Evaluation of the effectiveness of training on a machine with a variable-cam.
The aim of the study was to assess the effectiveness of the training of elbow flexors through the use of 2 machines, one of which was equipped with a disc plate of constant radius, the other one with a variable-cam having a radius adjustable to muscle strength. The experiment included 45 men divided into 3 equal groups: training group A (variable-cam), training group B (circle), and control group C. The training lasted for 8 weeks, 3 times a week. In order to control the effects, the values of peak torque and power of the flexor muscles of the elbow were isokinetically measured for the angular velocities of 30°/s and 60°/s. Also taken were anthropometric measurements of the arm and the creatine kinase (CK) activity in the blood plasma. As a result of the training, significant increases of biomechanical values were noted only in group A: power increased over 20%, the peak torque over 14%. After the training, significant increases of arm circumference in the relaxed position were noted in group A (17 mm), as well as in group B (11 mm). Also, some changes in CK activity were observed between Monday and Friday in a training week. On the basis of the experimental measurements, it may be ascertained that training elbow flexor muscles on a machine with a variable-cam is more efficient for increases in strength and power, as well as for some anthropometric parameters, than training on a machine with a disc plate.
Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education in Warsaw, Poland.
Czesław
C
Urbanik
Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education in Warsaw, Poland.
Michał
M
Staniszewski
Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education in Warsaw, Poland.
Andrzej
A
Mastalerz
Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education in Warsaw, Poland.
Magdalena
M
Karczewska
Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education in Warsaw, Poland.
Grażyna
G
Lutosławska
Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education in Warsaw, Poland.
Dagmara
D
Iwańska
Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education in Warsaw, Poland.
Anna
A
Madej
Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education in Warsaw, Poland.
Elżbieta
E
Ostrowska
Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education in Warsaw, Poland.
Lucyna
L
Gwarek
Józef Piłsudski University of Physical Education in Warsaw, Faculty of Physical Education in Warsaw, Poland.
Joanna
J
Tkaczyk
D001132:Arm / Q000502:physiology; D003402:Creatine Kinase / Q000097:blood; D004551:Elbow Joint / Q000502:physiology; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology; D010827:Physiology / Q000295:instrumentation* / Q000379:methods*; D013647:Task Performance and Analysis; D019415:Torque; D055815:Young Adult
D003402:Creatine Kinase