Int J Sports Med 2011; 32(9): 672-676
DOI: 10.1055/s-0031-1275671
Physiology & Biochemistry

© Georg Thieme Verlag KG Stuttgart · New York

The Dmax is Highly Related to Performance in Middle-Aged Females

F. A. Machado1 , S. M. F. de Moraes2 , C. S. Peserico3 , P. V. Mezzaroba3 , W. P. Higino4
  • 1State University of Maringá, Department of Physical Education, Maringá, Brazil
  • 2State University of Maringá, Department of Physiologic Sciences, Maringá, Brazil
  • 3State University of Maringá, Laboratory of Effort Physiology – Department of Physiologic Sciences, Maringá, Brazil
  • 4Catholic University Center Salesiano Auxilium, Department of Physical Education, Lins, Brazil
Further Information

Publication History

accepted after revision March 14, 2011

Publication Date:
11 May 2011 (online)

Abstract

The present study examined whether the running speed at the lactate threshold estimated by the maximal deviation method (LTDmax) is highly correlated and in agreement with 10-km road race performance (S10 km) in middle-aged female runners. Additionally, the LTDmax was compared with the visual detection of the inflection point (LTVisual), the fixed lactate level of 4 mmol.L−1 (LT4) and the peak speed (Speak) in relation to performance. Sixteen middle-aged, recreational female runners performed a discontinuous, incremental treadmill test. The initial speed was set at 7 km.h−1, and this speed was increased every 3 min by 1 km.h−1 with a 30-s rest between the stages used for earlobe capillary blood sample collection. All of the participants took part in the same local 10-km road race, and S10 km mean speed was calculated. The speeds (mean±SD) were 10.5±1.0 (S10 km), 10.5±1.0 (LTVisual), 10.9±0.9 (LTDmax), 11.4±1.3 (LT4) and 13.5±1.1 km.h−1 (Speak). The LTDmax had the narrowest limits of agreement (0.3±0.4 km.h−1) and was the most highly correlated with the S10 km (r=0.98), followed by the Speak (r=0.95), LT4 (r=0.85) and LTVisual (r=0.81). In conclusion, the LTDmax should be more widely used to estimate long-distance performance and to verify improvements in training.

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Correspondence

Dr. Fabiana Andrade Machado

State University of Maringá

Department of Physical Education

Av. Colombo 5790

87.020-900 Maringá

Brazil

Phone: + 55/44/3011 4315

Fax: + 55/44/3011 4470

Email: famachado_uem@hotmail.com