Neuromuscular Coordination as a Factor in Age Changes in Muscular Exercise

Author(s):  
N. W. Shock ◽  
A. H. Norris
Author(s):  
R. Carriere

The external orbital gland of the albino rat exhibits both sexual dimorphism and histological age changes. In males, many cells attain a remarkable degree of polyploidy and an increase of polyploid cell number constitutes the major age change until young adulthood. The acini of young adults have a small lumen and are composed of tall serous cells. Subsequently, many acini acquire a larger lumen with an irregular outline while numerous vacuoles accumulate throughout the secretory cells. At the same time, vesicular acini with a large lumen surrounded by pale-staining low cuboidal diploid cells begin to appear and their number increases throughout old age. The fine structure of external orbital glands from both sexes has been explored and in considering acinar cells from males, emphasis was given to the form of the Golgi membranes and to nuclear infoldings of cytoplasmic constituents.


2019 ◽  
Author(s):  
Beijia Tan ◽  
Jenee Love ◽  
Leigh Harrell-Williams ◽  
Christian E. Mueller ◽  
Martin H. Jones

1972 ◽  
Vol 70 (1) ◽  
pp. 73-80 ◽  
Author(s):  
L. W. Raymond ◽  
J. Sode ◽  
J. R. Tucci

ABSTRACT Treadmill walking produced a prompt reduction in serum cortisol in 10 of 12 healthy military men. In contrast, two subjects, with pre-exercise tachycardia and apprehension, showed an increase in serum cortisol with treadmill exercise. In each group, the changes produced by exercise were still evident 30 and 60 minutes after the 30-minute treadmill walk. Urine collected before and after exercise contained similar amounts of 11-hydroxy- and 17-hydroxycorticosteroid material. These results may be explained by an increase in cortisol utilization during exercise and/or by a change in its distribution. The data indicate that in the absence of psychic factors, non-exhaustive exercise is not associated with pituitary adrenocortical activation.


2018 ◽  
Vol 4 (10) ◽  
pp. 6
Author(s):  
Khemchandra Patel ◽  
Dr. Kamlesh Namdev

Age changes cause major variations in the appearance of human faces. Due to many lifestyle factors, it is difficult to precisely predict how individuals may look with advancing years or how they looked with "retreating" years. This paper is a review of age variation methods and techniques, which is useful to capture wanted fugitives, finding missing children, updating employee databases, enhance powerful visual effect in film, television, gaming field. Currently there are many different methods available for age variation. Each has their own advantages and purpose. Because of its real life applications, researchers have shown great interest in automatic facial age estimation. In this paper, different age variation methods with their prospects are reviewed. This paper highlights latest methodologies and feature extraction methods used by researchers to estimate age. Different types of classifiers used in this domain have also been discussed.


2003 ◽  
Vol 42 (149) ◽  
pp. 315-6
Author(s):  
Arijit Ghosh ◽  
T Pramanik

Higher exercise blood pressure represents low cardiorespiratory status of an individual and vice versa. Thechanges in systolic and diastolic blood pressure in response to rhythmic isotonic muscular exercise in sedentaryyoung normotensive Nepalese students were assessed. Normal blood pressure in standing posture in maleand female subjects are about 115 / 75 mm of Hg. and 106 / 71 mm of Hg. respectively. Just after the exercisesystolic blood pressure increases moderately in both the sexes, whereas diastolic blood pressure remainsunchanged in most of the females. Diastolic blood pressure is found to be decreased slightly in the males,just after exercise. The present study indicates the cardiorespiratory status of the Napalese medical studentsis within normal range.


1983 ◽  
Author(s):  
Frank A. Frederick ◽  
Richard C. Langevin ◽  
Jose Miletti ◽  
Michael Sacco ◽  
Michelle M. Murphy ◽  
...  

1963 ◽  
Vol 18 (5) ◽  
pp. 991-993 ◽  
Author(s):  
Aarne Konttinen ◽  
Timo Somer

The correlation between postprandial triglyceridemia and plasma viscosity was studied in 45 healthy young men. One-half, 23, of them carried out a heavy march lasting 2 hr while the other half, 22, rested in bed. Serum triglycerides and plasma viscosity were determined before the fat meal and 4 and 6 hr postprandially. Serum total proteins and hematocrits were measured simultaneously. Despite significantly higher postprandial triglyceridemia in the resting group no rise was seen in plasma viscosity, whereas, in the exercise group with a lower triglyceride level a significant elevation took place in plasma viscosity. serum triglycerides Submitted on February 18, 1963


1923 ◽  
Vol 55 (3) ◽  
pp. 495-523
Author(s):  
David P. Barr ◽  
Harold E. Himwich ◽  
Robert P. Green
Keyword(s):  

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