Catecholamine responses to high intensity cycle ergometer exercise: body mass or body composition?

J.S. Baker, D.M. Bailey, J. Dutton, B. Davies

Research output: Contribution to journalArticle

Abstract

The purpose of this study was to compare the sympathoadrenergic and metabolic responses following 30 s of maximal high intensity cycle ergometry exercise when cradle resistive forces were derived from total-body mass (TBM) or fat-free mass (FFM). Increases in peak power output (PPO) and pedal velocity were recorded when resistive forces reflected FFM (953±114 Wvs 1020±134 W; 134±8 rpmvs 141±7 rpm;P<0.05). No differences were observed between mean power output (MPO), fatigue index (FI%), work done (WD) or heart rate (HR) when the TBM and FFM protocols were compared. There were no differences between the TBM and FFM protocols for adrenaline (A), noradrenaline (NA) or blood lactate concentrations ([La−]B) recorded at rest, immediately post or 24 h post exercise. However, increases in blood concentrations of A and NA (P<0.05) were recorded for both the TBM and FFM protocol immediately post exercise. Significant correlations (P<0.05) were recorded between PPOs, immediate post-exercise NA and [La−]B for both the TBM and FFM protocols. [La−]B levels were also significantly elevated (P<0.01) immediately post exercise for both the TBM and FFM protocols. The results from this study suggest that greater peak power outputs are obtainable with no subsequent differences in neurophysiological or metabolic stress as determined by plasma A, NA and [La−]B concentrations when resistive forces reflect FFM and not TBM during loading procedures. The findings also indicate that immediate post exercise concentrations return to resting levels 24 h post exercise.
Original languageEnglish
Pages (from-to)77-83
Number of pages7
JournalJournal of Physiology and Biochemistry
Volume59
Issue number2
DOIs
Publication statusPublished - 2003
Externally publishedYes

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Exercise equipment
Body Composition
Catecholamines
Fats
Chemical analysis
Norepinephrine
Blood
Ergometry
Polyphenylene oxides
Physiological Stress
Epinephrine
Fatigue
Foot
Lactic Acid
Heart Rate
Fatigue of materials
Plasmas

Keywords

  • optimised power output
  • fat-free mass
  • total-body mass

Cite this

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title = "Catecholamine responses to high intensity cycle ergometer exercise: body mass or body composition?",
abstract = "The purpose of this study was to compare the sympathoadrenergic and metabolic responses following 30 s of maximal high intensity cycle ergometry exercise when cradle resistive forces were derived from total-body mass (TBM) or fat-free mass (FFM). Increases in peak power output (PPO) and pedal velocity were recorded when resistive forces reflected FFM (953±114 Wvs 1020±134 W; 134±8 rpmvs 141±7 rpm;P<0.05). No differences were observed between mean power output (MPO), fatigue index (FI{\%}), work done (WD) or heart rate (HR) when the TBM and FFM protocols were compared. There were no differences between the TBM and FFM protocols for adrenaline (A), noradrenaline (NA) or blood lactate concentrations ([La−]B) recorded at rest, immediately post or 24 h post exercise. However, increases in blood concentrations of A and NA (P<0.05) were recorded for both the TBM and FFM protocol immediately post exercise. Significant correlations (P<0.05) were recorded between PPOs, immediate post-exercise NA and [La−]B for both the TBM and FFM protocols. [La−]B levels were also significantly elevated (P<0.01) immediately post exercise for both the TBM and FFM protocols. The results from this study suggest that greater peak power outputs are obtainable with no subsequent differences in neurophysiological or metabolic stress as determined by plasma A, NA and [La−]B concentrations when resistive forces reflect FFM and not TBM during loading procedures. The findings also indicate that immediate post exercise concentrations return to resting levels 24 h post exercise.",
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author = "J.S. Baker and D.M. Bailey and J. Dutton and B. Davies",
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language = "English",
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Catecholamine responses to high intensity cycle ergometer exercise : body mass or body composition? / Baker, J.S.; Bailey, D.M.; Dutton, J.; Davies, B.

In: Journal of Physiology and Biochemistry, Vol. 59, No. 2, 2003, p. 77-83.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Catecholamine responses to high intensity cycle ergometer exercise

T2 - body mass or body composition?

AU - Baker, J.S.

AU - Bailey, D.M.

AU - Dutton, J.

AU - Davies, B.

PY - 2003

Y1 - 2003

N2 - The purpose of this study was to compare the sympathoadrenergic and metabolic responses following 30 s of maximal high intensity cycle ergometry exercise when cradle resistive forces were derived from total-body mass (TBM) or fat-free mass (FFM). Increases in peak power output (PPO) and pedal velocity were recorded when resistive forces reflected FFM (953±114 Wvs 1020±134 W; 134±8 rpmvs 141±7 rpm;P<0.05). No differences were observed between mean power output (MPO), fatigue index (FI%), work done (WD) or heart rate (HR) when the TBM and FFM protocols were compared. There were no differences between the TBM and FFM protocols for adrenaline (A), noradrenaline (NA) or blood lactate concentrations ([La−]B) recorded at rest, immediately post or 24 h post exercise. However, increases in blood concentrations of A and NA (P<0.05) were recorded for both the TBM and FFM protocol immediately post exercise. Significant correlations (P<0.05) were recorded between PPOs, immediate post-exercise NA and [La−]B for both the TBM and FFM protocols. [La−]B levels were also significantly elevated (P<0.01) immediately post exercise for both the TBM and FFM protocols. The results from this study suggest that greater peak power outputs are obtainable with no subsequent differences in neurophysiological or metabolic stress as determined by plasma A, NA and [La−]B concentrations when resistive forces reflect FFM and not TBM during loading procedures. The findings also indicate that immediate post exercise concentrations return to resting levels 24 h post exercise.

AB - The purpose of this study was to compare the sympathoadrenergic and metabolic responses following 30 s of maximal high intensity cycle ergometry exercise when cradle resistive forces were derived from total-body mass (TBM) or fat-free mass (FFM). Increases in peak power output (PPO) and pedal velocity were recorded when resistive forces reflected FFM (953±114 Wvs 1020±134 W; 134±8 rpmvs 141±7 rpm;P<0.05). No differences were observed between mean power output (MPO), fatigue index (FI%), work done (WD) or heart rate (HR) when the TBM and FFM protocols were compared. There were no differences between the TBM and FFM protocols for adrenaline (A), noradrenaline (NA) or blood lactate concentrations ([La−]B) recorded at rest, immediately post or 24 h post exercise. However, increases in blood concentrations of A and NA (P<0.05) were recorded for both the TBM and FFM protocol immediately post exercise. Significant correlations (P<0.05) were recorded between PPOs, immediate post-exercise NA and [La−]B for both the TBM and FFM protocols. [La−]B levels were also significantly elevated (P<0.01) immediately post exercise for both the TBM and FFM protocols. The results from this study suggest that greater peak power outputs are obtainable with no subsequent differences in neurophysiological or metabolic stress as determined by plasma A, NA and [La−]B concentrations when resistive forces reflect FFM and not TBM during loading procedures. The findings also indicate that immediate post exercise concentrations return to resting levels 24 h post exercise.

KW - optimised power output

KW - fat-free mass

KW - total-body mass

U2 - 10.1007/BF03179873

DO - 10.1007/BF03179873

M3 - Article

VL - 59

SP - 77

EP - 83

JO - Journal of Physiology and Biochemistry

JF - Journal of Physiology and Biochemistry

SN - 1138-7548

IS - 2

ER -