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GAZZETTA MEDICA ITALIANA ARCHIVIO PER LE SCIENZE MEDICHE
A Journal on Internal Medicine and Pharmacology
Indexed/Abstracted in: BIOSIS Previews, EMBASE, Scopus, Emerging Sources Citation Index
Gazzetta Medica Italiana Archivio per le Scienze Mediche 2012 October;171(5):599-603
Endurance training does not change the relative intensity at lactate threshold in elderly
Ribeiro Da Mota G. 1, 3, Baldissera V. 4, Marocolo Júnior M. 1, Barbosa Neto O. 1, Guimarães Faleiros A. C. 2, De Oliveira A. 5, Ricardo Lopes C. 6, 8, Castardeli E. 7, Gobbi S. 3
1 Department of Sport Sciences, Federal University of Triângulo Mineiro, Uberaba, Brazi;
2 Department of Structural Biology, Federal University of Triângulo Mineiro, Uberaba, Brazil;
3 Post-Graduation Program in Physical Education, São Paulo State University, Rio Claro, Brazil;
4 Department of Physiological Sciences, Federal University of São Carlos, Brazil;
5 Department of Sciences of Physical Education and Health, Federal University of São João del Rei, Brazil;
6 Post-Graduation Program in Physical Education, Methodist University of Piracicaba, Brazil;
7 Department of Sports, Federal University of Espírito Santo, Vitória, Brazil;
8 Adventist College of Hortolândia, Brazil
Aim. The aim of the study was to verify whether endurance training may induce changes on the percentage of peak heart rate (% peak HR) at the lactate threshold (LT) intensity in untrained elderly.
Methods. Sixteen healthy men (64.3 ± 4.1 yrs) underwent an incremental test on cycloergometer to determine the LT and the corresponding % peak HR at LT intensity. Afterwards, they were randomly distributed into two groups (n = 8 each): endurance training (ET) and control (C). The ET exercised 3 days a week for 12 weeks. The training session was divided into warm-up (5 min at 50% of LT;), a main part, and a cool-down (5 min 50% below of LT). The main part had a gradual increased volume through the weeks of 2 min. The initial volume on the 1st week was 25 min reaching 47 min at the 12th week. The relative intensity was kept constant (90 to 100% of LT).
Results. After 12 weeks, the % peak HR at LT did not change significantly for both groups P > 0.05 (ET 82.9 ± 4.1 vs. 82.5 ± 3.4 and C 80.2 ± 7.1 vs. 81.8 ± 7.1).
Conclusion. We conclude that endurance training proposed does not change the relative intensity at LT in elderly.