Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Maximal exercise tolerance after induced alkalosis.

A Katz, D L Costill, D S King

    International Journal of Sports Medicine
    |April 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    A novel retro-inverso gonadotropin-releasing hormone (GnRH) immunogen elicits antibodies that neutralize the activity of native GnRH.

    Endocrinology·2003
    Same author

    Noninvasive native fluorescence imaging of head and neck tumors.

    Technology in cancer research & treatment·2003
    Same author

    Variation in the DCP1 gene, encoding the angiotensin converting enzyme ACE, is not associated with increased susceptibility to Alzheimer's disease.

    Psychiatric genetics·2003
    Same author

    Therapeutic potential of curcumin in human prostate cancer-I. curcumin induces apoptosis in both androgen-dependent and androgen-independent prostate cancer cells.

    Prostate cancer and prostatic diseases·2002
    Same author

    Interpretation of spring recession curves.

    Ground water·2002
    Same author

    Ideal vitamin C intake.

    BioFactors (Oxford, England)·2002

    Sodium bicarbonate (NaHCO3) ingestion did not improve exercise duration in healthy males but enhanced lactate efflux and faster acid-base recovery. Alkalosis may benefit repeated high-intensity exercise bouts.

    Area of Science:

    • Exercise Physiology
    • Sports Nutrition
    • Biochemistry

    Background:

    • Alkaline agents like sodium bicarbonate (NaHCO3) are explored for ergogenic effects in high-intensity exercise.
    • Understanding the impact of NaHCO3 on acid-base balance and performance during intense exercise is crucial for athletes and coaches.

    Purpose of the Study:

    • To investigate the effects of NaHCO3 ingestion on exercise performance and physiological responses during a single bout of intense cycling to exhaustion.
    • To determine if NaHCO3 enhances lactate production or affects acid-base status during recovery.

    Main Methods:

    • Eight healthy males completed two cycling tests to exhaustion at 125% VO2 max.
    • Participants ingested either 0.2 g NaHCO3/kg body weight or a placebo (NaCl) 1 hour prior to exercise.

    Related Experiment Videos

  • Blood pH, bicarbonate (HCO3-), base excess (BE), lactate (LA), and oxygen consumption (VO2) were measured pre-exercise, during exercise, and during recovery.

    • Main Results:

    • No significant differences were observed in cycling time to exhaustion or total recovery VO2 between NaHCO3 and placebo conditions.
    • Blood pH, HCO3-, and BE were significantly higher, and the hydrogen ion to lactate ratio was lower during recovery in the NaHCO3 trial.
    • Blood lactate levels were greater during the latter part of recovery in the NaHCO3 trial, suggesting enhanced lactate efflux rather than increased production.

    Conclusions:

    • Single-bout ergogenic effects of NaHCO3 at this dosage and intensity were not evident in terms of exercise duration.
    • NaHCO3 ingestion appears to enhance lactate efflux and accelerate the restoration of acid-base balance post-exercise.
    • These findings suggest that NaHCO3 may be more beneficial for repeated high-intensity exercise bouts rather than a single intense effort.