Dynamics of the Metabolic Response During a Competitive 100-M Freestyle in Elite Male Swimmers

Philippe Hellard, Robin Pla, Ferran A Rodríguez, David Simbana, David B Pyne

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    PURPOSE: To compare the dynamics of V̇O2, blood lactate ([La]b), total energy expenditure (Etot), and contributions of the aerobic (Eaer), alactic anaerobic (Ean,al) and lactic anaerobic (Ean,lac) metabolic energy pathways over four consecutive 25-m laps (L0-25, L25-50, L50-75, L75-100) of a 100-m maximal freestyle swim.

    METHODS: Elite swimmers comprising 26 juniors (16 ± 1 y) and 23 seniors (24 ± 5 y) performed 100 m at maximal speed, and then three trials (25, 50 and 75 m) at the same pace as that of the 100 m. [La]bwas collected and V̇O2was measured 20 s post-exercise using a Cosmed K4 b2 analyser.

    RESULTS: The estimated energetic contributions (%Etot) for the 100-m trial were Eaer: 51 ± 8%, Ean,al: 18 ± 2% and Ean,lac: 31 ± 9% (mean ± SD). V̇O2increased from L0-25to L25-50: 3.5 (3.4-3.7) to 4.2 (4.0-4.3) l·min-1[mean (90% CI)] and then stabilized: 4.1 (3.9-4.3), 4.2 (4.0-4.4) in the 2nd50-m. Etot(138 ±18, 168 ± 26 kJ; juniors, seniors), Ean,al(27 ± 3, 30 ± 3 kJ), and Ean,lac(38 ± 12, 62 ± 24 kJ) were 11-58% higher in seniors. Faster swimmers (n=26) had higher V̇O2: 4.6 (4.4-4.8) vs. 3.9 (3.6-4.2 l·min-1) and Eaerpower was associated with fast performances (p<0.001).

    CONCLUSION: Faster swimmers were characterized by higher V̇O2and less time to reach the highest V̇O2at ~50 m of the 100-m swim. Anaerobic qualities become more important with age.

    Original languageEnglish
    Pages (from-to)1011-1020
    JournalInternational Journal of Sports Physiology and Performance
    Volume13
    Issue number8
    Early online date21 Feb 2018
    DOIs
    Publication statusPublished - Sep 2018

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    Milk
    Lactic Acid
    Metabolic Networks and Pathways
    Energy Metabolism

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    Hellard, Philippe ; Pla, Robin ; Rodríguez, Ferran A ; Simbana, David ; Pyne, David B. / Dynamics of the Metabolic Response During a Competitive 100-M Freestyle in Elite Male Swimmers. In: International Journal of Sports Physiology and Performance. 2018 ; Vol. 13, No. 8. pp. 1011-1020.
    @article{266a16a41bcc46308e214447f7958b88,
    title = "Dynamics of the Metabolic Response During a Competitive 100-M Freestyle in Elite Male Swimmers",
    abstract = "PURPOSE: To compare the dynamics of V̇O2, blood lactate ([La]b), total energy expenditure (Etot), and contributions of the aerobic (Eaer), alactic anaerobic (Ean,al) and lactic anaerobic (Ean,lac) metabolic energy pathways over four consecutive 25-m laps (L0-25, L25-50, L50-75, L75-100) of a 100-m maximal freestyle swim.METHODS: Elite swimmers comprising 26 juniors (16 ± 1 y) and 23 seniors (24 ± 5 y) performed 100 m at maximal speed, and then three trials (25, 50 and 75 m) at the same pace as that of the 100 m. [La]bwas collected and V̇O2was measured 20 s post-exercise using a Cosmed K4 b2 analyser.RESULTS: The estimated energetic contributions ({\%}Etot) for the 100-m trial were Eaer: 51 ± 8{\%}, Ean,al: 18 ± 2{\%} and Ean,lac: 31 ± 9{\%} (mean ± SD). V̇O2increased from L0-25to L25-50: 3.5 (3.4-3.7) to 4.2 (4.0-4.3) l·min-1[mean (90{\%} CI)] and then stabilized: 4.1 (3.9-4.3), 4.2 (4.0-4.4) in the 2nd50-m. Etot(138 ±18, 168 ± 26 kJ; juniors, seniors), Ean,al(27 ± 3, 30 ± 3 kJ), and Ean,lac(38 ± 12, 62 ± 24 kJ) were 11-58{\%} higher in seniors. Faster swimmers (n=26) had higher V̇O2: 4.6 (4.4-4.8) vs. 3.9 (3.6-4.2 l·min-1) and Eaerpower was associated with fast performances (p<0.001).CONCLUSION: Faster swimmers were characterized by higher V̇O2and less time to reach the highest V̇O2at ~50 m of the 100-m swim. Anaerobic qualities become more important with age.",
    keywords = "swimming, sprint, energy contribution, growth",
    author = "Philippe Hellard and Robin Pla and Rodr{\'i}guez, {Ferran A} and David Simbana and Pyne, {David B}",
    year = "2018",
    month = "9",
    doi = "10.1123/ijspp.2017-0597",
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    Dynamics of the Metabolic Response During a Competitive 100-M Freestyle in Elite Male Swimmers. / Hellard, Philippe; Pla, Robin; Rodríguez, Ferran A; Simbana, David; Pyne, David B.

    In: International Journal of Sports Physiology and Performance, Vol. 13, No. 8, 09.2018, p. 1011-1020.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Dynamics of the Metabolic Response During a Competitive 100-M Freestyle in Elite Male Swimmers

    AU - Hellard, Philippe

    AU - Pla, Robin

    AU - Rodríguez, Ferran A

    AU - Simbana, David

    AU - Pyne, David B

    PY - 2018/9

    Y1 - 2018/9

    N2 - PURPOSE: To compare the dynamics of V̇O2, blood lactate ([La]b), total energy expenditure (Etot), and contributions of the aerobic (Eaer), alactic anaerobic (Ean,al) and lactic anaerobic (Ean,lac) metabolic energy pathways over four consecutive 25-m laps (L0-25, L25-50, L50-75, L75-100) of a 100-m maximal freestyle swim.METHODS: Elite swimmers comprising 26 juniors (16 ± 1 y) and 23 seniors (24 ± 5 y) performed 100 m at maximal speed, and then three trials (25, 50 and 75 m) at the same pace as that of the 100 m. [La]bwas collected and V̇O2was measured 20 s post-exercise using a Cosmed K4 b2 analyser.RESULTS: The estimated energetic contributions (%Etot) for the 100-m trial were Eaer: 51 ± 8%, Ean,al: 18 ± 2% and Ean,lac: 31 ± 9% (mean ± SD). V̇O2increased from L0-25to L25-50: 3.5 (3.4-3.7) to 4.2 (4.0-4.3) l·min-1[mean (90% CI)] and then stabilized: 4.1 (3.9-4.3), 4.2 (4.0-4.4) in the 2nd50-m. Etot(138 ±18, 168 ± 26 kJ; juniors, seniors), Ean,al(27 ± 3, 30 ± 3 kJ), and Ean,lac(38 ± 12, 62 ± 24 kJ) were 11-58% higher in seniors. Faster swimmers (n=26) had higher V̇O2: 4.6 (4.4-4.8) vs. 3.9 (3.6-4.2 l·min-1) and Eaerpower was associated with fast performances (p<0.001).CONCLUSION: Faster swimmers were characterized by higher V̇O2and less time to reach the highest V̇O2at ~50 m of the 100-m swim. Anaerobic qualities become more important with age.

    AB - PURPOSE: To compare the dynamics of V̇O2, blood lactate ([La]b), total energy expenditure (Etot), and contributions of the aerobic (Eaer), alactic anaerobic (Ean,al) and lactic anaerobic (Ean,lac) metabolic energy pathways over four consecutive 25-m laps (L0-25, L25-50, L50-75, L75-100) of a 100-m maximal freestyle swim.METHODS: Elite swimmers comprising 26 juniors (16 ± 1 y) and 23 seniors (24 ± 5 y) performed 100 m at maximal speed, and then three trials (25, 50 and 75 m) at the same pace as that of the 100 m. [La]bwas collected and V̇O2was measured 20 s post-exercise using a Cosmed K4 b2 analyser.RESULTS: The estimated energetic contributions (%Etot) for the 100-m trial were Eaer: 51 ± 8%, Ean,al: 18 ± 2% and Ean,lac: 31 ± 9% (mean ± SD). V̇O2increased from L0-25to L25-50: 3.5 (3.4-3.7) to 4.2 (4.0-4.3) l·min-1[mean (90% CI)] and then stabilized: 4.1 (3.9-4.3), 4.2 (4.0-4.4) in the 2nd50-m. Etot(138 ±18, 168 ± 26 kJ; juniors, seniors), Ean,al(27 ± 3, 30 ± 3 kJ), and Ean,lac(38 ± 12, 62 ± 24 kJ) were 11-58% higher in seniors. Faster swimmers (n=26) had higher V̇O2: 4.6 (4.4-4.8) vs. 3.9 (3.6-4.2 l·min-1) and Eaerpower was associated with fast performances (p<0.001).CONCLUSION: Faster swimmers were characterized by higher V̇O2and less time to reach the highest V̇O2at ~50 m of the 100-m swim. Anaerobic qualities become more important with age.

    KW - swimming

    KW - sprint

    KW - energy contribution

    KW - growth

    U2 - 10.1123/ijspp.2017-0597

    DO - 10.1123/ijspp.2017-0597

    M3 - Article

    VL - 13

    SP - 1011

    EP - 1020

    JO - International Journal of Sports Physiology and Performance

    JF - International Journal of Sports Physiology and Performance

    SN - 1555-0265

    IS - 8

    ER -