Impact of Strength Training Intensity on Brain-derived Neurotrophic Factor
Int J Sports Med DOI: 10.1055/a-2197-1201The present study employed a randomized crossover design to investigate the
effect of strength-training exercise at varying intensities on acute changes in
plasma brain-derived neurotrophic factor (BDNF) levels. Fourteen trained male
subjects (41.0±5.8 years old) were enrolled in the current study. The
strength-training protocol included bench press, leg press, and lat pull-down
exercises. Participants performed four sets with repetition failure at
60% or 80% of their one-repetition maximum (1RM), with a
two-minute rest period. The order of intensity was randomized among volunteers.
Blood samples were collected before, immediately after, and one hour after each
exercise protocol. A time-point comparison revealed that a single session of
strength training at 60% of 1RM increased lactate plasma concentrations
from 1.2 to 16 mmol/L (p<0.0001). However, no
significant changes were observed in the plasma BDNF concentration. Conversely,
the training session at 80% of 1RM increased lactate concentrations from
1.3 to 14 mmol/L (p<0.0001) and BDNF concentrations from
461 to 1730 pg/ml (p=0.035) one hour after the session’s
conclusion. These findings support the hypothesis that a single
strength-training session at 80% 1RM can significantly enhance
circula...
Source: International Journal of Sports Medicine - Category: Sports Medicine Authors: Borges Junior, Marcos Tavares, Larissa Ferreira Jacomini Nagata, Gabriela Yumi Barroso, Luc élia Scarabeli Silva Fernandes, Heliana Barros Souza-Gomes, Antonio Felipe Miranda, Aline Silva Nunes-Silva, Alben á Tags: Genetics & Molecular Biology Source Type: research
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