scholarly journals No changes in corticospinal excitability, biochemical markers, and working memory after six weeks of high‐intensity interval training in sedentary males

2019 ◽  
Vol 7 (11) ◽  
Author(s):  
Chiara Nicolini ◽  
Stephen Toepp ◽  
Diana Harasym ◽  
Bernadeta Michalski ◽  
Margaret Fahnestock ◽  
...  
Keyword(s):  
Working Memory ◽  
High Intensity ◽  
Biochemical Markers ◽  
Interval Training ◽  
Corticospinal Excitability ◽  
High Intensity Interval Training ◽  
High Intensity Interval

scholarly journals Exercise intensity affects acute neurotrophic and neurophysiological responses poststroke

2019 ◽  
Vol 126 (2) ◽  
pp. 431-443 ◽  
Author(s):  
Pierce Boyne ◽  
Colleen Meyrose ◽  
Jennifer Westover ◽  
Dustyn Whitesel ◽  
Kristal Hatter ◽  
...  
Keyword(s):  
Aerobic Exercise ◽  
Exercise Intensity ◽  
High Intensity ◽  
Interval Training ◽  
Intracortical Inhibition ◽  
Corticospinal Excitability ◽  
Moderate Intensity ◽  
High Intensity Interval Training ◽  
High Intensity Interval ◽  
The Brain

Aerobic exercise may acutely prime the brain to be more responsive to rehabilitation, thus facilitating neurologic recovery from conditions like stroke. This aerobic priming effect could occur through multiple mechanisms, including upregulation of circulating brain-derived neurotrophic factor (BDNF), increased corticospinal excitability, and decreased intracortical inhibition. However, optimal exercise parameters for targeting these mechanisms are poorly understood. This study tested the effects of exercise intensity on acute BDNF and neurophysiological responses. Sixteen ambulatory persons >6 mo poststroke performed three different 20-min exercise protocols in random order, approximately 1 wk apart, including the following: 1) treadmill high-intensity interval training (HIT-treadmill); 2) seated-stepper HIT (HIT-stepper); and 3) treadmill moderate-intensity continuous exercise (MCT-treadmill). Serum BDNF and transcranial magnetic stimulation measures of paretic lower limb excitability and inhibition were assessed at multiple time points during each session. Compared with MCT-treadmill, HIT-treadmill elicited significantly greater acute increases in circulating BDNF and corticospinal excitability. HIT-stepper initially showed BDNF responses similar to HIT-treadmill but was no longer significantly different from MCT-treadmill after decreasing the intensity in reaction to two hypotensive events. Additional regression analyses showed that an intensity sufficient to accumulate blood lactate appeared to be important for eliciting BDNF responses, that the interval training approach may have facilitated the corticospinal excitability increases, and that the circulating BDNF response was (negatively) related to intracortical inhibition. These findings further elucidate neurologic mechanisms of aerobic exercise and inform selection of optimal exercise-dosing parameters for enhancing acute neurologic effects. NEW & NOTEWORTHY Acute exercise-related increases in circulating BDNF and corticospinal excitability are thought to prime the brain for learning. Our data suggest that these responses can be obtained among persons with stroke using short-interval treadmill high-intensity interval training, that a vigorous aerobic intensity sufficient to generate lactate accumulation is needed to increase BDNF, that interval training facilitates increases in paretic quadriceps corticospinal excitability, and that greater BDNF response is associated with lesser intracortical inhibition response.

scholarly journals Acute Effects of High-Intensity Interval Training on Brain-Derived Neurotrophic Factor, Cortisol and Working Memory in Physical Education College Students

2020 ◽  
Vol 17 (21) ◽  
pp. 8216
Author(s):  
Inmaculada C. Martínez-Díaz ◽  
María C. Escobar-Muñoz ◽  
Luis Carrasco
Keyword(s):  
College Students ◽  
Working Memory ◽  
Neurotrophic Factor ◽  
High Intensity ◽  
Interval Training ◽  
Brain Derived Neurotrophic Factor ◽  
Peak Power Output ◽  
High Intensity Interval Training ◽  
Single Bout ◽  
High Intensity Interval

High-intensity interval training (HIIT) is considered one of the most effective methods for improving cardiorespiratory and metabolic functions. However, it is necessary to clarify their effects on neurophysiological responses and coginitive functioning. Thus, this study aimed to determine the effects of an acute bout of HIIT on neurocognitive and stress-related biomarkers and their association with working memory (WM) capacity in healthy young adults. Twenty-five male college students performed a single bout of HIIT consisting of 10 × 1 min of cycling at their VO2 peak power output. Plasma Brain-Derived Neurotrophic Factor (BDNF) and cortisol (CORT) levels, and WM (Digit Span Test (DST)), were assessed pre-, post- and 30 min post-intervention. Significant post-exercise increases in circulating BDNF and CORT levels were observed coinciding with the highest DST performance; however, no statistical associations were found between cognitive and neurophysiological variables. Moreover, DST scores obtained 30 min after exercise remained higher than those assessed at pre-exercise. In conclusion, the stress induced by a single bout of HIIT induces a remarkable response of BDNF and CORT boosting WM capacity in healthy young males. Future research should clarify the association between cognitive and neurobiological markers during intense exercise stimulation.

High-intensity interval training on body composition, functional capacity and biochemical markers in healthy young versus older people

2020 ◽  
Vol 141 ◽  
pp. 111096
Author(s):  
Gabriel Nasri Marzuca-Nassr ◽  
Macarena Artigas-Arias ◽  
María Angélica Olea ◽  
Yuri SanMartín-Calísto ◽  
Nolberto Huard ◽  
...  
Keyword(s):  
Body Composition ◽  
Older People ◽  
Functional Capacity ◽  
High Intensity ◽  
Biochemical Markers ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
High Intensity Interval

High-Intensity Interval Training and Hypoglycemia Minimization in Adults with Type 1 Diabetes (HIIT HYPO T1D Study)

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 743-P
Author(s):  
ANGELA S. LEE ◽  
KIMBERLEY L. WAY ◽  
NATHAN A. JOHNSON ◽  
STEPHEN M. TWIGG
Keyword(s):  
Type 1 Diabetes ◽  
High Intensity ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
High Intensity Interval

553-P: Differential Effects of High-Intensity Interval Training on Somatosensory and Autonomic Nerve Function in Patients with Type 2 Diabetes

Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 553-P
Author(s):  
GIDON J. BÖNHOF ◽  
ALEXANDER STROM ◽  
MARIA APOSTOLOPOULOU ◽  
DOMINIK PESTA ◽  
MICHAEL RODEN ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
High Intensity ◽  
Interval Training ◽  
Autonomic Nerve ◽  
Nerve Function ◽  
High Intensity Interval Training ◽  
Differential Effects ◽  
Autonomic Nerve Function ◽  
High Intensity Interval
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