TY - JOUR
T1 - Exercise training at and above the lactate threshold in previously untrained women
AU - Weltman, A.
AU - Seip, R. L.
AU - Snead, D.
AU - Weltman, J. Y.
AU - Haskvitz, E. M.
AU - Evans, W. S.
AU - Veldhuis, J. D.
AU - Rogol, A. D.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1992
Y1 - 1992
N2 - We examined the effects of training at and above the lactate threshold in previously untrained women. Twenty-four untrained eumenorrheic women (age = 31.3±4.0 yrs, wt = 66.2±7.6 kg, ht = 166.4±5.8 cm) were assessed at baseline [during days 1-3 of the menstrual cycle (MC)] and every 4 MC after that (for 1 year) for V̇O2 and velocity (V) at LT, fixed blood lactate concentrations (FBLC) of 2.0, 2.5, and 4.0 mM, and Max. Subjects were assigned to control (C, n = 7), at LT @ LT, trained 6 days/week at the velocity associated with LT, n = 9) or above LT (> LT, trained 3 days/week at the velocity midway between V LT and V Max and 3 days/week at V LT, n = 8) groups. Exercise prescriptions were adjusted after each assessment and each group progressed similarly in weekly mileage. No between group differences were observed before training. After training the > LT group had significantly higher values than the C and @ LT groups for LT (p < 0.05). For FBLC of 2.0, 2.5, and 4.0 mM and Max, the > LT group values were greater than the C group (p < 0.05). No differences were observed after training between the @ LT and C groups. Although the > LT group had higher V̇O2 and V Max values than the @ LT group after training, these differences were not statistically significant. An interaction was observed with the increase in V~2 and V in the > LT group being greater than the @ LT and C groups for LT and FBLC of 2.0, 2.5, and 4.0 mM and greater than the C group for Max (p < 0.05). Within group analysis revealed that both training groups showed similar increases in V̇O2 and V at LT, FBLC of 2.0 and 2.5 mM from baseline to MC 4 (p < 0.05). At MC 8 and 12 the > LT group continued to increase V̇O2 and V with no further change observed in the @ LT group (p < 0.05). The present data suggest that during the first 4 months of training, training at or above the LT results in similar improvements in V̇O2 and V at LT, and FBLC of 2.0 and 2.5 mM. However, for continued improvement, in these and other parameters, some training must be above LT.
AB - We examined the effects of training at and above the lactate threshold in previously untrained women. Twenty-four untrained eumenorrheic women (age = 31.3±4.0 yrs, wt = 66.2±7.6 kg, ht = 166.4±5.8 cm) were assessed at baseline [during days 1-3 of the menstrual cycle (MC)] and every 4 MC after that (for 1 year) for V̇O2 and velocity (V) at LT, fixed blood lactate concentrations (FBLC) of 2.0, 2.5, and 4.0 mM, and Max. Subjects were assigned to control (C, n = 7), at LT @ LT, trained 6 days/week at the velocity associated with LT, n = 9) or above LT (> LT, trained 3 days/week at the velocity midway between V LT and V Max and 3 days/week at V LT, n = 8) groups. Exercise prescriptions were adjusted after each assessment and each group progressed similarly in weekly mileage. No between group differences were observed before training. After training the > LT group had significantly higher values than the C and @ LT groups for LT (p < 0.05). For FBLC of 2.0, 2.5, and 4.0 mM and Max, the > LT group values were greater than the C group (p < 0.05). No differences were observed after training between the @ LT and C groups. Although the > LT group had higher V̇O2 and V Max values than the @ LT group after training, these differences were not statistically significant. An interaction was observed with the increase in V~2 and V in the > LT group being greater than the @ LT and C groups for LT and FBLC of 2.0, 2.5, and 4.0 mM and greater than the C group for Max (p < 0.05). Within group analysis revealed that both training groups showed similar increases in V̇O2 and V at LT, FBLC of 2.0 and 2.5 mM from baseline to MC 4 (p < 0.05). At MC 8 and 12 the > LT group continued to increase V̇O2 and V with no further change observed in the @ LT group (p < 0.05). The present data suggest that during the first 4 months of training, training at or above the LT results in similar improvements in V̇O2 and V at LT, and FBLC of 2.0 and 2.5 mM. However, for continued improvement, in these and other parameters, some training must be above LT.
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U2 - 10.1055/s-2007-1021263
DO - 10.1055/s-2007-1021263
M3 - Article
C2 - 1601562
AN - SCOPUS:0026553064
SN - 0172-4622
VL - 13
SP - 257
EP - 263
JO - International Journal of Sports Medicine
JF - International Journal of Sports Medicine
IS - 3
ER -