Acute Hormonal Responses to a Single Bout of Heavy Resistance Exercise in Trained Power Lifters and Untrained Men | Zendy

William J. Kraemer | Zendy; Steven J. Fleck | Zendy; Carl M. Maresh | Zendy; Nicholas A. Ratamess | Zendy; Scott E. Gordon | Zendy; Kenneth L. Goetz | Zendy; Everett A. Harman | Zendy; Peter Frykman | Zendy; Jeff S. Volek | Zendy; SCOTT A. MAZZETTI | Zendy; Andrew C. Fry | Zendy; Louis J. Marchitelli | Zendy; John F. Patton | Zendy

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Acute Hormonal Responses to a Single Bout of Heavy Resistance Exercise in Trained Power Lifters and Untrained Men

Author(s) -

William J. Kraemer,

Steven J. Fleck,

Carl M. Maresh,

Nicholas A. Ratamess,

Scott E. Gordon,

Kenneth L. Goetz,

Everett A. Harman,

Peter Frykman,

Jeff S. Volek,

SCOTT A. MAZZETTI,

Andrew C. Fry,

Louis J. Marchitelli,

John F. Patton

Publication year - 1999

Publication title -

canadian journal of applied physiology

Language(s) - English

Resource type - Journals

eISSN - 1543-2718

pISSN - 1066-7814

DOI - 10.1139/h99-034

Subject(s) - medicine , vasopressin , endocrinology , epinephrine , plasma renin activity , angiotensin ii , hormone , norepinephrine , aldosterone , atrial natriuretic peptide , renin–angiotensin system , blood pressure , dopamine

The purpose of this study was to investigate the acute responses of both stress and fluid regulatory hormones to a single bout of resistance exercise in both trained and untrained men. Seven competitive power lifters (PL) and 12 untrained subjects (UT) performed one set of the leg press exercise to exhaustion at 80% of their respective one-repetition maximum. Blood samples were obtained twice prior to exercise (at P1 and P2), immediately postexercise (IP), and at 5 minutes postexercise (5PE). Compared to P1 and P2, plasma epinephrine, norepinephrine, dopamine, atrial peptide, osmolality, and blood lactic acid increased significantly (p < or = 0.05) at IP. Plasma epinephrine, norepinephrine, atrial peptide, and blood lactic acid concentrations remained elevated at 5PE compared to P1 and P2. Plasma renin activity and angiotensin II were significantly elevated at 5PE compared to P1, P2, and IP, and this increase was significantly greater in PL compared to UT at 5PE. These data indicate that an acute bout of resistance exercise dramatically affects secretion of stress and fluid regulatory hormones.

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