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The aim of the present study was to assess the effects of daily stress perception on cognitive performance and morning basal salivary cortisol and alpha-amylase levels in healthy children aged 9-12. Participants were classified by whether they had low daily perceived stress (LPS, n = 27) or a high daily perceived stress (HPS, n = 26) using the Children Daily Stress Inventory (CDSI). Salivary cortisol and alpha-amylase were measured at awakening and 30 minutes later. Cognitive performance was assessed using the Cognitive Drug Research assessment system. The HPS group exhibited significantly poorer scores on speed of memory (p < .05) and continuity of attention (p < .05) relative to the LPS group. The HPS group also showed significantly lower morning cortisol levels at awakening and at +30 minutes measures in comparison with the LPS group (p < .05), and mean morning cortisol levels were negatively correlated with speed of memory (p < .05) in the 53 participants. No significant differences were observed between both groups in alpha-amylase levels. These findings suggest that daily perceived stress in children may impoverish cognitive performance via its modulating effects on the HPA axis activity.

Don't let the most important meal of the day steal the spotlight. Your entire morning routine is key to getting your day off on the right foot. Leave enough time to take a shower, brush your teeth, and apply deodorant or antiperspirant so you're not rushing out the door while trying to put on your belt. Even if it takes waking up 10 minutes early, a relaxed morning will leave you feeling energized, clean and ready to tackle even the most daunting presentation. That's a winning formula to reduce stress and minimize sweat before it starts.

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CHICAGO (CBS) -- The deep freeze Chicagoans are waking up to can be tough on one of the busiest commuter rail lines in the country. Metra warned riders trains are running a little slow this morning to reduce stress on the tracks.

Metra also reduces the speed of its trains when temperatures drop below zero, as a preventative measure to reduce the amount of stress on tracks, which can become brittle in extremely cold conditions, putting stress on welded joints. Speed restrictions on Metra trains went into effect at midnight due to the extreme cold, limiting them to a top speed of 65 mph, compared to the usual 79 mph. So commuters will need to give themselves a little extra time on Friday.

The correlations between DALDA and speed (a) and number of strokes (b). DALDA: Daily Analysis of Life Demands of Athletes; Swimming speed and number of strokes data were selected at submaximal workload (men: 36 kg and women: 23 kg).

The present study aimed to examine physiological and psychological parameters among collegiate swimmers on three occasions during an academic year. A better swim performance was observed during off-season compared to pre-season and post-season across all athletes. Women had the lowest HR and lactate concentration at pre-season compared to other timepoints. In addition, an increased in stress sources and symptoms assessed by DALDA was associated with an increased in upper respiratory illness, being less energetic and greater tension state, greater number of strokes, and a decreased in swim speed.

As considering psychological and physiological responses to training stimulus are more likely an individual process. Uniquely, the present study analyzed the dynamic changes in physiological and psychological outcomes during the pre-season phase, off-season phase, and in-season phase throughout the year. Swim speed increased (6.8%) only during off-season phase compared to other two phases where swim speed declined. Theall et al. estimated seasonal stress load in college swimmers by using self-report questionnaire data combined with known academic, training, and competition burden creating a composite score29. It showed that high stress was observed during post-season, where championships overlap with academic exam schedules. Low stress was observed during the off-season and moderate stress was seen during pre-season where swimmers are ramping into a new competition season with building academic work. Life event stress sources and symptoms in collegiate athlete stem from both training (excessive training volume or inadequate rest) and non-training stimuli (emotional, social, and academic)30. Thus, swimmers might have exhibited lower stress level while swim performance is not competing in off-season than during the competitive season. During the pre-season phase, swim speed (-5.9%) and work/stroke (-11.6%) decreased with a greatest elevation in DALDA scores (100%) when compared to off-season phase. Previous study showed using DALDA questionnaire can distinguish different training periods among rest, training days, and pre- and post-match days, with greater DALDA scores observed on training days compared to rest and match days31. Although physiological adaptations may occur according to the change in La- and HR but swimmers possibly were already experiencing high psychological stress as they felt more physical effort and less energetic under the same workload. These data support the aforementioned findings, where swimmers progressed into the competitive season with an increased training volume, they likely experienced more psychological stress, and consequently impacted anaerobic swim performance.

White, co-senior author Vadim N. Gladyshev, PhD, and their colleagues found that pregnancy, getting a hip fracture, and having severe COVID are traumatic or stressful enough to speed up aging. In contrast, having elective surgery did not speed up aging in the short term.

Finally, it helps a lot for parents to stay calm. Arguing wastes time and stresses kids out, making mornings even harder. And if your child consistently has trouble even getting out of bed or throws a tantrum every morning, getting professional support can help.

This chart illustrates the number of passing events (at increasing motor vehicle average speed and volume) experienced over a 10-minute period by a bicyclist riding 10 mph. As motor vehicle speed and volume increase, they magnify the frequency of stressful events for people bicycling.

Motor Vehicle Speed and Volume Amplify One Another as They IncreaseThe frequency at which a person bicycling is passed by motor vehicles is one of the most useful indicators of the level of stress of a roadway or bike facility. Passing events increase with speed and volume, decreasing rider comfort and safety. Where car traffic is routinely above 20 mph, or where traffic volume is higher than 50 vehicles per direction per hour, pressure on bicyclists from motor vehicles attempting to pass degrades comfort for bicycling and increases risk.

Large fluctuations in motor vehicle traffic volume between morning, mid-day, afternoon, and nighttime result in radically different bicycling conditions on the same street throughout the day. The example at right shows a street with roughly 500 vehicles per direction per hour during the peak. While queuing stress occurs at peak times, low off-peak volume results in dangerously high motor vehicle speeds.Peak vs. Off-Peak The variation in speed and volume conditions between peak and off-peak hours can manifest as two distinct issues that decrease comfort and safety.

Heat stress is hard on cattle and other livestock, especially when combined with high humidity and low wind speeds. Heat stress can reduce feed intake, weight gain, reproductive efficiency and milk production, while increasing susceptibility to diseases.

If the heat index is above 100 degrees, animals can tolerate it if shade is available and/or wind speed is at least 10 miles per hour, so show animals should be provided shade and/or moving air via fans.

If the index gets above 110 degrees, animals will be stressed regardless of wind speed. Show animals should be in the shade with fans, especially market ready animals, and have plenty of access to water. If a heat index above 110 is predicted, livestock shows should be completed by noon. In addition, livestock that need to be moved or transported should be out of the facilities by early morning but certainly by noon, if possible.

If the heat index is above 115 degrees, avoid moving or handling market ready animals. Livestock show rings should be shaded with fans and misters; the show staff should consider postponing the show due to excessive heat.

Taking a nap after a workout can help support muscle recovery. As you sleep, your pituitary gland releases a growth hormone that helps build and repair tissue. Not only is this essential for muscle growth, but it can also help speed up recovery.

Your heart is the engine that keeps blood pumping throughout your body. When your heart doesn't work as well as it should, your body can't function normally. If you've had heart problems in the past, your doctor may recommend that you have a test to see how well your blood is flowing into your heart. Let's talk today about thallium and sestamibi stress test, also known as nuclear stress test. This is your heart. It's job is to receive oxygen-poor blood from your body, send it to your lungs to pick up fresh oxygen, then pump that oxygen-rich blood back out to your body. When your heart doesn't get enough blood, it can't work as well as it should. So, why would you need a thallium or sestamibi stress test? Well, your doctor may recommend that you have this test to find out why you're having chest pain, find out which treatment is best for your heart disease, check whether a treatment you've already had, such as medicine or surgery, is working, or see if you have coronary artery disease. So, what happens during the stress test? Well, you'll start to prepare for the stress test a day ahead of time. Don't eat anything the night before the test, and avoid any foods that contain caffeine for a full day beforehand. You'll have to skip your morning cup of coffee or tea, and avoid sodas and chocolate. Your doctor will let you know if you need to stop taking any of your medicines before the test. When you arrive at the doctor's office or medical center for the test, an intravenous, or IV line will be placed into your vein. Through this line, a weakly radioactive substance will be injected into one of your veins. You'll lie down and wait for 15 to 45 minutes, and a special camera will take pictures as the thallium or sestamibi substance moves into your heart during a period of rest. Then you'll walk on a treadmill with EKG electrodes monitoring your heart activity. Once you've reached your maximum level of exercise you'll get another injection of the radioactive substance and your heart will be scanned to see how well the blood is flowing during a period of stress. If you can't exercise, you'll get a drug that will simulate the effects of exercise by making your heart beat faster. During the test, some people feel chest pain, shortness of breath, dizziness, or a fast heartbeat. Let the person who is doing the test know right away if you don't feel well. So, what do the test results mean? Well, your doctor will compare the first set of images to the second set, to see if you have heart disease or your heart disease is getting worse. If blood is flowing well through the arteries of your heart, then your test is normal. If blood isn't flowing well, you may have a blockage in one or more of the coronary arteries of your heart. In that case, you may need to have another test, or an angiography, stent or heart bypass surgery to open up a blocked artery. A stress test can help your doctor see how well your heart is working. Then, you can find out together which treatments you'll need to get your blood pumping smoothly again. e24fc04721