عنوان مقاله [English]
Background and Purpose: The effectiveness of exercise training, whether in the sports for all or in the championships, is very important. The purpose of this study was to compare the effects of 8 weeks of training at the aerobic and anaerobic threshold intensities with equal total work and frequency on the cardiopulmonary parameters in non-athlete men.
Methodology: Twenty- tow untrained male university students volunteered to participate in this study and were divided randomly into two aerobic (N= 12; 61% HRmax) and anaerobic threshold (N= 9; 86% HRmax) groups. Pre and post the training, subjects performed a progressive exercise treadmill test for determine maximal oxygen consumption (VO2max), anaerobic threshold velocity (vAT) and Oxygen uptake at anaerobic threshold (VO2 at AT). Training program performed for 8 week and 3 sessions /week with the equal total work and oxygen consumption. The within groups as well as the between groups differences were evaluated by paired samples t-test and independent samples t-test respectively. The effect size was calculated for each significant difference by the means of the omega square method.
Results: Results of this study showed that after the training VO2 at AT and vAT were increased significantly in both exercising groups. Both groups had a marked decreased in resting HR and BP. Also, VO2max significantly increased in anaerobic threshold groups (P=0.009) while, There were no significant changes in VO2max in aerobic threshold group. Results of independent t-test showed that no significant differences between the two training program.
Conclusion: In conclusion, The results of this study demonstrate that When volume of exercise is controlled, higher intensity of exercise are more effective for improving VO2max than lower intensity of exercise in non- trained young men.
##Astrand P-O, Rodahl K. Textbook of work physiology: physiological bases of exercise. In: McGraw-Hill (New York); 1977.## Pollock ML. Submaximal andmaximal working capacity of elite distance runners. Part I: Cardiorespiratory aspects*. Annals of the New York Academy of Sciences 1977;301(1):310-322.##Wenger HA, Bell GJ. The interactions of intensity, frequency and duration of exercise training in altering cardiorespiratory fitness. Sports Medicine 1986;3(5):346-356.## Overend TJ, Paterson DH, Cunningham DA. The effect of interval and continuous training on the aerobic parameters. Canadian Journal of Sport Sciences= Journal Canadien Des Sciences Du Sport 1992;17(2):129-134.##Thomas TR, Adeniran SB, Etheridge GL. Effects of different running programs on VO2 max, percent fat, and plasma lipids. Canadian Journal of Applied Sport Sciences. Journal Canadien Des Sciences Appliquees Au Sport 1984;9(2):55-62.##Haskell WL, Lee IM, Pate RR, Powell KE, Blair SN, Franklin BA, et al. Physical activity and public health: updated recommendation for adults from the American College of Sports Medicine and the American Heart Association. Circulation 2007;116(9):1081.## Esfarjani F, Laursen PB. Manipulating high-intensity interval training: Effects on, the lactatethreshold and 3000m running performance in moderately trained males. Journal of Science and Medicine in Sport 2007;10(1):27-35.## Helgerud J, Hoydal K, Wang E, Karlsen T, Berg P, Bjerkaas M, et al. Aerobic High-Intensity Intervals Improve VO2 max More Than Moderate Training. Medicine and Science in Sports and Exercise 2007;39(4):665.## Gormley SE, Swain DP, High R, Spina RJ, Dowling EA, Kotipalli US, et al. Effect of Intensity of Aerobic Training on VO2max. Medicine and Science in Sports and Exercise 2008; 40(7):1336.## Loimaala A, Huikuri H, Oja P, Pasanen M, Vuori I. Controlled 5-mo aerobic training improves heart rate but not heart rate variability or baroreflex sensitivity. Journal of Applied Physiology 2000;89(5):1825-1829.## Braith RW, PollockML, Lowenthal DT, Graves JE, Limacher MC. Moderate-and high-intensity exercise lowers blood pressure in normotensive subjects 60 to 79 years of age. The American Journal of Cardiology 1994;73(15):1124-1128.## Gossard D, Haskell WL, Taylor CB, Mueller JK, Rogers F, Chandler M, et al. Effects of low-and high-intensity home-based exercise training on functional capacity in healthy middle-aged men. The American Journal of Cardiology 1986;57(6):446-449.##Heck H, Mader A, Hess G, Micke S, Miller R, Hollmann W. Justification of the 4-mmol/l lactate threshold. International Journal of Sports Medicine 1985;6(3):117.##Tashiro E, Miura S, Koga M, Sasaguri M, Ideishi M, Ikeda M, et al. Crossover comparson between the depressor effects of low and high work rate exercise in mild hyper tension. Clinical and Experimental Pharmacology and Physiology 1993;20(11):689-696.##Nemoto K-i, Gen-no H, Masuki S, Okazaki K, Nose H. Effects of high-intensity interval walking training on physical fitness and blood pressurein middle-aged and older people. In: Mayo Clinic Proceedings; 2007: Elsevier; 2007. p. 803-811.## Davis JA. Anaerobic threshold: review of the concept and directions for future research. Medicine and Science in Sports and Exercise 1985;17(1):6-21.## Edwards AM, Clark N, Macfadyen AM. Lactate and ventilatory thresholds reflect the training status of professional soccer players where maximum aerobic power is unchanged. Journal of Sports Science &Medicine 2003;2(1):23.##Coyle EF. Integration of thephysiological factors determining endurance performance ability. Exercise and Sport Sciences Reviews 1994;23:25-63.##Siahkouhian M, Khodadadi D. Narita Target Heart Rate Equation Underestimates the Predicted Adequate Exercise Level in Sedentary Young Boys. Asian Journal of Sports Medicine 2013;4(3):175.##Simonton CA, Higginbotham MB, Cobb FR. The ventilatory threshold: quantitative analysis of reproducibility and relation to arterial lactate concentration in normal subjects and in patients with chronic congestive heart failure. The American Journal of Cardiology 1988;62(1):100-107.##Skinner JS, McLellan TH. The transition from aerobic to anaerobic metabolism. Research Quarterly for Exercise and Sport 1980;51(1):234-248.##Siahkouhian M, AzizanS, Roohi BN. A new approach for the determination of anaerobic threshold: Methodological Survey on the Modified Dmax Method. 2012.##Peake J, Wilson G, Hordern M, Suzuki K, Yamaya K, Nosaka K, et al. Changes in neutrophil surface receptor expression, degranulation, and respiratory burst activity after moderate-and high-intensity exercise. Journal of Applied Physiology 2004;97(2):612-618.##Acevedo EO, Goldfarb AH. Increased training intensity effects on plasma lactate, ventilatory threshold, and endurance. Medicine and Science in Sports and Exercise 1989;21(5):563-568.##Burgomaster KA, Hughes SC, Heigenhauser GJF, Bradwell SN, Gibala MJ. Six sessions of sprint interval training increases muscle oxidative potential and cycle endurance capacity in humans. Journal of Applied Physiology 2005;98(6):1985-1990.##Kim J, Lee N, Trilk J, Kim Ej, Kim Sy, Lee M, et al. Effects of sprint interval training on elite judoists. International Journal of Sports Medicine 2011;32(12):929-934.##Loprinzi PD, Brodowicz GR. Physiological adaptations and analysis of training content in high school cross-country runners. Research in Sports Medicine 2008;16(3):189-202.##Cheramie WM. Effects of Aerobic and Anaerobic Training Protocols on 4000m Track Cycling Time Trial: Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Master of Science in The Department of Kinesiology by William Mathieu Cheramie BS, Louisiana State University 2004;## Helgerud J, Engen LC, Wisloff U, Hoff J. Aerobic endurance training improves soccer performance. Medicine and Science in Sports and Exercise 2001;33(11):1925-1931.##Laursen PB, Blanchard MA, Jenkins DG. Acute high-intensity interval trainingimproves Tvent and peak power output in highly trained males. Canadian Journal of Applied Physiology 2002;27(4):336-348.##Laursen PB, Shing CM, Peake JM, Coombes JS, Jenkins DG. Influence of high-intensity interval training on adaptations in well-trained cyclists. The Journal of Strength & Conditioning Research 2005;19(3):527-533.##Wasserman K. Determinants and detection of anaerobic threshold and consequences of exercise above it. Circulation 1987;76(6 Pt 2):VI29-39.##Davis JA, Frank MH, WhippBJ, Wasserman K. Anaerobic threshold alterations caused by endurance training in middle-aged men. Journal of Applied Physiology: Respiratory, Environmental and Exercise physiology 1979;46(6):1039-1046.## Ready AE, Quinney HA. Alterations in anaerobic threshold as the result of endurance training and detraining. Medicine and Science in Sports and Exercise 1981;14(4):292-296.##Ivy JL, Withers RT, Van Handel PJ, Elger DH, Costill DL. Muscle respiratory capacity and fiber type as determinants of the lactate threshold. Journal of Applied Physiology 1980;48(3):523-527.##Saltin B, Gollnick PD. Skeletal muscle adaptability: significance for metabolism and performance. Comprehensive Physiology 1982.##McNicol AJ, Oa Brien BJ, Paton CD, Knez WL. The effects of increasedabsolute training intensity on adaptations to endurance exercise training. Journal of Science and Medicine in Sport 2009;12(4):485-489.## Billat V, Lepretre P-M, Heugas A-M, Laurence M-H, Salim D, Koralsztein JP. Training and bioenergetic characteristics in elite male and female Kenyan runners. Medicine and Science in Sports and Exercise 2003;35(2):297-304.##Enoksen E, Shalfawi SAI, Tannessen E. The effect of high-vs. low-intensity training on aerobic capacity in well-trained male middle-distance runners. The Journal of Strength & Conditioning Research 2011;25(3):812-818.##Tanaka K, Watanabe H, Konishi Y, Mitsuzono R, Sumida S, Tanaka S, et al. Longitudinal associations between anaerobic threshold and distance running performance. European Journal of Applied Physiology and Occupational Physiology 1986;55(3):248-252.##Larsen HB. Kenyan dominance in distance running. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 2003;136(1):161-170.##Leutholtz BC, Keyser RE, Heusner WW, Wendt VE, Rosen L. Exercise training and severe caloric restriction: effect on lean body mass in the obese. Archives of Physical Medicine and Rehabilitation 1995;76(1):65-70.##Asikainen T, Miilunpalo S, Kukkonena Harjula K, Nenonen A, Pasanen M, Rinne M, et al. Walking trials in postmenopausal women: effect of low doses of exercise and exercise fractionization on coronary risk factors. Scandinavian Journal of Medicine &Science in Sports 2003;13(5):284-292.##Kang H-Sk, Gutin B, Barbeau P, Owens S, Lemmon CsaR, Allison J, et al. Physical training improves insulin resistance syndrome markers in obese adolescents. Medicine and Science in Sports and Exercise 2002;34(12):1920-1927.##Cornelissen VA, Fagard RH. Effects of endurance training on blood pressure, blood pressurea regulating mechanisms, and cardiovascular risk factors. Hypertension 2005;46(4):667-675.##Higashi Y, Sasaki S, Kurisu S, Yoshimizu A, Sasaki N, Matsuura H, et al. Regular aerobic exercise augments endothelium-dependent vascular relaxation in normotensive as well as hypertensive subjects role of endothelium-derived nitric oxide. Circulation 1999;100(11):1194-1202.##Aubert AE, Beckers F, Ramaekers D. Short-term heart rate variability in young athletes. Journal of Cardiology 2000;37:85-88.##Chacon-Mikahil MPT, Forti VAM, Catai AM, Szrajer JS, Golfetti R, Martins LEB, et al. Cardiorespiratory adaptations induced by aerobic training in middle-aged men: the importance of a decrease in sympathetic stimulation for the contribution of dynamic exercise tachycardia. Brazilian Journal of Medical and Biological Research 1998;31(5):705-712.##Spalding TW, Jeffers LS, Porges SW, Hatfield BD. Vagal and cardiac reactivity to psychological stressors in trained and untrainedmen. Medicine & Science in Sports & Exercise 2000.##