Abstract
Objective: The aim was to meta-analyze the effect of different type of overloads on parasympathetic modulation to the heart, assessed by root-mean-square difference of successive normal RR intervals (RMSSD) of athletes.
Methods: The analysis of the 14 studies selected (20 subgroups within studies), compared RMSSD of the same athletes before and after an overload period.
Results: RMSSD of athletes were lower at pre-competition compared to baseline (SMD = -0.50 [-0.83; -0.18], p = 0.002), while volume, volume plus intensity and post-competition overloads showed similar RMSSD than their respective normal load periods.
Conclusion: The lower RMSSD during pre-competition overload, characterize an loss of homeostasis, and could be explained by the presence of pre-competition anxiety, stress, and higher psychological challenges in addition to the same physical stress present in the other types of overloads (i.e.: higher volume or training intensity).
Methods: The analysis of the 14 studies selected (20 subgroups within studies), compared RMSSD of the same athletes before and after an overload period.
Results: RMSSD of athletes were lower at pre-competition compared to baseline (SMD = -0.50 [-0.83; -0.18], p = 0.002), while volume, volume plus intensity and post-competition overloads showed similar RMSSD than their respective normal load periods.
Conclusion: The lower RMSSD during pre-competition overload, characterize an loss of homeostasis, and could be explained by the presence of pre-competition anxiety, stress, and higher psychological challenges in addition to the same physical stress present in the other types of overloads (i.e.: higher volume or training intensity).
Original language | English |
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Article number | 113780 |
Journal | Physiology and Behavior |
Volume | 250 |
Early online date | 16 Mar 2022 |
DOIs | |
Publication status | Published - 24 Mar 2022 |
Bibliographical note
Funding Information:Protocol PROSPERO:, Number: CRD42020181966
Publisher Copyright:
© 2022 Elsevier Inc.
Keywords
- Athletes
- Autonomic nervous system
- Biomarkers
- Fatigue
- Physiological
- Stress
ASJC Scopus subject areas
- Experimental and Cognitive Psychology
- Behavioral Neuroscience