The relationship between ventilatory and lactate thresholds in boys and men.
The relationship between ventilatory (VT) and lactate threshold (LT) in 8 boys (11.1 +/- 0.7 yrs) and 9 men (24.0 +/- 3.3 yrs) with similar peak VO(2) levels was assessed. Percent peak VO(2) at VT and LT were higher (P < 0.05) in the boys (67.9 +/- 2.6% and 63.9 +/- 5.0%, respectively) compared with men (59.0 +/- 3.2% and 54.8 +/- 2.7%, respectively). VO(2) (mL.kg(-1).min(-1)) at VT was higher (P < 0.05) and at LT tended to be higher in boys. Correlations between VT and LT were r = 0.95 for VO(2) (mL.kg(-1).min(-1)) and r = 0.82 for % peak VO(2) (P < 0.05) in boys and r = 0.87 (P < 0.05) and r = 0.60 (P > 0.05), respectively, in men. The mechanisms mediating VT and LT in children are not established fully and warrant further study.
Anderson
Cindy S
CS
Human Performance Laboratory, Ball State University, Muncie, Indiana, USA.
Mahon
Anthony D
AD
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D015308:Anaerobic Threshold; D002648:Child; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D007773:Lactates / Q000097:blood*; D008297:Male; D010101:Oxygen Consumption; D010807:Physical Endurance; D010809:Physical Fitness / Q000502:physiology; D011446:Prospective Studies; D011659:Pulmonary Gas Exchange; D012123:Pulmonary Ventilation / Q000502:physiology*
D007773:Lactates