The Effect of Two Types of Concurrent Training on Vo2max, Maximal Strength and Body Fat Percentage in Young Men
محورهای موضوعی : Report of Health Care
1 - Department of Physical Education and Exercise Science, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
کلید واژه: Concurrent Training, Muscle Strength, Vo2max, Fat Percentage,
چکیده مقاله :
Introduction: The purpose of this study was to evaluate the effect of two types of concurrent training on Vo2max, maximal strength and body fat percentage in young men. Methods: 39 healthy young men were randomly divided into three equal number groups (13 subjects/group) including; endurance-resistance concurrent training (ERCT), resistance-endurance concurrent training (RECT) and control (CON). The subjects of ERCT and RECT groups performed endurance and resistance training with the same intensity and duration three times a week for eight weeks. The endurance training program included aerobic training on treadmill from 55 % of maximum heart rate (HRmax) and 25min in the first two weeks to 85% HRmax and 45 minutes in the last two weeks. The resistance training program included free weight training with 50% of 1-RM in first two week to 80% in last two week. The time of training in endurance component was the same as the resistance component of concurrent training. CON group did not participate in any exercise training and did daily routine activities. Estimated VO2max and upper and lower extremities maximal strength and body fat percentage was measured before and 72h after the last training session. Analysis of variance (ANOVA) with repeated measures test was used for statistical analysis. The significant level was set at 0.05 in all statistical analysis. Results: The study results showed a significant increase in VO2max, body fat percentage, lower and upper extremities maximal strength in both ERCT and RECT groups when compared to baseline values (p≤0.05). However, no significant difference was found between the ERCT and RECT groups in any of variables (P≤0.05). Conclusion: According to the results of this study, endurance training before resistance or vice versa during concurrent training did not have significant effect on aerobic power, maximal strength and body fat percentage of untrained healthy men.
1. MacNeil LG, Glover E, Bergstra TG, Safdar A, Tarnopolsky MA. The order of exercise during concurrent training for
rehabilitation does not alter acute genetic expression, mitochondrial enzyme activity or improvements in muscle function. PloS One. 2014; 9 (10): e109189.
2. Di Donato DM, West DW, Churchward- Venne TA, Breen L, Baker SK, Phillips SM. Influence of aerobic exercise intensity on myofibrillar and mitochondrial protein synthesis in young men during early and late postexercise recovery. Am J Physiol Endocrinol Metab. 2014; 306 (9): E1025- 1032.
3. Creer A, Gallagher P, Slivka D, Jemiolo B, Fink W, Trappe S. Influence of muscle glycogen availability on ERK1/2 and Akt signaling after resistance exercise in human skeletal muscle. J Appl Physiol. 2005; 99 (3): 950- 956.
4. Hawley JA. Molecular responses to strength and endurance training: are they incompatible?. Appl Physiol Nutr Metab. 2009; 34 (3): 355- 361.
5. Campbell EL, Seynnes OR, Bottinelli R, McPhee JS, Atherton PJ, Jones DA, et al. Skeletal muscle adaptations to physical inactivity and subsequent retraining in young men. Biogerontology. 2013; 14 (3): 247- 259.
6. Alkner BA, Tesch PA. Knee extensor and plantar flexor muscle size and function following 90 days of bed rest with or without resistance exercise. Eur J Appl Physiol. 2004; 93 (3): 294- 305.
7. Khademosharie M, Tadibi V, Behpoor N, Hamedinia MR. The effect of 12-weeks concurent training on the serum levels NGF, BDNF, and VDBP in women with multiple sclerosis. Int J Appl Exerc Physiol. 2017; 7 (1): 77- 86.
8. Allen J, Morelli V. Aging and exercise. Clin Geriatr Med. 2011; 27 (4): 661- 671.
9. Baumgartner RN, Wayne SJ, Waters DL, Janssen I, Gallagher D, Morley JE. Sarcopenic obesity predicts instrumental activities of daily living disability in the elderly. Obesity. 2004; 12 (12): 1995- 2004.
10. Izquierdo M, Hakkinen K, Ibanez J, Kraemer WJ, Gorostiaga EM. Effects of combined resistance and cardiovascular training on strength, power, muscle cross-sectional area, and endurance markers in middle-aged men. Eur J Appl Physiol. 2005; 94 (1- 2): 70- 75.
11. McCarthy JP, Agre JC, Graf BK, Pozniak MA, Vailas AC. Compatibility of adaptive responses with combining strength and endurance training. Med Sci Sports Exerc. 1995; 27 (3): 429- 436.
12. Kraemer WJ, Aguilera BA, Terada MI, Newton RU, Lynch JM, Rosendaal GO, et al. Responses of IGF-I to endogenous increases in growth hormone after heavy-resistance exercise. J Appl Physiol. 1995; 79 (4): 1310- 1315.
13. Häkkinen K, Alen M, Kraemer WJ, Gorostiaga E, Izquierdo M, Rusko H, et al. Neuromuscular adaptations during concurrent strength and endurance training versus strength training. Eur J Appl Physiol. 2003; 89 (1): 42- 52.
14. Hickson RC. Interference of strength development by simultaneously training for strength and endurance. Eur J Appl Physiol occupati physiol. 1980; 45 (2- 3): 255- 263.
15. Atherton PJ, Babraj J, Smith K, Singh J, Rennie MJ, Wackerhage H. Selective activation of AMPK- PGC-1α or PKB-
TSC2- mTOR signaling can explain specific adaptive responses to endurance or resistance training-like electrical muscle stimulation. FASEB J. 2005; 19 (7): 786- 788.
16. Wilson JM, Marin PJ, Rhea MR, Wilson SM, Loenneke JP, Anderson JC. Concurrent training: a meta-analysis examining interference of aerobic and resistance exercises. J Strength Cond Res. 2012; 26 (8): 2293- 2307.
17. Aagaard P, Andersen JL. Effects of strength training on endurance capacity in top‐level endurance athletes. Scand J Med Sci Sports. 2010; 20 (s2): 39- 47.
18. Jones TW, Howatson G, Russell M, French DN. Effects of strength and endurance exercise order on endocrine responses to concurrent training. Eur J Sport Sci. 2017; 17 (3): 326- 334.
19. Jackson AS, Pollock ML. Generalized equations for predicting body density of men. Br J Nutr. 1978; 40 (3): 497- 504.
20. Heyward V, Gibson A. Advanced fitness assessment and exercise prescription. 7th Edition ed. United State: Human Kinethic. 2014.
21. Eddens L, van Someren K, Howatson G. The role of intra-session exercise sequence in the interference effect: a systematic review with meta-analysis. Sports Med. 2017; 30: 1- 2.