Exercise and Stress Tolerance

Presented in this paper is research designed in part to show that although moderate running by well-trained runners plays a significant role in reducing stress response to subsequently introduced stressors, running at the level of marathon competition alters psychological and physiological dispositions in a manner not conducive to reduced stress responses. In these demonstrations, the choice of our psychological and physiological dependent measures was guided by a larger theoretical framework concerning the relationship of exercise to temperament. We will discuss this larger view first because it provides a theoretical perspective that is useful in considering our specific hypotheses. We believe that regular aerobic exercise, with its requirements for sympathetic nervous system (SNS) activation and associated endocrine activity, leads to chronic reduction in the individual\u27s experienced stress responses to psychological stressors. As long as two decades ago, Michael (1957) suggested that regular exercise would allow greater steroid reserves-reserves available to counter stress. Other similar views include that advanced by Edington and Edgerton (1976), who posit that extending the capacity of the adrenal medulla to generate the catecholamines through exercise may help to reduce the experience of stress. Moorehouse and Miller (1971) have suggested that exercise may increase the size and lower the threshold of stimulation of the adrenal glands, resulting in greater reserves of antistress steroids and shorter response times to stressors

Global data for SGD and CO2

<p>This dataset is a global compilation of 40 coastal ecosystems across 14 countries. It consists of continuous time series for carbon dioxide and radon. Other parameters included are latitude, longitude, depth, temperature, salinity, dissolved oxygen, and water-air flux for carbon dioxide. Timestamps of each measurement correspond to the local time zone. Carbon dioxide and radon were measured using Licor and RAD7, respectively. Depth, temperature, salinity, and dissolved oxygen were measured using probes. This dataset was used to interpret the impact of SGD on CO2 dynamics in globally distributed coastal ecosystems. </p> <p>Data sources are mentioned in the sheet References. </p> <p>Column names in the "Master File" sheet: </p> <ul> <li>Location: Name of the location of measurement</li> <li>Location ID: ID of the location </li> <li>Country: Country of location </li> <li>Ecosystem Type: categorical ecosystem type </li> <li>Latitude: Latitudinal coordinate of the location (DD)</li> <li>Longitude: Longitudinal coordinate of the location (DD)</li> <li>Date (DD/MM/YYYY): Date when the measurement was taken (DD/MM/YYYY)</li> <li>Time (hh:mm): Local time of when the measurement was taken</li> <li>Time since start (Days): Duration of the continuous measurement since the first measurement was started (days)</li> <li>Wind Speed (m/s): Wind speed at the location at the time of measurement</li> <li>Depth (m): Depth at which the measurement was taken (m)</li> <li>Temperature (°C): Temperature at the point of radon/carbon dioxide measurement</li> <li>Salinity: Salinity of water at the point of radon/carbon dioxide measurement</li> <li>DO (%): Dissolved oxygen in the water at the point where radon measurement was taken (%)</li> <li>Radon (dpm/L): Radon measurement in water (dpm/L). Measured using Durridge RAD7 </li> <li>CO2 (µatm) at sst: measurement of Carbon Dioxide dissolved in water at sea surface temperature (µatm). Measured using LiCor.  </li> <li>Water-air CO2 flux (mmol m-2 day-1): Calculated water-air flux of carbon dioxide. </li> </ul&gt

Global SGD and CO2 data

<p>This dataset is a global compilation of 40 coastal ecosystems across 14 countries. It consists of continuous time series for carbon dioxide and radon. Other parameters included are latitude, longitude, depth, temperature, salinity, dissolved oxygen, and water-air flux for carbon dioxide. Timestamps of each measurement correspond to the local time zone. Carbon dioxide and radon were measured using Licor and RAD7, respectively. Depth, temperature, salinity, and dissolved oxygen were measured using probes. This dataset was used to interpret the impact of SGD on CO2 dynamics in globally distributed coastal ecosystems. </p> <p>Data sources are mentioned in the sheet References. </p> <p>Column names in the "Master File" sheet: </p> <ul> <li>Location: Name of the location of measurement</li> <li>Location ID: ID of the location </li> <li>Country: Country of location </li> <li>Ecosystem Type: categorical ecosystem type </li> <li>Latitude: Latitudinal coordinate of the location (DD)</li> <li>Longitude: Longitudinal coordinate of the location (DD)</li> <li>Date (DD/MM/YYYY): Date when the measurement was taken (DD/MM/YYYY)</li> <li>Time (hh:mm): Local time of when the measurement was taken</li> <li>Time since start (Days): Duration of the continuous measurement since the first measurement was started (days)</li> <li>Wind Speed (m/s): Wind speed at the location at the time of measurement</li> <li>Depth (m): Depth at which the measurement was taken (m)</li> <li>Temperature (°C): Temperature at the point of radon/carbon dioxide measurement</li> <li>Salinity: Salinity of water at the point of radon/carbon dioxide measurement</li> <li>DO (%): Dissolved oxygen in the water at the point where radon measurement was taken (%)</li> <li>Radon (dpm/L): Radon measurement in water (dpm/L). Measured using Durridge RAD7 </li> <li>CO2 (µatm) at sst: measurement of Carbon Dioxide dissolved in water at sea surface temperature (µatm). Measured using LiCor.  </li> <li>Water-air CO2 flux (mmol m-2 day-1): Calculated water-air flux of carbon dioxide. </li> </ul&gt