Effect of post-tetanic potentiation of pectoralis and triceps brachii muscles on bench press performance.
The effect of post-tetanic potentiation (PTP) induced in the pectoralis and triceps brachii muscles by high-frequency submaximal percutaneous electrical stimulation (PES) on average and maximal power attained in bench press throwing was measured in 12 healthy men. Three PES regimens were used: (a) a 7-second and (b) a 10-second trial at 100 Hz, and (c) an intermittent trial with 8 1-second tetanic trains at 100 Hz with rest periods of 20 seconds. Only nonsignificant (p > 0.05) increase was observed in average power at 8 minutes and in maximal power at 5, 8, and 11 minutes after tetanus after 7-second trial, and in maximal power at 5 and 8 minutes after tetanus after an intermittent trial. These data indicate that PES application was a noneffective stimulus for increased bench press performance. A great interindividual variability response was observed and, therefore, PTP induction for improving upper-body muscle performance needs further experiments.
Requena
Bernardo
B
Department of Physical Education and Sport, University of Granada, Spain. brequena@ugr.es
Zabala
Mikel
M
Ribas
Juan
J
Ereline
Jaan
J
Pääsuke
Mati
M
González-Badillo
Juan José
JJ
D000328:Adult; D000704:Analysis of Variance; D004558:Electric Stimulation; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D010369:Pectoralis Muscles / Q000502:physiology*; D010806:Physical Education and Training; D010807:Physical Endurance / Q000502:physiology; D015203:Reproducibility of Results; D014891:Weight Lifting / Q000502:physiology*