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Is Low-Frequency Electrical Stimulation a Tool for Recovery after a Water Rescue? A Cross-Over Study with Lifeguards

Author

Listed:
  • Roberto Barcala-Furelos

    (REMOSS Research Group, Faculty of Education and Sport Sciences, University of Vigo, 36005 Pontevedra, Spain
    CLINURSID Network Research, Department of Psychiatry, Radiology and Public Health, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain)

  • Alicia González-Represas

    (Department of Functional Biology and Health Sciences, Faculty of Physiotherapy, University of Vigo, 36005 Vigo, Spain)

  • Ezequiel Rey

    (REMOSS Research Group, Faculty of Education and Sport Sciences, University of Vigo, 36005 Pontevedra, Spain)

  • Alicia Martínez-Rodríguez

    (Department of Physiotherapy, Medicine and Biomedical Sciences, Universidade da Coruña, 15006 La Coruña, Spain)

  • Anton Kalén

    (REMOSS Research Group, Faculty of Education and Sport Sciences, University of Vigo, 36005 Pontevedra, Spain)

  • Olga Marques

    (Faculty of Sports Sciences and Physical Education, University of Coimbra, 3040-156 Coimbra, Portugal
    Research Unit for Sport and Physical Activity (CIDAF), 3040-156 Coimbra, Portugal)

  • Luís Rama

    (Faculty of Sports Sciences and Physical Education, University of Coimbra, 3040-156 Coimbra, Portugal
    Research Unit for Sport and Physical Activity (CIDAF), 3040-156 Coimbra, Portugal)

Abstract

This study aimed to evaluate the degree to which transcutaneous electrical stimulation (ES) enhanced recovery following a simulated water rescue. Twenty-six lifeguards participated in this study. The rescue consisted of swimming 100 m with fins and rescue-tube: 50 m swim approach and 50 m tow-in a simulated victim. Blood lactate clearance, rated perceived effort (RPE), and muscle contractile properties were evaluated at baseline, after the water rescue, and after ES or passive-recovery control condition (PR) protocol. Tensiomiography, RPE, and blood lactate basal levels indicated equivalence between both groups. There was no change in tensiomiography from pre to post-recovery and no difference between recovery protocols. Overall-RPE, legs-RPE and arms-RPE after ES (mean ± SD; 2.7 ± 1.53, 2.65 ± 1.66, and 2.30 ± 1.84, respectively) were moderately lower than after PR (3.57 ± 2.4, 3.71 ± 2.43, and 3.29 ± 1.79, respectively) ( p = 0.016, p = 0.010, p = 0.028, respectively). There was a significantly lower blood lactate level after recovery in ES than in PR (mean ± SD; 4.77 ± 1.86 mmol·L −1 vs. 6.27 ± 3.69 mmol·L −1 ; p = 0.045). Low-frequency ES immediately after a water rescue is an effective recovery strategy to clear out blood lactate concentration.

Suggested Citation

  • Roberto Barcala-Furelos & Alicia González-Represas & Ezequiel Rey & Alicia Martínez-Rodríguez & Anton Kalén & Olga Marques & Luís Rama, 2020. "Is Low-Frequency Electrical Stimulation a Tool for Recovery after a Water Rescue? A Cross-Over Study with Lifeguards," IJERPH, MDPI, vol. 17(16), pages 1-10, August.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:16:p:5854-:d:398110
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    Cited by:

    1. Alessandro Piras & Lorenzo Zini & Aurelio Trofè & Francesco Campa & Milena Raffi, 2021. "Effects of Acute Microcurrent Electrical Stimulation on Muscle Function and Subsequent Recovery Strategy," IJERPH, MDPI, vol. 18(9), pages 1-15, April.

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