Abstract

ABSTRACTThe purpose of this study was to examine selected physiological responses during a single game of baseball pitching. Six college-age men with varsity pitching experience at the collegiate level participated in the study. Subjects pitched a simulated game during which heart rate (HR), blood lactate (LA), serum glucose (SG), free fatty acid (FFA) and oxygen consumption (JOURNAL/jscr/04.02/00124278-199202000-00003/ENTITY_OV0312/v/2017-07-20T235126Z/r/image-pngO2) were measured. Serum creatine kinase (CK) and lactate dehydrogenase (LDH) were analyzed 24 hours after exercise as an indicator of skeletal muscle damage. HR exhibited a quadratic effect (p ≤ 0.01). There was no change from pre-exercise values for LA or SG. FFA did increase significantly throughout the game (p ≤ 0.01).JOURNAL/jscr/04.02/00124278-199202000-00003/ENTITY_OV0312/v/2017-07-20T235126Z/r/image-pngO2exhibited a quadratic effect during each inning (p ≤ 0.01). Values ranged from 4.9 ml·kg−1·min−1at rest to 20.6 ml·kg−1min−1 during pitching. CK and LDH were significantly elevated 24 hours after exercise. Results indicate that the physiological responses which occur during the pitching of a game correspond with an intensity equal to continuous exercise at 45 percent of JOURNAL/jscr/04.02/00124278-199202000-00003/ENTITY_OV0312/v/2017-07-20T235126Z/r/image-pngO2 max. The increase of muscle enzymes 24 hours after exercise may indicate muscle damage, and warrants further investigation.

The purpose of this study was to examine selected physiological responses during a single game of baseball pitching. Six college-age men with varsity pitching experience at the collegiate level participated in the study. Subjects pitched a simulated game during which heart rate (HR), blood lactate (LA), serum glucose (SG), free fatty acid (FFA) and oxygen consumption (JOURNAL/jscr/04.02/00124278-199202000-00003/ENTITY_OV0312/v/2017-07-20T235126Z/r/image-pngO2) were measured. Serum creatine kinase (CK) and lactate dehydrogenase (LDH) were analyzed 24 hours after exercise as an indicator of skeletal muscle damage. HR exhibited a quadratic effect (p ≤ 0.01). There was no change from pre-exercise values for LA or SG. FFA did increase significantly throughout the game (p ≤ 0.01).JOURNAL/jscr/04.02/00124278-199202000-00003/ENTITY_OV0312/v/2017-07-20T235126Z/r/image-pngO2exhibited a quadratic effect during each inning (p ≤ 0.01). Values ranged from 4.9 ml·kg−1·min−1at rest to 20.6 ml·kg−1min−1 during pitching. CK and LDH were significantly elevated 24 hours after exercise. Results indicate that the physiological responses which occur during the pitching of a game correspond with an intensity equal to continuous exercise at 45 percent of JOURNAL/jscr/04.02/00124278-199202000-00003/ENTITY_OV0312/v/2017-07-20T235126Z/r/image-pngO2 max. The increase of muscle enzymes 24 hours after exercise may indicate muscle damage, and warrants further investigation.

© 1992 National Strength and Conditioning Association