97 episodes

Your weekly "Snippit" of applied sports science

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    • Health & Fitness
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Your weekly "Snippit" of applied sports science

    Snippit 97 ► Recommendations for Athlete Immune Health

    Snippit 97 ► Recommendations for Athlete Immune Health

    Snippit is made possible by listeners like you.Please help support the podcast:► https://www.patreon.com/snippitscience  
     





     


    Review

    Eur J Sport Sci


    2018 Jul;18(6):820-831.




    doi: 10.1080/17461391.2018.1449895. Epub 2018 Apr 11.
    Recommendations to maintain immune health in athletes


    Neil P Walsh





    College of Health and Behavioural Sciences , Bangor University , Bangor , UK.



    PMID: 29637836
     
    DOI: 10.1080/17461391.2018.1449895


    Abstract

    Numerous studies over the last 35 years report an increase in upper respiratory infection (URI) symptoms in athletes during periods of heavy training and competition. Challenges athletes face such as heavy exercise and life stress influence immune function via activation of the hypothalamic-pituitary-adrenal axis and the sympathetic nervous system and the resulting immunoregulatory hormones. Both innate and acquired immunity are often reported to decrease transiently in the hours after heavy exertion, typically 15-70%: prolonged heavy training sessions in particular have been shown to decrease immune function; potentially providing an 'open window' for opportunistic infections. Whether the observed changes in immunity with acute strenuous exercise or periods of heavy training account for the increased susceptibility to URI symptoms remains contentious. Nevertheless, there is little doubt that URI symptoms hinder athletic training and competition; underpinning the need to identify the prominent risk factors and appropriate countermeasures. Recent studies have identified prominent risk factors, including: intensified training in the winter; long-haul travel; low energy availability; high levels of psychological stress and anxiety; and depression. Given the shared pathways and effector limbs for the body's response to physical and psychological challenges, it is logical that psychological strain influences immunity and illness incidence in athletes under heavy training; indeed, stress and anxiety have recently been shown to modify the immune response to exercise. This mini-review provides new insights and evidence-based recommendations for coping with the various challenges that athletes encounter on immune health, including: heavy exercise; life stress; sleep disruption; environmental extremes and nutritional deficits.
     

    Keywords: Exercise; diet; immune; infection; sleep; stress; supplement.

     
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    • 16 min
    Snippit 96 ► Immunonutrition - Athletes & Elderly

    Snippit 96 ► Immunonutrition - Athletes & Elderly

    Snippit is made possible by listeners like you.Please help support the podcast:► https://www.patreon.com/snippitscience  
     
     
     
    Consensus Statement Immunonutrition and Exercise.


     
    Bermon, S, Castell, LM, Calder, PC, Bishop, NC, Blomstrand, E, Mooren, FC, Krüger, K, Kavazis, AN, Quindry, JC, Senchina, DS, Nieman, DC, Gleeson, M, Pyne, DB, Kitic, CM, Close, GL, Larson-Meyer, DE, Marcos, A, Meydani, SN, Walsh, NP and Nagatomi, R (2017) Consensus Statement Immunonutrition and Exercise. Exercise Immunology Review, 23. pp. 8-50. ISSN 1077-5552
     
    Abstract
     
    In this consensus statement on immunonutrition and exercise, a panel of knowledgeable contributors from across the globe provides a consensus of updated science, including the background, the aspects for which a consensus actually exists, the controversies and, when possible, suggested directions for future research.


     
    Again, thank you to our podcast sponsor EliteForm, which brings together cutting edge sports science technologies.  Please visit https://eliteform.com and check out their products, StrengthPlanner and PowerTracker.
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    • 9 min
    Snippit 95 ► Immunonutrition - Micronutrients & Supplements

    Snippit 95 ► Immunonutrition - Micronutrients & Supplements

    Snippit is made possible by listeners like you.Please help support the podcast:► https://www.patreon.com/snippitscience  
     
     
     
    Consensus Statement Immunonutrition and Exercise.


     
    Bermon, S, Castell, LM, Calder, PC, Bishop, NC, Blomstrand, E, Mooren, FC, Krüger, K, Kavazis, AN, Quindry, JC, Senchina, DS, Nieman, DC, Gleeson, M, Pyne, DB, Kitic, CM, Close, GL, Larson-Meyer, DE, Marcos, A, Meydani, SN, Walsh, NP and Nagatomi, R (2017) Consensus Statement Immunonutrition and Exercise. Exercise Immunology Review, 23. pp. 8-50. ISSN 1077-5552
     
    Abstract
     
    In this consensus statement on immunonutrition and exercise, a panel of knowledgeable contributors from across the globe provides a consensus of updated science, including the background, the aspects for which a consensus actually exists, the controversies and, when possible, suggested directions for future research.


     
    Again, thank you to our podcast sponsor EliteForm, which brings together cutting edge sports science technologies.  Please visit https://eliteform.com and check out their products, StrengthPlanner and PowerTracker.
    Thanks again for listening.  Please check out some of our other content below.
     
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    • 20 min
    Snippit 94 ► Immunonutrition - Macronutrients

    Snippit 94 ► Immunonutrition - Macronutrients

    Snippit is made possible by listeners like you.Please help support the podcast:► https://www.patreon.com/snippitscience  
     

     
    Consensus Statement Immunonutrition and Exercise.


     
    Bermon, S, Castell, LM, Calder, PC, Bishop, NC, Blomstrand, E, Mooren, FC, Krüger, K, Kavazis, AN, Quindry, JC, Senchina, DS, Nieman, DC, Gleeson, M, Pyne, DB, Kitic, CM, Close, GL, Larson-Meyer, DE, Marcos, A, Meydani, SN, Walsh, NP and Nagatomi, R (2017) Consensus Statement Immunonutrition and Exercise. Exercise Immunology Review, 23. pp. 8-50. ISSN 1077-5552
     
    Abstract
     
    In this consensus statement on immunonutrition and exercise, a panel of knowledgeable contributors from across the globe provides a consensus of updated science, including the background, the aspects for which a consensus actually exists, the controversies and, when possible, suggested directions for future research.


     
    Again, thank you to our podcast sponsor EliteForm, which brings together cutting edge sports science technologies.  Please visit https://eliteform.com and check out their products, StrengthPlanner and PowerTracker.
    Thanks again for listening.  Please check out some of our other content below.
     
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    • 21 min
    Snippit 93 ► Exercise & Your Immune System

    Snippit 93 ► Exercise & Your Immune System

    Snippit is made possible by listeners like you.Please help support the podcast:► https://www.patreon.com/snippitscience  
     

     

    Exercise immunology: involved components and varieties in different types of physical exercise

    Samuel Inkabi, Giggil Pushpamithran, Paul Richter, Kwadwo Attakora
    Published 2017
    Journal of Life Sciences


    Physical exercise induces modifications in the immune system influencing either positively or negatively on health depending on its frequency, duration, and intensity. Acute or moderate physical exercise increases appreciably the immune cells, including cytokine levels while decreasing other components like NK cells, leading to a stronger response to pathogens as well as decreasing liability to allergic reactions. The expression of Toll-like receptors (TLR) is elevated as well, augmenting the positive effect. Exhaustive physical exercise, by contrast, modifies the immune system adversely. This review explores the links between physical exercise, immune cells and cytokines, and the immunological effects that have been studied by the performance of different kinds of physical exercise.

     
    Again, thank you to our podcast sponsor EliteForm, which brings together cutting edge sports science technologies.  Please visit https://eliteform.com and check out their products, StrengthPlanner and PowerTracker.
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    • 15 min
    Snippit 92 ► Isometric Push-up - A valid and reliable upper body strength test

    Snippit 92 ► Isometric Push-up - A valid and reliable upper body strength test

    Snippit is made possible by listeners like you.Please help support the podcast:► https://www.patreon.com/snippitscience  
     
     
     
    J Hum Kinet. 2015 Oct 14;47:189-95. doi: 10.1515/hukin-2015-0074. eCollection 2015 Sep 29.
    Validation and Reliability of a Novel Test of Upper Body Isometric Strength.
    Bellar D, Marcus L, Judge LW.


    School of Kinesiology, University of Louisiana at Lafayette, Lafayette LA.
    School of Physical Education, Sport and Exercise Science, Ball State University, Muncie IN.



    Abstract

    The purpose of the present investigation was to examine the association of a novel test of upper body isometric strength against a 1RM bench press measurement.
    Forty college age adults (n = 20 female, n = 20 male; age 22.8 ± 2.8 years; body height 171.6 ± 10.8 cm; body mass 73.5 ± 16.3 kg; body fat 23.1 ± 5.4%) volunteered for the present investigation. The participants reported to the lab on three occasions. The first visit included anthropometric measurements and familiarization with both the upper body isometric test and bench press exercise. The final visits were conducted in a randomized order, with one being a 1RM assessment on the bench press and the other consisting of three trials of the upper body isometric assessment. For the isometric test, participants were positioned in a "push-up" style position while tethered (stainless steel chain) to a load cell (high frequency) anchored to the ground.
    The peak isometric force was consistent across all three trials (ICC = 0.98) suggesting good reliability. Multiple regression analysis was completed with the predictors: peak isometric force, gender, against the outcome variable 1RM bench press. The analysis resulted in a significant model (r2 = 0.861, p≤0.001) with all predictor variables attaining significance in the model (p

    • 21 min

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