
Abstract
Adipose tissue is specialized cells that produce and release adipokines. Exercise
may modulate adipokine production in adipocytes. The aim of this longitudinal
study was to evaluate the acute and chronic effects of strength training (ST) on
plasma levels of adiponectin, leptin, and resistin. Twelve untrained young male
participants (23.42±2.67 years) were selected. The training protocol
consisted of 3 exercises, with 3 sets of 65% of 1RM (one-repetition
maximum) with pause of 90 s between sets with duration of
5 s/repetition (2 s conc/3 s ecc), 3
times a week for 10 weeks. Blood was collected at four time points: before and
after the first ST session and before and after the last ST session. The
comparisons between adipokine levels before and after the same training session
showed acute changes, while the comparisons between levels before or after the
first session versus before or after the last session revealed chronic
alterations. ST increased adiponectin levels after the first exercise session in
comparison to levels before this session [50 952 (46 568–51 894)
pg/mL vs. 52 981 (49 901–54 467) pg/mL,
p=0.019]. Similar differences were observed for resistin levels, which
were higher after the last session compared to before [4 214.4 (±829)
pg/mL vs. pre-S30 2 251.3 (±462.2) pg/mL,
p=0.0008] and in the comparison between after the last and after the
first ST sessions [4 214.4 (±829.0) pg/mL vs. 1 563.7
(±284.8) pg/mL, p=0.004]. Leptin levels acutely changed
in the last training session. ST produced acute and chronic changes in plasma
adipokines.
Key words
physical exercise - adipose tissue - adiponectin - leptin - resistin