Exercise--Physiological aspects.

The purpose of the present study was to investigate if any relationship exists
between anthropometric measurements with average concentric velocity (ACV) at
various intensities in the back squat and the number of repetitions able to be
performed during a set to volitional fatigue at 70% of one-repetition maximum
(1RM). It was hypothesised that short femurs and total height would be related to
slower ACVs and lower total number of repetitions performed. 58 resistance trained
subjects were recruited and attended one day of data collection. Subjects performed
1RM testing of the back squat followed by two single repetition sets at 30-90% of
1RM and a 70% of 1RM set to fatigue. There was no significant correlation between
femur length and height with ACV at any intensity (p>0.05). A significant negative
correlation existed between both height (r=-0.39, p=0.003) and femur length (r=-0.31,
p=0.018) with total number of repetitions performed.

The primary purpose of this study was to examine the impact of acute highintensity
interval Exercise (HIIE) on plasma cfDNA and IL-6 responses in obese and
normal-weight subjects. Fifteen subjects (8 obese and 7 normal-weight) were recruited to
participate in an acute HIIE protocol. Our results demonstrated a significant elevation
across time in plasma cfDNA and IL-6 immediately following acute HIIE, with no
difference between obese and normal-weight subjects. Furthermore, cfDNA was not
correlated with IL-6 in response to acute HIIE in either group. These findings indicate
that the obese state does not further exacerbate the release of acute HIIE-induced
inflammatory mediators (cfDNA and IL-6), which suggests that HIIE training may serve
as a time-effective exercise strategy to improve obesity-associated inflammation.

The primary purpose of this study was to investigate the effect of acute high-intensity interval exercise (HIIE) vs. continuous moderate-intensity exercise (CME) on serum CTRP9 and brachial FMD responses in obese and normal-weight subjects. Sixteen participants (9 obese and 7 normal-weight) completed HIIE and CME in a randomized fashion. Our results showed a significant time effect for CTRP9 immediately following acute HIIE and CME in both groups. Furthermore, both significant treatment by time and group by time interactions for FMD were observed following both exercise protocols, with greater CME-induced FMD response in obese subjects than normal-weight subjects. Additionally, a positive correlation in percent change (baseline to peak) between CTRP9 and FMD was observed following acute CME. These findings support acute CME for improvement of endothelial function in obesity. Furthermore, the novel results from this study provide a foundation for additional examination of the mechanisms of exercise-mediated CTRP9 on endothelial function.