Physiological Responses to Fixed Lactate Concentrations in Young Soccer Players: Comparision of Playing Positions

Abstract

The purpose of this study was to investigate the role of passion in predicting job and life satisfaction in fitness leaders and examine the sex and job experience differences in these variables. Two hundred (Mage=29.52+-4.38) fitness leaders participated in this study. “Passion Scale” (Vallerand et al., 2003), “Satisfaction with Life Scale” (Diener et al., 1985), and “Minnesota Job Satisfaction Questionnaire” (Weiss et al., 1967) were administered to participants. Stepwise Multiple Regression Analysis was used to determine whether fitness leaders’ levels of passion predict their job and life satisfaction. 2x2 (sex x year of job experience) Multivariate Analysis of Variance (MANOVA) was used to test the sex and year of job experience differences in passion and job satisfaction. Furthermore, 2x2 ANOVA was conducted to test sex and year of job experiences differences in life satisfaction. Results of Regression Analysis indicated that obsessive passion was a significant predictor of extrinsic job satisfaction; both harmonious and obsessive passion were a significant predictor of intrinsic job satisfaction, general job satisfaction and life satisfaction of fitness leaders (p<.01). The MANOVA results showed that participants’ passion scores differed with regard to year of job experiences (p<.05), but there were table Oxygen Analyzer (Cosmed K4b2, Italy) for each minute, and [La] was measured for every 3 minutes by taking arterialized blood from earlobe (YSI 1500, USA). RV, VO2 and HR corresponding to the fixed [La] were predicted from RV-[La], RV-HR and RV-VO2 , which were measured from VO2max and LT tests, by using polynomial curves and equations. As a result of multivariate of variance analysis, although VO2max and RV of midfielders corresponding to fixed [LA] were higher than the others, no significant differences were found on RV, percentage of VO2max and HR at the fixed [La] among the playing positions. As a result of the study, examined aerobic endurance characteristics of young soccer players showed similar physiological responses among the playing positions.

Keywords

• Soccer; Maximal Oxygen Consumption; Heart rate; Fixed lactate threshold

Genç Futbolcularda Sabit Laktat Konsantrasyonlarına Verilen Fizyolojik Cevaplar: Mevkiler Arası Karşılaştırma

Abstract

Bu çalışmanın amacı, genç futbolcularda sabit laktat konsantrasyonlarına ([La]; 1.5, 2.0, 2.5, 3.0, 3.5, 4.0 ve 5.0 mM.L-1) karşılık gelen koşu hızı (KH), kalp atım hızı (KAH) ve maksimum oksijen tüketiminin (VO2maks) kullanılan yüzdesi (%VO2maks)’ni mevkilere göre karşılaştırılmasıdır. Bu amaçla; 49 futbolcu (17 defans, 20 orta saha ve 12 forvet) çalışmaya gönüllü olarak katılmıştır. (Yaş:17.1+-0.7 yıl, Kilo: 68.6+-7.3 kg, Boy: 175.6+-5.8 cm). VO2maks ve laktat eşikleri testi (LT), futbol sahasında Modifiye Mekik Koşusu testi protokolüne uygun olarak denekler tükenene kadar yaptırılmıştır. Testler sırasında portatif O2 analizörü (Cosmed K4b2, Italy) ile VO2 ve KAH, her üç dakikada ise bir kulak memesinden alınan arteriyal kandan [La] ölçülmüştür (YSI 1500, USA). Sabit [La] karşılık gelen KH, VO2 ve KAH; VO- 2maks ve LT testinden elde edilen KH-[La], KH-KAH ve KH-VO2 grafiklerinden polinom eğriler ve denklemler yardımıyla belirlenmiştir. Yapılan MANOVA sonuçlarına göre, VO2maks ve sabit [La] karşılık gelen KH orta saha oyuncularında diğer mevkilere göre daha yüksek değerlere sahipken, bu fark istatistiksel olarak anlamlı değildir (p>0.05). Sonuç olarak; incelenen aerobik dayanıklılık özellikleri, genç futbolcularda mevkiler arasında elde edilen fizyolojik cevapların benzer olduğu ortaya çıkmıştır.

Keywords

• Futbol; Maksimum Oksijen Tüketimi; Kalp atım hızı; Sabit laktat eşikleri

References

1. Açıkada C, Ergen E, Alpar R, Sarpyener K. (1991). Erkek sporcularda vücut kompozisyonu parametrelerinin incelenmesi. Spor Bilimleri Dergisi, 2(3), 27-41.
2. Ali A, Farrally M. (1991). Recording soccer players’ heart rate during matches. Journal of Sports Sciences, 9, 183-189.
3. Allen WK, Seals DR, Hurley BF, Ehsani AA, Hagberg JM. (1985). Lactate threshold and distance-running performance in young and older endurance athletes. Journal of Applied Physiology, 58, 1281- 4.
4. Bangsbo J, Norregaard L, Thorsoe F. (1991). Activity profile of competition soccer. Canadian Journal of Sports Science, 16, 110 – 116.
5. Bangsbo J. (1994). The physiology of soccer – with special reference to intense intermittent exercsise. Acta Physiologica Scandinavica, 15, (suppl. 619), 1- 156.
6. Bangsbo J, Michalsik, L. (2000). Assessment of the physiological capacity of elite soccer players. In W. Spinks, (Eds.) T. Reilly, A. Murphy, Science and Football IV (pp. 53 – 62). London: Routledge.
7. Bangsbo J, Mohr M. (2005). Variations in running speed and recovery time after a sprint during top-class soccer matches. Medicine and Science in Sports and Exercise, 37, 87-95.
8. Bangsbo J, Mohr M, Krustrup P. (2006). Physical and metabolic demands of training and match-play in the elite football player. Journal of Sports Sciences, 24(7), 665-674.

9. Billat VL, Slawinski J, Bocquet V, Demarle A, Lafitte L, Chassaign P, Koralsztein JP. (2000). Intermittent runs at the velocity associated with maximal oxygen uptake enables subjects to remain at maksimal oxygen uptake for a longer time than intense but submaximal runs. Europen Journal of Applied Physiology, 81, 188-96.
10. Bouleay RM, Simoneau JA, Lortie G, Bouchard C. (1997). Monitoring high-intensity endurance exercise with heart rate and thresholds. Medicine and Science in Sports and Exercise, 29(1), 125-32.
11. Callaway WC, Chumlea WC, Bouchard C, John HH, Lohman TG. (1988). Circumferences. In.T.G.Lohman,A.F.Roche, R.Martorell (Eds). Anthropometric Standartization Referance Manuel. Champaign: Human Kinetics.
12. Casajus JA. (2001). Seasonal variation in fitness variables in professional soccer players. Journal of Sports Medicine and Physical Fitness, 41, 463 – 467.
13. Castagna C, D’Ottavio S, Abt G. (2003). Activity profile of young soccer players during actual match play. Journal of Strength and Conditioning Research, 17(4), 775–780.
14. Castagna C, Belardinelli R, Abt G. (2005). The VO2 and HR response to training with the ball in youth soccer players. In T. Reilly, J. Cabri,D. Arau´ jo (Eds.), Science and Football V (pp. 462 – 464). London/New York: Routledge, Taylor & Francis Group.
15. Chamari K, Kaouech F, Jeddi R, Moussa-Chamari I, Wisloff U. (2005). Endurance training and testing with the ball in young elite soccer players. British Journal of Sports Medicine, 39, 24–28.
16. Costill DL, Thomason H, Robert E. (1973). Fractional utilization of the aerobic capacity during distance running. Medicine and Science in Sports and Exercise, 5, 248-52.
17. Deprez D, Fransen J, Boone J, Lenoir M, Philippaerts R, Vaeyens R. (2015). Characteristics of high-level youth soccer players: variation by playing position. Journal of Sports Science, 33:3, 243-254.
18. Edwards AM, Clark N, Macfadyen AM. (2003). Lactate and ventilatory thresholds reflect the training status od professional soccer players where maximum aerobic power is unchanged. Journal of Sports Science and Medicine, 2, 23-29.
19. Eniseler N. (2005). Heart rate and blood lactate concentrations as predictors of physiological load on elite soccer players during various soccer training activities. Journal of Strength Conditioning Research, 19, 799-804.
20. Faina M, Gallozzi C, Lupo S, Colli R, Sassi R, Marini C. (1988). Definition and physiological profile of the soccer player. In: Science and Football. T. Reilly, A. Lees, K. Davids, and W. Murphy, eds. London: E. & F.N. Spon, pp. 158–163.
21. Farrel PA, Wilmore JH, Coyle EF, Billing JE, Costill DL. (1979). Plasma lactate accumulation and distance running performance. Medicine and Science in Sports and Exercise, 11(4), 338-44.
22. Gil SM, Gil J, Ruiz F, Irazusta A, Irazusta J. (2007). Physiological and anthropometric characteristics of young soccer players according to their playing position: relevance for the selection process. Journal of Strength Conditioning Research, 21, 438-445.
23. Guner R, Kunduracioglu B, Ulkar B. (2006). Running velocities and heart rates at fixed blood lactate concentrations in young soccer players. Advances in Theraphy, 23(3), 395-403.
24. Guner R, Kunduracioglu B, Ulkar B, Ergen E. (2005). Running velocities and heart rates at fixed blood lactate concentrations in elite soccer players. Advances in Theraphy, 22(6), 613-20.
25. Harrison GG, Buskirk ER, Carter JEL, Johnson FE, Pollock ML, ve diğ.. (1988). Skinfold thicknesses and measurement technique. In. T.G. Lohman, A.F. Roche, R.Martorell (Eds). Anthropometric Standartization Referance Manuel. Champaign: Human Kinetics.
26. Hazır T. (2000). Aerobik Dayanıklılığın Değerlendirilmesinde Mekik Koşusunun Güvenirliği ve Geçerliği. Yayınlanmamış Doktora Tezi. Ankara: H.Ü. Sağlık Bilimleri Enstitüsü.
27. Hazır T, Aşçı A, Özkara A, Açıkada C, Tınazcı C, Cinemre A, Mavili S. (2002). Türkiye süper liginde oynayan futbolcuların bir kısım fiziksel ve biyomotorik profilleri: Mevkiler arası karşılaştırma. 7. Uluslararası Spor Bilimleri Kongresi, 27-29 Ekim 2002, Antalya.
28. Helgerud J, Engen LC, Wisloff U, Hoff J. (2001). Aerobic endurance training improves soccer performance. Medicine and Science in Sports and Exercise, 33, 1925-1931.
29. Hoogeveen AR, Schep G. (1997). “The plasma lactate response to exercise and endurance performance:relationships in elite triathletes. International Journal of Sports Medicine, 18(7), 526-30.
30. Janssen P. (2001). Lactate Threshold Training. USA: Human Kinetics.
31. Maffulli N, Capasso G, Lancia A. (1991). Anaerobic threshold and performance in middle and long distance running. Journal Sports Medicine and Physical Fitness, 31, 332-40.
32. McLellan TM, Cheung KS. (1992). A comparative evaluation of the individual anaerobic threshold and the critical power. Medicine and Science in Sports and Exercise, 24(5), 543-50.
33. McMillan K, Helgerud J, Grant SC, Newell J, Wilson J, Macdonald R, Hoff J. (2005). Lactate threshold responses to a season of professional British youth soccer. British Journal of Sports Medicine,. 39, 432–436.
34. Mohr M, Krustrup P, Bangsbo J. (2003). Match performance of high-standard soccer players with special reference to development of fatigue. Journal of Sports Sciences, 21, 439 - 449.
35. Norton K, Jones MM, Whittingham N, Kerr D, Carter L. ve diğ.. (2000). Anthropometric assessment protocols; Physiological tests for elite athletes (Ed: Gore, C.J.). USA: Human Kinetics
36. Puga R, Ramos J, Agostinho J, Lomba I, Costra O, Freıtas F. (1993). Physical profile of a first division professional soccer team. In: Science and Football II. J. Clarys, M. Stibbe, and T. Reilly, eds. London: E. & F.N. Spon, 1993. pp. 40–42.
37. Reilly T, Thomas V. (1976). A motion analysis of work rate in different positional roles in pro football match-play. Journal of Human Movement Studies, 2, 87-97.
38. Reilly T, Bangsbo J, Franks A. (2000). Anthropometric and Physiological predispositions for elite soccer. Journal of Sports Sciences, 18, 669–683.
39. Rodrigues V, Mortimer L, Condessa L, Coelho D, Soares D, Garcia E. (2007). Exercise intensity in traininig sessions and official games in soccer. Journal of Sport Science and Medicine, Vol 6, Suppl, VI World Congress on Science and Football, January, 15 – 20, Antalya/Türkiye.
40. Shephard RJ. (1992). “Maximal Oxygen İntake”. Endurance in Sport. (Ed: Shephard R.J- Astrand, P.O.). USA: Balackwell Scientific Publication.
41. Smaros G. (1980). Energy usage during a football match. Proceedings of the 1. International Congress on Sports Medicine Applied to Football. Rome, 795-801.
42. Stroyer J, Hansen L, Klausen K. (2004). Physiological Profile and Activity Pattern of Young Soccer Players during Match Play. Med Sci Sports Exerc., 36, 68–174.
43. Vachon AJ, Basset DR, Clarke S. (1999). Validity of the heart rate deflection point as a predictor of lactate threshold during running. J. Appl. Physiol., 87(1), 452-9