff003;  Department of Physical Education, Sport and Human Movement, Autonomous Univerisity of Madrid, Madrid, Spain aff004
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
doi: 10.1371/journal.pone.0226989

Souhrn

Background

The objective of the present study was to compare the effects of a traditional resistance training program (fixed exercises and repetition ranges) to a resistance training program where exercises and repetition ranges were randomized on a session-by-session basis on markers of muscular adaptations and intrinsic motivation.

Methods

Twenty-one resistance trained men were randomized to perform an 8-week resistance training program using either a fixed exercise selection (CON) or having exercises randomly varied each session via a computerized app. Both groups performed 3 sets of 6 exercises, with training carried out 4 times per week.

Results

Both conditions promoted large, statistically significant increases in the bench press and back-squat 1 repetition maximum without differences between groups. Muscle thickness (MT) measures for the individual quadriceps showed large, statistically significant increases in of the vastus lateralis and rectus femoris for both conditions, with no observed between-group differences. Although no between-group in MT were noted for the vastus intermedius, only the CON displayed significant increases from baseline. Participants in EXP showed a significant, moderate improvement in the intrinsic motivation to training, while participants in the CON group presented non-significant decreases in this variable.

Conclusions

Varying exercise selection had a positive effect on enhancing motivation to train in resistance-trained men, while eliciting similar improvements in muscular adaptations.

Klíčová slova:

Adipose tissue – Anthropometry – Exercise – Legs – Muscle analysis – Questionnaires – Strength training – Ultrasound imaging


Zdroje

1. Schoenfeld B, Grgic J. Evidence-Based Guidelines for Resistance Training Volume to Maximize Muscle Hypertrophy. Strength Cond J. 2017;40: 1. doi: 10.1519/SSC.0000000000000363

2. Folland JP, Williams AG. The Adaptations to Strength Training. Sport Med. 2007;37: 145–168.

3. Lopez P, Pinto RS, Radaelli R, Rech A, Grazioli R, Izquierdo M, et al. Benefits of resistance training in physically frail elderly: a systematic review. Aging Clin Exp Res. Springer International Publishing; 2017;0: 0. doi: 10.1007/s40520-017-0863-z 29188577

4. Ibañez J, Izquierdo M, Arguelles I, Forga L, Larrion JL, Garcia-Unciti M, et al. Twice-weekly progressive resistance training decreases abdominal fat and improves insulin sensitivity in older men with type 2 diabetes. Diabetes Care. United States; 2005;28: 662–667. doi: 10.2337/diacare.28.3.662 15735205

5. Suchomel TJ, Nimphius S, Stone MH. The Importance of Muscular Strength in Athletic Performance. Sport Med. 2016;46: 1419–1449. doi: 10.1007/s40279-016-0486-0 26838985

6. Kraemer WJ, Ratamess NA. Fundamentals of resistance training: progression and exercise prescription. Med Sci Sport Exerc. 2004;36: 574–688.

7. Baz-Valle E, Fontes-Villalba M, Santos-Concejero J. Total Number of Sets as a Training Volume Quantification Method for Muscle Hypertrophy. J Strength Cond Res. 2018; 1. doi: 10.1519/JSC.0000000000002776 30063555

8. Schoenfeld BJ, Wilson JM, Lowery RP, Krieger JW. Muscular adaptations in low- versus high-load resistance training: A meta-analysis. Eur J Sport Sci. 2014; 1–10. doi: 10.1080/17461391.2014.989922 25530577

9. Schoenfeld BJ, Grgic J, Ogborn D, Krieger JW. Strength and Hypertrophy Adaptations Between Low- vs. High-Load Resistance Training. J Strength Cond Res. 2017;31: 3508–3523. doi: 10.1519/JSC.0000000000002200 28834797

10. Clark C. Assessment of 4 weeks of P90x (r) training on muscular strength and endurance, anaerobic power, and body composition. Middle Tennessee State University. 2014.

11. Fonseca RM, Roschel H, Tricoli V, de Souza EO, Wilson JM, Laurentino GC, et al. Changes in Exercises Are More Effective Than in Loading Schemes to Improve Muscle Strength. J Strength Cond Res. 2014;28: 3085–3092. doi: 10.1519/JSC.0000000000000539 24832974

12. Rauch JT, Ugrinowitsch C, Barakat CI, Alvarez MR, Brummert DL, Aube DW, et al. Auto-regulated exercise selection training regimen produces small increases in lean body mass and maximal strength adaptations in strength-trained individuals. J Strength Cond Res. 2017; 1. doi: 10.1519/JSC.0000000000002272 29016481

13. Martín-Albo J, Núñez JL, Navarro JG. Validation of the Spanish version of the Situational Motivation Scale (EMSI) in the educational context. Span J Psychol. 2009; doi: 10.1017/S113874160000216X 19899680

14. Schoenfeld BJ, Ratamess NA, Peterson MD, Contreras B, Tiryaki-Sonmez G. Influence of Resistance Training Frequency on Muscular Adaptations in Well-Trained Men. J Strength Cond Res. 2015;29: 1821–1829. doi: 10.1519/JSC.0000000000000970 25932981

15. Schoenfeld B, Contreras B, Ogborn D, Galpin A, Krieger J, Sonmez G. Effects of Varied Versus Constant Loading Zones on Muscular Adaptations in Trained Men. Int J Sports Med. 2016;37: 442–447. doi: 10.1055/s-0035-1569369 27042999

16. Ogasawara R, Thiebaud RS, Loenneke JP, Loftin M, Abe T. Time course for arm and chest muscle thickness changes following bench press training. Interv Med Appl Sci. 2012;4: 217–220. doi: 10.1556/IMAS.4.2012.4.7 24265879

17. Faulkner J. Physiology of swimming and diving. In: Falls H, editor. Human exercise physiology. Baltimore, MD: Academic press; 1968. pp. 415–446.

18. Sperandei S, Vieira MC, Reis AC. Adherence to physical activity in an unsupervised setting: Explanatory variables for high attrition rates among fitness center members. J Sci Med Sport. 2016;19: 916–920. doi: 10.1016/j.jsams.2015.12.522 26874647

19. Van Roie E, Bautmans I, Coudyzer W, Boen F, Delecluse C. Low- and High-Resistance Exercise: Long-Term Adherence and Motivation among Older Adults. Gerontology. 2015;61: 551–560. doi: 10.1159/000381473 25997778

20. Marcos-Pardo PJ, Martínez-Rodríguez A, Gil-Arias A. Impact of a motivational resistance-training programme on adherence and body composition in the elderly. Sci Rep. 2018;8: 1370. doi: 10.1038/s41598-018-19764-6 29358716

21. Earp JE, Newton RU, Cormie P, Blazevich AJ. Inhomogeneous Quadriceps Femoris Hypertrophy in Response to Strength and Power Training. Med Sci Sport Exerc. 2015;47: 2389–2397. doi: 10.1249/MSS.0000000000000669 25811947


Článek vyšel v časopise

PLOS One


2019 Číslo 12