Biological, chemical and physical responses of lakes to experimental acidification

1982 ◽  
Vol 18 (1-3) ◽  
pp. 259-271 ◽  
Author(s):  
D. W. Schindler ◽  
M. A. Turner
Keyword(s):  
Experimental Acidification ◽  
Physical Responses

How does the workload applied during the training week and the contextual factors affect the physical responses of professional soccer players in the match?

2021 ◽  
pp. 174795412199561
Author(s):  
Berni Guerrero-Calderón ◽  
Maximilian Klemp ◽  
José Alfonso Morcillo ◽  
Daniel Memmert
Keyword(s):  
Prediction Models ◽  
Contextual Factors ◽  
Soccer Players ◽  
Professional Soccer ◽  
Soccer Teams ◽  
Level Of Significance ◽  
Physical Output ◽  
Physical Responses ◽  
Positive Effect

The aim of this study was to examine whether match physical output can be predicted from the workload applied in training by professional soccer players. Training and match load records from two professional soccer teams belonging to the Spanish First and Second Division were collected through GPS technology over a season ( N = 1678 and N = 2441 records, respectively). The factors playing position, season period, quality of opposition, category and playing formation were considered into the analysis. The level of significance was set at p ≤ .05. The prediction models yielded a conditional R-squared in match of 0.51 in total distance (TD); 0.58 in high-intensity distance (HIRD, from 14 to 24 km · h−1); and 0.60 in sprint distance (SPD, >24 km·h−1). The main finding of this study was that the physical output of players in the match was predicted from the training-load performed during the previous training week. The training-TD negatively affected the match physical output while the training-HIRD showed a positive effect. Moreover, the contextual factors – playing position, season period, division and quality of opposition – affected the players’ physical output in the match. Therefore, these results suggest the appropriateness of programming lower training volume but increasing the intensity of the activity throughout the weekly microcycle, and considering contextual factors within the load programming.

scholarly journals Physical Responses of Bacterial Chemoreceptors

2007 ◽  
Vol 366 (5) ◽  
pp. 1416-1423 ◽  
Author(s):  
Ady Vaknin ◽  
Howard C. Berg
Keyword(s):  
Bacterial Chemoreceptors ◽  
Physical Responses

Physical responses of professional soccer players during 4 vs. 4 small-sided games with mini-goals according to rule changes

2017 ◽  
Author(s):  
Jesús V. Giménez ◽  
Hongyou Liu ◽  
Patrycja Lipińska ◽  
Andrzej Szwarc ◽  
Paweł Rompa ◽  
...  
Keyword(s):  
Soccer Players ◽  
Professional Soccer ◽  
Rule Changes ◽  
Physical Responses

Effects of Experimental Acidification on Phyto-, Bacterio-and Zooplankton in Enclosures of a Highly Humic Lake

1986 ◽  
Vol 71 (6) ◽  
pp. 737-758 ◽  
Author(s):  
Laubi Arvola ◽  
Kalevi Salonen ◽  
Irin A. Bergström ◽  
Anne Heinänen ◽  
Anne Ojala
Keyword(s):  
Humic Lake ◽  
Experimental Acidification

Allostatic Load of Men and Women in Early Middle Age

2005 ◽  
Vol 26 (1) ◽  
pp. 20-28 ◽  
Author(s):  
Marja-Liisa Kinnunen ◽  
Jaakko Kaprio ◽  
Lea Pulkkinen
Keyword(s):  
Longitudinal Study ◽  
Allostatic Load ◽  
Middle Age ◽  
Glycosylated Hemoglobin ◽  
Density Lipoprotein ◽  
Dehydroepiandrosterone Sulfate ◽  
Men And Women ◽  
Waist To Hip Ratio ◽  
Physical Responses

Abstract. The present longitudinal study investigated three aspects of allostatic load, a long-term negative consequence of physical responses to stress: (1) sex differences in allostatic load in early middle age, (2) associations between career stability history and allostatic load, and (3) relationships between allostatic load and health problems. Participants consisted of 62 men and 55 women from the ongoing Jyväskylä Longitudinal Study of Personality and Social Development, Finland. Allostatic load was the sum of eight parameters (dehydroepiandrosterone-sulfate, 12-h urinary norepinephrine, high-density lipoprotein, triglycerides, glycosylated hemoglobin, systolic and diastolic blood pressure, and waist-to-hip ratio) for which the participant fell into the high-risk quartile. Results showed that 41.9% of men and 21.8% of women had an elevated allostatic load at age 42. Participants with preceding unstable career assessed prospectively at age 36 had an over three-fold risk for high allostatic load six years later compared to participants with a stable career history; sex, alcohol consumption, and smoking were adjusted for in the models. Furthermore, participants with high allostatic load reported having more psychosomatic symptoms. The results reveal that an unstable career as a long-term stressful life condition may have long-lasting effects on health.

scholarly journals Design and Implementation of a Virtual Reality System for Treating Highway Phobias: VRStreet

2018 ◽  
Author(s):  
Jorge A Fuentes ◽  
Rodrigo Nieto ◽  
Francisca Melis ◽  
Luz María González ◽  
Gonzalo Mauricio Rojas ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Steering Wheel ◽  
Specific Situation ◽  
Virtual Reality System ◽  
Patient Will ◽  
Normal Human ◽  
Immersive Environment ◽  
The One ◽  
Future Work ◽  
Physical Responses

To feel fear in a specific situation is a normal human experience, however, when this fear or aversion becomes excessive and disrupts the day to day life of an individual, it is said the person suffers from a type of anxiety disorder called phobia. One common type of treatment for phobias is exposure therapy (professionals expose the patient gradually to the feared object or situation).The objective of this paper is to implement a Virtual Reality system that simulates a real highway environment which allows to treat patients affected by highway phobias in a safe place.In cooperation with psychologists and psychiatrists, an action protocol was conducted to create and recreate the variables of the virtual environment to which the patient will be subjected to. Once this was completed, a Virtual Reality application was made that simulates a realistic highway which includes exits, overpasses, underpasses, and tunnels, among others.This hardware/software system will include Oculus Rift DK2 VR glasses in order to create an immersive environment that the patient can consider real and who will be able to interact with it. The performance of the vehicle was programmed through physical responses similar to reality as well as techniques of artificial intelligence in the vehicles that will interact with the one controlled by the patient. Also, this system includes a steering wheel, pedals, and a gearshift (manual or automatic).We think that this system will contribute to treating highway phobias, allowing the psychiatrist or psychologist to carry out therapy in an appropriate manner and through the support of technology the professional will have the ability to simulate the anxiogenic environment in a realistic manner so as to achieve effective treatment. In a future work, we must quantify the possible benefits of this type of VR system in phobia patients.

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