Intensity Control

2019 ◽  
pp. 105-126
Author(s):  
J. Michael Gillette ◽  
Michael McNamara
Keyword(s):  
Author(s):  
V. Barannik ◽  
V. Himenko ◽  
V. Tverdokhleb ◽  
S. Kovalevskiy ◽  
K. Warwas ◽  
...  

2007 ◽  
Vol 24 (2) ◽  
pp. 463 ◽  
Author(s):  
Jacob Rubinstein ◽  
Gershon Wolansky
Keyword(s):  

2020 ◽  
Vol 39 (6) ◽  
pp. 8805-8812
Author(s):  
Zhihui He ◽  
Xiaofeng Li

During the COVID-19 epidemic period, it is essential to strengthen physical exercise and improve the health of the whole people. In this paper, based on genetic algorithm, a fuzzy control system is proposed to dynamically adjust the exercise ability of the bodybuilders under the comprehensive consideration of parameters. Through experiments and data processing, the system obtains bioelectric information related to heart rate, heart rate variability and muscle fatigue of the fitness people in the three states of not fatigue, moderate fatigue and extreme fatigue, establishes fuzzy membership function, and thus establishes personalized fitness information feedback control strategy to maintain moderate fitness intensity. By narrowing the gap between the predicted RPE value based on objective information and the measured RPE, the method provides a unified subjective and objective exercise intensity for the bodybuilders, effectively expands the time of aerobic exercise, and enhances the effect of aerobic exercise. In addition, in order to expand the scope of application of the exercise intensity control model, the service-oriented transformation is carried out to enable it to provide fitness content combinations of interest to fitness practitioners and instructors.


1997 ◽  
Vol 29 (Supplement) ◽  
pp. 70
Author(s):  
R. M. Laukkanen ◽  
M. K. Kalaja ◽  
S. P. Kalaja ◽  
E. B. Holmala ◽  
L. M. Paavolainen ◽  
...  
Keyword(s):  

2017 ◽  
Vol 23 (11) ◽  
pp. 1517-1526 ◽  
Author(s):  
Martin Heine ◽  
Olaf Verschuren ◽  
Erwin LJ Hoogervorst ◽  
Erik van Munster ◽  
Hub GA Hacking ◽  
...  

Background: Evidence supporting the effectiveness of aerobic training, specific for fatigue, in severely fatigued patients with multiple sclerosis (MS) is lacking. Objective: To estimate the effectiveness of aerobic training on MS-related fatigue and societal participation in ambulant patients with severe MS-related fatigue. Methods: Patients ( N = 90) with severe MS-related fatigue were allocated to 16-week aerobic training or control intervention. Primary outcomes were perceived fatigue (Checklist Individual Strength (CIS20r) fatigue subscale) and societal participation. An improvement of ⩾8 points on the CIS20r fatigue subscale was considered clinically relevant. Outcomes were assessed by a blinded observer at baseline, 2, 4, 6 and 12 months. Results: Of the 89 patients that started treatment (median Expanded Disability Status Scale (interquartile range), 3.0 (2.0–3.6); mean CIS20r fatigue subscale (standard deviation (SD)), 42.6 (8.0)), 43 received aerobic training and 46 received the control intervention. A significant post-intervention between-group mean difference (MD) on the CIS20r fatigue subscale of 4.708 (95% confidence interval (CI) = 1.003–8.412; p  = 0.014) points was found in favour of aerobic training that, however, was not sustained during follow-up. No effect was found on societal participation. Conclusion: Aerobic training in MS patients with severe fatigue does not lead to a clinically meaningful reduction in fatigue or societal participation when compared to a low-intensity control intervention.


2015 ◽  
Vol 58 (6) ◽  
pp. 1687-1694 ◽  
Author(s):  
Rupal Patel ◽  
Kevin J. Reilly ◽  
Erin Archibald ◽  
Shanqing Cai ◽  
Frank H. Guenther

Purpose Responses to intensity perturbation during running speech were measured to understand whether prosodic features are controlled in an independent or integrated manner. Method Nineteen English-speaking healthy adults (age range = 21–41 years) produced 480 sentences in which emphatic stress was placed on either the 1st or 2nd word. One participant group received an upward intensity perturbation during stressed word production, and the other group received a downward intensity perturbation. Compensations for perturbation were evaluated by comparing differences in participants' stressed and unstressed peak fundamental frequency (F0), peak intensity, and word duration during perturbed versus baseline trials. Results Significant increases in stressed–unstressed peak intensities were observed during the ramp and perturbation phases of the experiment in the downward group only. Compensations for F0 and duration did not reach significance for either group. Conclusions Consistent with previous work, speakers appear sensitive to auditory perturbations that affect a desired linguistic goal. In contrast to previous work on F0 perturbation that supported an integrated-channel model of prosodic control, the current work only found evidence for intensity-specific compensation. This discrepancy may suggest different F0 and intensity control mechanisms, threshold-dependent prosodic modulation, or a combined control scheme.


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