![]() (1969) The histographic analysis of human muscle biopsies with regard to fiber types, Part 1: Adult male and female. (1960) The size of muscle fibers in infants and children. North-Holland Publishing Company, Amsterdam-London.īowden, D. (1970) Muscle pathology, introduction and atlas, p. (1967) Change in fiber size in Duchenne muscular dystrophy. Isometric strength performance and muscle fibre type distribution in man. Biomechanical analysis of knee flexion and extension. ![]() ![]() Fiber types and metabolic potentials of skeletal muscles in sedentary man and endurance runners. Saltin B, Henriksson J, Nygaard E, Andersen P, Jansson E.Computerized transverse axial scanning (tomography). Measurement of the isometric force in different positions of the knee-joint. The mechanics of extension of the knee-joint. Calculation of muscle strength per unit cross-sectional area of human muscle by means of ultrasonic measurement. Absolute muscle force in the ankle flexors of man. Cross-sectional area of the thigh muscle in man measured by computed tomography. J Appl Physiol Respir Environ Exerc Physiol. Muscular enlargement and number of fibers in skeletal muscles of rats. Gollnick PD, Timson BF, Moore RL, Riedy M.Ferrucci JT., Jr Body ultrasonography (second of two parts). ![]() Human skeletal muscle function: description of tests and normal values. Edwards RH, Young A, Hosking GP, Jones DA.The assessment of the amount of fat in the human body from measurements of skinfold thickness. Dynamic properties of mammalian skeletal muscles. Motor unit properties and selective involvement in movement. Computed tomography of the human skeletal muscular system. Bulcke JA, Termote JL, Palmers Y, Crolla D.Muscle fiber types: how many and what kind? Arch Neurol. Brain cancer in petrochemical workers: a case series report. Alexander V, Leffingwell SS, Lloyd JW, Waxweiler RJ, Miller RL.Links to PubMed are also available for Selected References. Get a printable copy (PDF file) of the complete article (1.5M), or click on a page image below to browse page by page. Full textįull text is available as a scanned copy of the original print version. The variation between subjects is such that strength is not a useful predictive index of muscle cross-sectional area. This variability may be a result of anatomical differences between subjects or may result from differences in the proportions of different fibre types in the muscles. A wide variation in the ratio of strength to muscle cross-sectional area was observed. In both male and female groups, there was a significant (P less than 0.01) positive correlation between muscle strength and cross-sectional area. This is greater but not significantly so, than that for females (8.92 +/- 1.11). The ratio of strength to cross-sectional area for the male was 9.49 +/- 1.34 (mean +/- S.D.). Muscle cross-sectional area of the male subjects was greater than that of the female subjects (P less than 0.001). ![]() In the male subjects, but not in the female group, there was a positive correlation (r = 0.50 P less than 0.01) between strength and lean body mass. No significant correlation was found to exist between strength of the knee-extensor muscles and body weight in the male or in the female subjects. Male subjects were taller (P less than 0.001), heavier (P less than 0.001), leaner (P less than 0.001) and stronger (P less than 0.001) than the female subjects. An estimate of body fat content was obtained from measurements of skinfold thicknesses and used to calculate lean body mass. The subjects' height and weight were measured. The cross-sectional area of the knee-extensor muscles was determined from the image obtained by computer-based planimetry. Computed tomography was used to obtain a cross-sectional image of the subjects' legs at mid-thigh level, measured as the mid-point between the greater trochanter and upper border of the patella. Both legs were tested: data from the stronger leg only for each subject were used in the present study. The maximum voluntary force (strength) which could be produced by the knee-extensor muscles, with the knee held at a right angle, was measured in a group of healthy young subjects comprising twenty-five males and twenty-five females. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |