Open AccessMethods to Identify the Lactate and Glucose Thresholds During Resistance Exercise for Individuals With Type 2 Diabetes
Author(s) -
Sérgio Rodrigues Moreira,
Gisela Arsa,
Hildeamo Bonifácio Oliveira,
Luciano Ramos de Lima,
Carmen Sílvia Grubert Campbell,
Herbert Gustavo Simões
Publication year - 2008
Publication title -
journal of strength and conditioning research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.569
H-Index - 128
eISSN - 1533-4287
pISSN - 1064-8011
DOI - 10.1519/jsc.0b013e31816eb47c
Subject(s) - earlobe , lactate threshold , medicine , resistance training , type 2 diabetes , zoology , blood lactate , endocrinology , diabetes mellitus , surgery , biology , blood pressure , heart rate
The purpose of this study was to compare different methods to identify the lactate threshold (LT) and glucose threshold (GT) on resistance exercise for individuals with type 2 diabetes. Nine men with type 2 diabetes (47.2 +/- 12.4 years, 87.6 +/- 20.0 kg, 174.9 +/- 5.9 cm, and 22.4 +/- 7.2% body fat) performed incremental tests (ITs) on the leg press (LP) and bench press (BP) at relative intensities of 10, 20, 25, 30, 35, 40, 50, 60, 70, 80, and 90% of one-repetition maximum (1RM) at each 1-minute stage. During the 2-minute interval between stages, 25 mul of capillary blood were collected from the earlobe for blood lactate [Lac] and blood glucose [Gluc] analysis (YSI 2700S). The LT in the LP and BP was identified at IT by the inflexion in [Lac] response as well as by an equation originated from a polynomial adjustment (LTp) of the [Lac]/% 1RM ratio responses. The lowest [Gluc] during the IT identified the GT. The analysis of variance did not show differences among the 1RM at the thresholds identified by different methods in the LP (LTLP = 31.0% +/- 5.3% 1RM; GTLP = 32.1% +/- 6.1% 1RM; LTpLP = 36.7% +/- 5.6% 1RM; p > 0.05) and BP (LTBP = 29.9% +/- 8.5% 1RM; GTBP = 32.1% +/- 8.5% 1RM; LTpBP = 31.8% +/- 6.7% 1RM; p > 0.05). It was concluded that it was possible to identify the LT and GT in resistance exercise by different methods for individuals with type 2 diabetes with no differences between them. The intensities (kg) corresponding to these thresholds were between 46% and 60% of the body weight on the LP and between 18% and 26% of the body weight on the BP, in which the exercise prescription would be done to this intensity in 3 sets of 20 to 30 repetitions each and 1 minute of rest while alternating the muscle groups for blood glucose control for individuals with characteristics similar to the participants.