Physical activity and psychophysiological stress reactivity: Ulrike Rimmele

Author(s):  
Felix Proessl ◽  
Maria C. Canino ◽  
Meaghan E. Beckner ◽  
William R. Conkright ◽  
Alice D. LaGoy ◽  
...  

Simulated military operational stress (SMOS) provides a useful model to better understand resilience in humans as the stress associated with caloric restriction, sleep deficits, and fatiguing exertion degrades physical and cognitive performance. Habitual physical activity may confer resilience against these stressors by promoting favorable use-dependent neuroplasticity, but it is unclear how physical activity, resilience, and corticospinal excitability (CSE) relate during SMOS. PURPOSE: To examine associations between corticospinal excitability, physical activity, and physical performance during SMOS. METHODS: Fifty-three service members (age: 26±5yrs, 13 women) completed a five day and night intervention composed of familiarization, baseline, SMOS (two nights/days), and recovery days. During SMOS, participants performed rigorous physical and cognitive activities while receiving half of normal sleep (two 2h blocks) and caloric requirements. Lower and upper limb CSE were determined with transcranial magnetic stimulation (TMS) stimulus-response curves. Self-reported resilience, physical activity, military-specific physical performance (TMT) and endocrine factors were compared in individuals with high (HIGH) and low CSE based on a median split of lower limb CSE at baseline. RESULTS: HIGH had greater physical activity and better TMT performance throughout SMOS. Both groups maintained physical performance despite substantial psychophysiological stress. Physical activity, resilience, and TMT performance were directly associated with lower limb CSE. CONCLUSION: Individual differences in physical activity coincide with lower (but not upper) limb CSE. Such use-dependent corticospinal excitability directly relates to resilience and physical performance during SMOS. Future studies may use non-invasive neuromodulation to clarify the interplay among CSE, physical activity, and resilience and improve physical and cognitive performance.


2019 ◽  
Vol 26 (4) ◽  
pp. 344-355 ◽  
Author(s):  
Jens-Peter Gnam ◽  
Simone-Nadine Loeffler ◽  
Sascha Haertel ◽  
Florian Engel ◽  
Stefan Hey ◽  
...  

1994 ◽  
Vol 26 (Supplement) ◽  
pp. S114
Author(s):  
S. G. Aldana ◽  
B. H. Jacobson ◽  
L. Thorton ◽  
P. L. Kelley ◽  
C. L. Harris

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Karen C. Olson ◽  
Haley A. Carroll ◽  
M. Kathleen B. Lustyk

While evidence suggests that women exhibit psychophysiological differences in stress reactivity across the menstrual cycle, the relationships among psychological and physiological stress reactivity states are not well understood. Healthy, normally cycling women (N=44) participated in two counterbalanced laboratory sessions during the follicular and luteal phases where heart rate and subjective stress were assessed in response to stressors. There were no differences in the magnitudes of psychophysiological stress responses across the cycle. Psychological and physiological states were largely unrelated in the follicular phase but interrelationships were found in the luteal phase and these relationships were influenced by autonomic perception and trait anxiety. For women with high trait anxiety, autonomic perception appeared to buffer psychological and physiological stress reactivity during the luteal phase, suggesting that autonomic perception may be a protective factor for more anxious women during times of acute stress.


2020 ◽  
Vol 19 (S2) ◽  
pp. 7-17
Author(s):  
V Kolpakov ◽  
E Tomilova ◽  
N Strizhak ◽  
S Krivoshchekov ◽  
T Bespalova

Aim. The purpose of the article is to provide a clinical and physiological assessment of adaptive variability of the psychophysiological status in schoolchildren and to obtain prognostic markers for forming success during health enhancement and sports activities. Materials and methods. 187 male schoolchildren of the first and second health group from secondary educational institutions in Tyumen participated in the study. A set of clinical and physiological methods was used. Habitual physical activity (HPA) was measured on a daily basis using Huawei Band 2 Pro (China) fitness tracker provided with accelerometer and gyroscope. The band is available for both Android (version 4.4 or later) and iOS 8.0 or later, which allows registering data at any time period. The type of partial body constitution was established according to a three-component scheme and a HPA level (low HPA – FTC-1, medium HPA – FTC-2, high HPA – FTC-3). Results. Based on the concept of typological variability of physiological individuality, a systemic relationship between the indicators of anxiety, aggressiveness and depression was established in primary schoolchildren with different levels of habitual physical activity (low – LHPA, medium – MHPA, high – HHPA) and of different functional types (FTC-1, FTC-2, FTC-3). Compared with other groups, primary schoolchildren with LHPA – FTC-1 showed an increase in general anxiety and a total indicator of depression, a decrease in mood, a negative assessment of their own inefficiency, and the lowest indicator of aggressiveness with an auto-aggressive orientation. In children with HHPA, there was a decrease in the general level of depression and mood, a negative assessment of generally accepted rules, aggressive behavior, a negative assessment of their own inefficiency combined with an increased level of aggressiveness of a heteroaggressive orientation. Conclusion. Clinical and physiological characteristics of three physiological norm variants (functional constitutional types, children with low (FTC-1), medium (FTC-2) and high (FTC-3) habitual physical activity) determined the selection of psychophysiological markers of stress reactivity in primary schoolchildren, which provides an objective basis for prognostic assessment and targeted success formation in sports and health enhancement activities, as well as the creation of effective monitoring of transition states and preventive forms for correcting dysregulation.


Biofeedback ◽  
2009 ◽  
Vol 37 (2) ◽  
pp. 63-66
Author(s):  
Maureen Haney

Abstract This article describes a performance enhancement/resilience training program developed and implemented for both pre- and postdeployment ROTC cadets at California State University, Fullerton. The program integrates a psychophysiological stress profile, multimodal biofeedback training, and a skills-based group educational program to modulate stress reactivity and promote autonomic nervous system flexibility. Heart rate variability biofeedback training receives special emphasis. The impetus for the program and practical guidelines for using biofeedback with military personnel are presented.


2009 ◽  
Vol 46 (4) ◽  
pp. 852-861 ◽  
Author(s):  
James N. Roemmich ◽  
Maya Lambiase ◽  
Sarah J. Salvy ◽  
Peter J. Horvath

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