Autonomic Responses to an Acute Bout of High-Intensity Body Weight Resistance Exercise vs. Treadmill Running.
The aim of this study was to compare postexercise autonomic nervous system (ANS) recovery between a high-intensity training protocol (HITP) and high-intensity treadmill running (TM) in 10 physically fit males. For each trial, ANS activity was measured through the heart rate variability markers of log-transformed square root of the successive R-R differences (lnRMSSD) and high frequency power (lnHF). These markers were analyzed in 5-minute segments at 5-10 minutes of the pre-exercise period (PRE) and during the postexercise period at 15-20 minutes (POST15-20min), 20-25 minutes (POST20-25min), 25-30 minutes (POST25-30min), and 1 hour (POST60min). Plasma epinephrine (E) and norepinephrine (NE) were also examined at PRE, immediately post exercise (IPE), 1-hour post (1HP), and 2-hour post (2HP). The results of this study demonstrate a significant overall time-dependent decreases in lnRMSSD and lnHF (p = 0.003 and 0.001, respectively) in both trials. Trial-dependent differences were also observed in postexercise lnRMSSD and lnHF measures, HITP being significantly lower than TM (p = 0.002 and 0.000, respectively). lnRMSSD at POST60min-HITP remained significantly lower compared to PRE (p ≤ 0.05). lnHF returned to baseline in HIPT and TM (p = 0.081 and 0.065, respectively). A time-dependent increase in E and NE was observed in both trials at time point IPE when compared to PRE (p ≤ 0.05). E at 1HP and 2HP returned to near resting levels (p = 0.62, p = 0.26), whereas NE remained slightly elevated in both groups (p = 0.003, p = 0.021). A trial-dependent increase was observed with the HITP eliciting a greater E response (p = 0.025) and NE response (p = 0.03). The HITP causes a greater disruption of the ANS than intensity-matched TM exercise.
1Department of Exercise Science and Sports Management, Kennesaw State University, Kennesaw, Georgia; 2Department of Exercise Science, University of Alabama, Tuscaloosa, Alabama; 3Department of Kinesiology, Auburn University, Auburn, Alabama; and 4Department of Medical and Clinical Lab Sciences, Auburn University, Montgomery, Montgomery, Alabama.
Brian M
BM
Kliszczewicz
Michael R
MR
Esco
John C
JC
Quindry
Daniel L
DL
Blessing
Gretchen D
GD
Oliver
Kyle J
KJ
Taylor
Brandi M
BM
Price
D000328:Adult; D001341:Autonomic Nervous System / Q000502:physiology*; D004837:Epinephrine / Q000097:blood; D005080:Exercise Test; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D009638:Norepinephrine / Q000097:blood; D005082:Physical Exertion / Q000502:physiology*; D055070:Resistance Training; D012146:Rest / Q000502:physiology; D012420:Running / Q000502:physiology*; D013997:Time Factors; D055815:Young Adult
D009638:Norepinephrine; D004837:Epinephrine