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Titolo:
EFFECTS OF CONTRACT-RELAX STRETCHING TRAINING ON MUSCLE PERFORMANCE IN ATHLETES
Autore:
HANDEL M; HORSTMANN T; DICKHUTH HH; GULICH RW;
Indirizzi:
UNIV TUBINGEN,INST PHYSIOL 2,GMELINSTR 5 D-72076 TUBINGEN GERMANY UNIV TUBINGEN,INST PHYSIOL 2 D-72076 TUBINGEN GERMANY UNIV TUBINGEN,DEPT SPORTS MED,MED CLIN 5 D-72074 TUBINGEN GERMANY
Titolo Testata:
European journal of applied physiology and occupational physiology
fascicolo: 5, volume: 76, anno: 1997,
pagine: 400 - 408
SICI:
0301-5548(1997)76:5<400:EOCSTO>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROPRIOCEPTIVE NEUROMUSCULAR FACILITATION; HIP-JOINT; WARM-UP; FLEXIBILITY; STRENGTH; RANGE; ENHANCEMENT; IMPROVEMENT; FIBERS; MOTION;
Keywords:
SKELETAL MUSCLE; CONTRACT-RELAX STRETCHING TRAINING; FLEXIBILITY; ISOKINETIC DYNAMOMETRY; FORCE-VELOCITY RELATIONSHIP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
40
Recensione:
Indirizzi per estratti:
Citazione:
M. Handel et al., "EFFECTS OF CONTRACT-RELAX STRETCHING TRAINING ON MUSCLE PERFORMANCE IN ATHLETES", European journal of applied physiology and occupational physiology, 76(5), 1997, pp. 400-408

Abstract

The effects of an 8-week unilateral contract-relax (CR) stretching training program (passive stretch after isometric contraction) on muscular performance were investigated in a group of 16 athletes, The flexibility, maximum torque and angular position as well as contraction workin movements of the knee joint were determined before training and after 4 and 8 weeks of training. The torque measurements were performed under isokinetic conditions, eccentrically at angular velocities of 60degrees.s(-1) and 120 degrees.s(-1) isometrically at five different joint positions, and concentrically at angular velocities of 60, 120, 180 and 240 degrees.s(-1) using and iso-kinetic dynamometer. A surface electromyogram (EMG) of the thigh muscles (quadriceps and hamstrings) was recorded simultaneously. As compared to untrained control limbs, significant improvements in active and passive flexibility (up to 6.3 degrees in range of motion), maximum torque (up to 21.6%) and work (up to 12.9%) were observed, and these were especially pronounced under eccentric load conditions. A comparison between integrated EMG recordings during eccentric and concentric loads, as well as the interpretationof the training-induced changes in the EMG, suggest that muscular activity under eccentric loads may be impaired by mental processes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 13:39:00