Harold M. Kaplan

The Multiple Angle Testing Method for the Evaluation of Muscle Strength

The Multiple Angle Testing Method for the Evaluation of Muscle Strength JAY BENDER;HAROLD KAPLAN; The Journal of Bone & Joint Surgery

Electrocardiography in turtles

Abstract The normal ECG of turtles is similar to that of man, but low voltage waves are the rule. The Q and S waves are uncommon. Sex differences are described. In the female the P-R interval is shorter, but the R and T waves are longer and have a lower voltage Unfed males and females show occasional arrhythmias and marked electrical differences from the normal in the voltages and durations of the ECG parameters, but the sex differences which characterize the fed turtles are slightly reduced. Several significant differences are described in the ECG in the surgical stage of anesthesia produced by ether or by sodium pentobarbital. Species differences are observable in the ECG records, but these differences may reside largely in the different pacemaker rates.

Determination of Success or Failure in Dynamic (Isotonic) Movements by Isometric Methods

Abstract A study was conducted to determine whether dynamic (isotonic) strength may be evaluated isometrically. A measurable task, chinning (pull-ups), was selected. A survey was first made of 128 young males to determine whether isometric testing could select and predict successful from nonsuccessful chinners (ability or inability to chin once). Isometric testing positions were used at places where failure was previously demonstrated to be frequent on the dynamic task. The results showed that failures in the dynamic task could be predicted by isometric measurements. Subjects who were unsuccessful were given special exercises. Those who eventually became successful reached the predetermined isometric strength levels necessary for success. The unsuccessful never attained those levels. The strength necessary for a dynamic movement appears to be amenable to measurement by isometric techniques. The data suggest that perhaps the controlled dynamic movement against resistance is essentially a series of isometri...

Leucocyte Diluent for Frog Blood

In this study, conventional diluting fluids were tested and others formulated in order to develop an appropriate fluid for dif- ferentiation and counting, by classical visual techniques, the white blood cells of ectotherms. Because of its widespread use and the fact that its blood cells are fairly representative of ectotherms, this inves- tigation was restricted to Rana pipiens. * * Diluting fluids for counting the leucocytes of mammals have been known for many years, but they have not been entirely satisfactory for fish, amphibians and reptiles. Nucleated erythrocytes or the remnants thereof in the blood of ectotherms may be confused with leucocytes, e. g. mononuclear leucocytes. Hence, accurate white cell identification and counts would be facilitated if the erythrocytei could be sharply differentiated or destroyed.

Acceptance of Disabled College Students into Teacher Training Programs

Policies governing the acceptance of physically disabled college students into teacher training programs were surveyed in 1,291 colleges and universities. Responses from 618 (58 percent return) were analyzed by size and type of school and type of disability. Since no consistent policies emerged, some possible reasons for the reported practices are explored and some specific recommendations are offered.

Hematologic changes in man resulting from a regimen of isometric exercise

Abstract Twelve human subjects were assigned to two groups of equal numbers. One group trained isometrically; the other served as a control. Resting blood samples were taken 1, 3, 5, 7, and 8½ weeks after initiation of training, and 2 and 3 weeks after cessation of training. Blood was examined for coagulation time, hemoglobin concentration, and for erythrocyte, leucocyte, and platelet counts. Packed cell volumes were determined before and after training. Scores indicative of muscular strength were recorded throughout training. Isometric training may have produced a chronic decrease in coagulation time; it had no effect on hemoglobin concentration or on erythrocyte, leucocyte, and platelet counts. Increases in scores indicative of muscular strength were statistically significant (1 percent level of probability).

A Curriculum Guide for Human Physiology

Introduction At the secondary school level, the biology of animal life is usually emphasized and conventionally from a morphologic and systematic point of view. A course dealing with function, preferably of the human body under the specific title of physiology, has much to offer as a sequel, or as an alternative, to the animal biology course, and it challenges talented students. A review of the literature reveals a need for a curriculum guide for secondary school physiology, and one is proposed herein that could be followed in most school situations. A study of anatomy may be integrated with that of physiology, since for an optimal comprehension of function there is needed an overall knowledge of structure. Conversely, physiology explains structures in action, and the curriculum guide is based on the view that each should be taught in terms of the other.