Relationship between the training power, work, rest periods and the increase of the muscular torque

Abstracts-International Society of Biomechanics XIV Congress 1993

664

.QUANTITATIVE EVALUATION OF THE REPE.4TABILITY OF THE C.%TWHEEL.4T THE BEAM AS ASSESSED BY A NEW METHOD. Virgilio F. Ferrario. Chiarella Sforza. Carmen Basla. and Tiziano Santini. Laboratorio di Anatomia Funzionale dell’Apparato Locomotore. I.S.E.F. Lombardia. Universita degli Studi di Milano. Italy. A statistical method for the quantification of body shape during the performance of gymnastic exercises has been developed. Two elite gymnasts performed two series of 45 cartwheels (CW) at the beam each. The C W were recorded using a TV-camera. its view plane set parallel to the beam. For each CW. the first hand-beam contact was evaluated. and the position of 11 standardized body landmarks was digitized using a semiautomated instrument The execution of the C W was considered correct when the gymnast (Videotrack. BTS. Italy). ended the exercise in perfect equilibrium on the beam. The landmark coordinates were analyzed by the Morphological Variation Analysis (MVA). which evaluates the global calculates all the possible euclidean variability between repeated shapes. MVA first Like distances measured on each object distances between the landmarks on a single object. are then averaged. and the relevant coefficients of variation calculated. They describe the The SDS calculated on each linear distance and the intrinsic variability of each distance. mean linear distances are further averaged. and the ratio between these two values provides a Morphological Variation Factor (MVF = mean of the SD/mean of the mean distancesi. The mT and indicates how reproducihie a measures the global variability for that set of exercises. shape is. Low MVFs correspond to highly reproducible body positions. The correct CWs showed from thr standard pattern were a higher repeatability of body shape. while deviations observed in the incorrect exercises.

&‘ANTITATIVE EVALUATION OF THE STYLE OF W N E M E X T DURING THE BASI;ETHALL FREE THROW. .\ MU, MORF’HOLCGICAL ANALYSIS. Virgilio F. Ferrario. Chiarella Sforza. Giovanni Michielon. and Mauro Pisoni. Laboratorio di Anatomia Funzionale dell’Apparato Locomotore. I.S.E.F. Lombardia. Universita degli Studi di Milano. Italy. Shape differences in the arrangement of body segments during the e~t’cul~on of players performed athletic movements have been quantified by a new method. Two basketball several series of free throws IFT) which were recorded on the sagittal plant by a TVcamera. For each FT only the last hand-ball contact was evaluated. and the posit ion of I!) standardized body landmarks was digitized using a semiautomated instrument IVideotrach. BTS. Italy). The landmark coordinates were analyzed by the Morpholopical i’arlation Anal!.sl~ (MVA). which evaluates the global variability between repeated shapes. ?&‘A first calculate? oh~ecr. l.~ke all the possible euclidean distances between the landmarks on a single and the relevant coefficients of distances measured on each object are then averaged. variation calculated. They describe the intrinsic variability of each distance. The SD5 calculated on each linear distance and the mean linear distances are then averaged. and tht ratio between these two values provides a Morphological Variation Factor (SfiTF = mean of the The MVF meatures the global variability for that set of SD/mean of the mean distances). exercises. to hlchi! and indicates how reproducible a shape is. Loiv >lVFs correspond The MVA demonstrated that the global body shape in tht las: reproducible body positions. hand-ball contact significantly influenced the result of the FT: the meiln posltlic [haI I inside the basket) and negative (ball outside) shapes were different. Both athlete5 \hoHeci higher reproducibility of the movement withln positive results.

RELATIONSHIP BETWEEN THE TRAIN1 NG POWER, WORK, REST PERIODS AND THE INCREASE OF THE MUSCULAR TORQUE Kazimierz Fidelus and Czesaaw Urbanik Department of Bi omechani cs Academy of Physical Education, 01-813 Warsaw, Poland The aim of the investigation was to measure the training load components like: the work done, the power developed. rest period, number of repetitions and exercises during the training. These velues were compared with the muscle torque increase at different types of training performed 9-6 times weekly during 3-4 weeks by 150 students. The training was performed on a small wheel by the person which take off and then slide down on an inclined plane.We have found the good relationship between training power and muscular torque Cr = 0.78, p. The other load components influence the increas of muscular torque as fare as they are

influensing

the

more

powerful

exercises.