M Pérez1, A Lucia, A Santalla, J L Chicharro. 1. Facultad de Ciencias de la Actividad Física y el Deporte, Universidad Europea de Madrid, E-28670 Villaviciosa de Odón, Madrid, Spain.
Abstract
OBJECTIVE: To determine the effects of electrical stimulation (ES) on oxygen uptake (VO(2)) kinetics and delta efficiency (DE) during gradual exercise. The hypothesis was that ES would attenuate the VO(2)-workload relation and improve DE. METHODS:Fifteen healthy, untrained men (mean (SD) age 22 (5) years) were selected. Ten were electrostimulated on both quadriceps muscles with a frequency of 45-60 Hz, with 12 seconds of stimulation followed by eight seconds recovery for a total of 30 minutes a day, three days a week for six weeks. The remaining five subjects were assigned to a control group. A standardised exercise test on a cycle ergometer (ramp protocol, workload increases of 20 W/min) was performed by each subject before and after the experimental period. The slope of the VO(2)-power output (W) relation (deltaVO(2)/deltaW) and DE were calculated in each subject at moderate to high intensities (above the ventilatory threshold-that is, from 50-60% to 100% VO(2)max). RESULTS: The mean (SEM) values for deltaVO(2)/deltaW and DE had significantly decreased and increased respectively after the six week ES programme (p<0.05; 9.8 (0.2) v 8.6 (0.5) ml O(2)/W/min respectively and 27.7 (0.9) v 31.5 (1.4)% respectively). CONCLUSIONS: ES could be used as a supplementary tool to improve two of the main determinants of endurance capacity, namely VO(2) kinetics and work efficiency.
RCT Entities:
OBJECTIVE: To determine the effects of electrical stimulation (ES) on oxygen uptake (VO(2)) kinetics and delta efficiency (DE) during gradual exercise. The hypothesis was that ES would attenuate the VO(2)-workload relation and improve DE. METHODS: Fifteen healthy, untrained men (mean (SD) age 22 (5) years) were selected. Ten were electrostimulated on both quadriceps muscles with a frequency of 45-60 Hz, with 12 seconds of stimulation followed by eight seconds recovery for a total of 30 minutes a day, three days a week for six weeks. The remaining five subjects were assigned to a control group. A standardised exercise test on a cycle ergometer (ramp protocol, workload increases of 20 W/min) was performed by each subject before and after the experimental period. The slope of the VO(2)-power output (W) relation (deltaVO(2)/deltaW) and DE were calculated in each subject at moderate to high intensities (above the ventilatory threshold-that is, from 50-60% to 100% VO(2)max). RESULTS: The mean (SEM) values for deltaVO(2)/deltaW and DE had significantly decreased and increased respectively after the six week ES programme (p<0.05; 9.8 (0.2) v 8.6 (0.5) ml O(2)/W/min respectively and 27.7 (0.9) v 31.5 (1.4)% respectively). CONCLUSIONS: ES could be used as a supplementary tool to improve two of the main determinants of endurance capacity, namely VO(2) kinetics and work efficiency.
Authors: Alejandro Lucía; José-Luis L Rivero; Margarita Pérez; Antonio L Serrano; José A L Calbet; Alfredo Santalla; José L Chicharro Journal: Med Sci Sports Exerc Date: 2002-02 Impact factor: 5.411
Authors: Margarita Pérez; A Lucia; J-l L Rivero; A L Serrano; J-A L Calbet; M A Delgado; J L Chicharro Journal: Pflugers Arch Date: 2002-01-22 Impact factor: 3.657
Authors: José L Maté-Muñoz; Juan H Lougedo; Manuel Barba; Ana M Cañuelo-Márquez; Jesús Guodemar-Pérez; Pablo García-Fernández; María Del C Lozano-Estevan; Rosa Alonso-Melero; María A Sánchez-Calabuig; Monserrat Ruíz-López; Fernando de Jesús; Manuel V Garnacho-Castaño Journal: J Sports Sci Med Date: 2018-11-20 Impact factor: 2.988
Authors: Raúl Domínguez; Eduardo Cuenca; José Luis Maté-Muñoz; Pablo García-Fernández; Noemí Serra-Paya; María Carmen Lozano Estevan; Pablo Veiga Herreros; Manuel Vicente Garnacho-Castaño Journal: Nutrients Date: 2017-01-06 Impact factor: 5.717
Authors: José Luis Maté-Muñoz; Juan H Lougedo; Manuel Barba; Pablo García-Fernández; Manuel V Garnacho-Castaño; Raúl Domínguez Journal: PLoS One Date: 2017-07-28 Impact factor: 3.240