EurekaMag.com logo
+ Translate

Relationship between muscle fiber composition capillary supply oxidative enzyme activity and aerobic work capacity in middle and long distance runners


, : Relationship between muscle fiber composition capillary supply oxidative enzyme activity and aerobic work capacity in middle and long distance runners. Japanese Journal of Physical Fitness & Sports Medicine 35(4): 182-191

It was the purpose of this study to examine the property of skeletal muscle fiber in middle- and long-distance runners, and to evaluate the relationship between the property of skeletal muscle fiber and aerobic work capacity. Biopsy samples were taken from M. vastus lateralis of 23 middle- and long-distance runners, and analyzed for muscle fiber composition, capillary supply and SDH activity. Aerobic work capacity was measured on a treadmill with continuous method. The mean value for % ST in M. vastus lateralis was 61.3%, and the muscle fiber distribution showed the tendency of slow type. The cross-sectional area of ST and FT fibers ranged approximately from 3,000 .mu.m2 to 13,000 .mu.m2, and the cross-sectional area of ST fiber tended to be larger than that FT fiber. The mean values for CD, C/F ratio, and CC(/ST) as capillary supply were 279/mm2, 1.62 and 5.7, respectively. The mean value for SDH activity was 5.86 .mu.moles/g/min, and was lower than reported previously for elite tumors. In addition, SDH activity correlated with % ST and CC(/ST) (r=0.480, p < 0.05, r=0.640, p < 0.01). On the other hand, the mean value for .ovrhdot.VO2max was 68.5 ml/kg/min (4,066 ml/min), while .ovrhdot.VO2@AT averaged 45.9 ml/kg/min (2,756 ml/min). And it was fond that .ovrhdot.VO2max and .ovrhdot.VO2@AT correlated significantly with % ST, CC(/ST) and SDH activity. Particularly, .ovrhdot.VO2max was most strongly related to SDH activity (r=0.612, p < 0.01). The results of this study suggest that in regard to middle- and long-distance runners, structural characteristics of the ST fiber and capillary are some of the indispensable factors to regulate such a functional property as SDH activity and that the distinctive characteristics of the skeletal muscle fiber might possibly influence aerobic work capacity to a great extent.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 006297753

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Braun Fahrlander, C.; Wuthrich, B.; Gassner, M.; Grize, L.; Sennhauser, F. H.; Varonier, H. S.; Vuille, J. C.; Team, Scarpol, 1996: Prevalence of rhinitis symptoms and hay fever and their association with allergic sensitization in Swiss school children. European Respiratory Journal Supplement 9(23): 233S

Harmon J.M.; Thompson E.B., 1981: Isolation and characterization of dexamethasone resistant mutants from human lymphoid cell line cem c 7. Independent dexamethasone-resistant clones (54) were isolated from the clonal, glucocorticoid-sensitive human leukemic T-cell line CEM-C7. Resistance to 1 .mu.M dexamethasone was acquired spontaneously at a rate of 2.6 .times. 10-5/cell per genera...

Freeman M.A.R., 1971: Experimental fatigue fracture of the human cadaveric femoral neck. Journal Of Bone & Joint Surgery British Volume: 136-143

Li, Dayong.; Grueter, Cyril C.; Ren, Baoping.; Zhou, Qihai.; Li, Ming.; Peng, Zhengsong.; Wei, Fuwen E-mail: weifwioz.ac.cn., 2006: Characteristics of night-time sleeping places selected by golden monkeys (Rhinopithecus bieti) in the Samage Forest, Baima Snow Mountain Nature Reserve, China. We examined the criteria for sleeping place selection in a social band of Rhinopithecus bieti (black-and-white snub-nosed or golden monkeys) living in the mountainous Samage Forest, Baima Snow Mountain Nature Reserve, Yunnan, China. We performed p...

Lynch, Henry T.; Tinley, Susan T.; Shaw, Trudy G.; Lynch, Jane F.; Howe, James R.; Attard, Thomas M., 2004: Challenging colonic polyposis pedigrees: Differential diagnosis, surveillance, and management concerns. Hereditary polyposis syndromes show extensive phenotypic and genotypic heterogeneity within and among families, a situation that may hinder diagnosis. In these settings, germline mutation testing may be the sine qua non for diagnosis if such a mut...

Kolle, W.; Prigge, R., 1927: Fundamentals of the theory of acquired active and passive immunity With a 3-page bibliography. W KOLLE und A v WASSERMANN Handbuch der pathogenen Mikro-organismen 3 Aufl W KOLLE, R KRAUS, und P UHLENHUTH P 607-662

Fletcher M.E.; Stocks J.; Stack C.; Davies C.J.; Ridley S.; Hatch D.J., 1990: The effect of anesthesia on respiratory compliance in infants and young children. American Review of Respiratory Disease 141(4 PART 2): A287

Rakowski, K., 1976: Purchases of consumption eggs and slaughter poultry in 1950-1975. Drobiarstwo 24 (2) 10-11

Gold, Mr; Franks, P., 1989: Farming: primary prevention for hypertension? Effects of employment type on blood pressure. Journal of rural health 5(3): 257-256

Stasyuk, V. I., 1975: The structure of plum and sour cherry root systems on common chernozems in the Donbass area. Root distribution in the 2 species was studied in relation to irrigation, fertilization and soil cultivation and the findings are discussed.