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Nitrogen From Fertilizers Poses Long-Term Threat to Drinking Water: Study

TUESDAY, March 15, 2016 (HealthDay News) — Even if farmers stopped using nitrogen fertilizers today, levels of dangerous nitrates in rivers and lakes would remain high for decades, researchers report.

Canadian scientists analyzed more than 2,000 soil samples from the Mississippi River Basin and found an accumulation of nitrogen. This buildup was not evident in the upper “plow” layer, but instead was found 2 inches to 8 inches beneath the soil surface.

“We hypothesize that this accumulation occurred not only because of the increased use of fertilizers, but also increases in soybean cultivation and changes in tillage practices over the past 80 years,” researcher Kim Van Meter, a doctoral student at the University of Waterloo in Canada, said in a university news release.

Nitrogen fertilizers have been contaminating rivers and lakes and getting into drinking water wells for more than 80 years, the researchers said. Nitrates in drinking water pose a number of health risks, they added.

Their findings suggest that this nitrogen could still find its way into waterways decades after being applied to the fields.

The study was published March 15 in the journal Environmental Research Letters.

“A large portion of the nitrogen applied as fertilizer has remained unaccounted for over the last decades,” Nandita Basu, a Waterloo professor, said in the news release.

“The fact that nitrogen is being stored in the soil means it can still be a source of elevated nitrate levels long after fertilizers are no longer being applied,” Basu added.

More information

The U.S. Centers for Disease Control and Prevention has more about drinking water.





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Could Too Much Cellphone Time Signal Anxiety, Depression?

By Alan Mozes
HealthDay Reporter

TUESDAY, March 15, 2016 (HealthDay News) — Some young adults who constantly reach for their smartphones might be anxious or depressed, preliminary research suggests.

A study of more than 300 college students found heavier technology use was tied to greater risk for anxiety and depression, particularly among those using the devices as a “security blanket” — to avoid dealing with unpleasant experiences or feelings.

Risk was not elevated, however, among young people who used smartphones simply to “escape boredom” or for entertainment, said the researchers from the University of Illinois at Urbana-Champaign. Nor were the devices themselves found to cause mental health problems.

“Handheld devices, with their countless applications and entertainment options and their constant presence at our fingertips, make it easier than ever before to disconnect with the problems [and] stresses of reality, and avoid actively engaging with them,” noted study co-author Tayana Panova.

“But over time,” she said, “turning to the device whenever an uncomfortable situation or feeling arises can become an escapist pattern of behavior, and may make people more vulnerable to stressors due to insufficient emotional ‘exercise.'”

For now, however, “the causation of the effect is unknown,” said Panova, who conducted the study for her undergraduate honors thesis.

“It may be that individuals with higher anxiety/depression use [phone] devices more intensively,” she said, “or that using devices more intensively can eventually lead to the development of anxiety/depression. Or it can mean that there is a cyclical relationship.”

The findings will be published in the May issue of Computers in Human Behavior.

Nearly 5 billion people use mobile phones worldwide, while the Internet is accessed by 3 billion users, the researchers said in background notes.

To explore how smartphone habits relate to mental health, the authors conducted a two-part study. First, they evaluated responses to a questionnaire about technology use and emotions, which was completed by 318 undergraduates.

Then, to examine cellphone use in a stressful situation, the team asked 72 students to spend five minutes writing about a personal flaw or weakness that made them uncomfortable. The anxiety-provoking writings were collected, under the false premise that they would be reviewed as part of a 10-minute psychology training exercise.

While the “review” was underway, one-third of the participants had no access to any technology; another third had access only to their cellphones; while the remaining third only had access to a simple computer game.

Those allowed to use their cellphones were found to have the lowest anxiety levels. They were 64 percent more likely to not experience anxiety than those with no technology access, the researchers said.

Among those in the cellphone group who did experience anxiety, 82 percent used their phones the entire waiting period. By comparison, only about half of anxious gaming participants played computer games the whole time.

Looked at in reverse, among those with cellphone access who didn’t feel anxious, only about half turned to their phones through the whole waiting period. And only one-quarter of anxiety-free gaming members played games throughout.

The investigators concluded that cellphones served as a kind of “security blanket” with “unique comforting capabilities.”

Still, the effect was relatively weak and short-lived, Panova and her co-author concluded.

Panova suggested that relying on cell phones to relieve anxiety may end up undercutting the development of more effective coping skills.

But the device itself is not problematic, she said. “It is the motivations for its use, and the manner in which it is used, that determine whether the user will experience negative consequences from it,” she added.

That point was seconded by Joe Bayer, who is finishing a Ph.D. in communication studies before beginning as an assistant professor at Ohio State University.

“It’s very important that readers not take away the idea that smartphones cause negative psychological conditions,” he said.

“Neither this research,” Bayer added, “nor the larger body of research suggests such a negative, causal effect. There were will always be anxious people, and these people are likely to use technologies in ways that reflect — and maybe amplify — these underlying conditions.”

More information

There’s more on stress at the U.S National Institute of Mental Health.





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5 Metabolism-Boosting Tricks That Work for Life

Photo: Getty Images

Photo: Getty Images

Good news, ladies: There are tried-and-true tricks (that won’t disrupt your lifestyle) to maximize your burn from a.m. to p.m. Take advantage of any or all of these five easy power-up hacks.

RELATED: 20 Ways to Torch 200 Calories

1. Don’t sit still

Fidget, stand, and chew gum; these types of activities, termed NEAT (nonexercise activity thermogenesis), have been shown to help torch an extra 300 to 2,000 calories per day.

2. Become a fan of green tea

Studies indicate that green tea can increase metabolic rate by 4 to 5 percent. Feel free to go for seconds—it has only 2 calories per cup (sans sweetener, of course).

3. Drink more water

A German study discovered that downing two 8-ounce glasses of H2O improved calorie burning by 30 percent in as little as 10 minutes, and the effect lasted for more than an hour.

RELATED: 17 Ways to Burn More Calories All Day

4. Pucker up

Add fresh lemon juice to your tea or water—it’s loaded with vitamin C. Arizona State University researchers found that exercisers who don’t get enough C may zap 25 percent fewer calories during a workout.

5. Get silly

A classic study published in the International Journal of Obesity revealed that laughing sparks a small increase in calorie burning. (We did the math: Fifteen giggly minutes melts up to 40 calories!)




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Cable One-Arm Triceps Extension

 

Target and strengthen your arms with the cable one-arm tricep extention.

The Move: Cable One-Arm Triceps Extension

Why: Isolating the triceps one arm at a time with cable extensions helps concentrate on the triceps muscle and ensures continuous muscle tension throughout entire exercise.

How: With your right hand, grab a single handle attached to the high cable pulley. Stand directly in front of weight stack. Now pull the weight down so that your upper arm and elbow are locked into the side of your body. Your upper arm and forearm should form an acute angle (less than 90 degrees). You can keep the other arm by the waist and can have one foot in front of the other for better balance. This will be your starting position. As you contract the triceps, move the single handle attachment down to your side until your arm is straight. Breathe out as you perform this movement. Squeeze the triceps and hold in this contracted position. Slowly return handle to starting position.

Nail it: You can also use exercise bands to perform this movement. To execute this move properly, only your forearms should move. Your upper arms should remain stationary at all times.

 

Workout by: Brooke Stacey

Photography: James Patrick

NEXT: Try this upper body workout for a full body activation.

 

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Close-grip ball push-up

 

Target and strengthen your arms with the close-grip ball push-up.

The Move: Close-Grip Ball Push-Up

Why: This is an advanced total body move that works not only triceps but pecs, delts and core as well.

How: Secure the ball for minimal movement during exercise. Get in standard push-up position with hands on medicine ball under chest. Your left thumb and forefinger should touch your right thumb and forefinger. Brace your core with arms fully extended and keep elbows close to body. Slowly lower yourself towards Swiss ball. Once your chest touches the ball, press back to starting position. Exhale breath on push-up.

Nail it: Keep your core tight and engaged throughout entire exercise movement as if you were doing a plank. In order to get full body muscle activation during exercise, dont let back sway.

 

Workout by: Brooke Stacey

Photography: James Patrick

NEXT: Try this upper body workout for a full body activation.

 

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Triangle Push-Ups

 

Target and strengthen your arms with triangle push-ups.

brooke-stacey-arm-workout-triangle-push-up-1 - Women's Health and Fitness magazine

The Move:
Triangle Push-Ups

Why: The triangle push-up gets its name from the position of your hands. Mastering this movement with a modified position of knees on the ground is recommended to keep proper form. The triangle push-up is an excellent total body and core exercise with emphasis on triceps.

How: Begin the move by positioning hands on the mat directly under chest with fingers spread and thumbs and forefingers touching, making a triangle shape. Straighten legs in a plank position (harder) or knees on ground (easier). Make sure the back is flat and abs are engaged as you bend the elbows, lowering until your chin or chest touches the mat. At the bottom of the movement your elbows will naturally flare out to the side. Press back up to starting position while keeping a rigid torso through entire movement.

brooke-stacey-arm-workout-triangle-push-up-2 - Women's Health and Fitness magazine.

Nail it: If you can’t go all the way down to a full push-up, go as far as you can and work your way up to a full push-up as strength grows. Exhale breath as you push back up to starting position.

 

Workout by: Brooke Stacey

Photography: James Patrick

NEXT: Try this upper body workout for a full body activation.

 

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Seated triceps dumbbell press

 

Target and strengthen your arms with the seated triceps dumbbell press.

The Move: Seated Triceps Dumbbell Press

Why: Doing seated dumbbell triceps presses allows you to concentrate specifically on strengthening. Isolated tricep exercises build muscle.

How: Sit down on a bench and grasp a dumbbell with both hands and hold it overhead at arms length. Keeping your upper arms close to your head (elbows in) and perpendicular to the floor, lower the resistance behind your head until your forearms touch your biceps. Go back to the starting position by using the triceps to raise the dumbbell. Breathe out as you perform this step.

Nail it: The upper arm should remain stationary and only the forearm should move during exercise. Breathe in as you perform this step. Keep good posture throughout exercise with core engaged and shoulders down and back away from neck.

 

Workout by: Brooke Stacey

Photography: James Patrick

NEXT: Try this upper body workout for a full body activation.Target and strengthen your arms with skullcrushers.

 

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How to perform skullcrushers

Target and strengthen your arms with skullcrushers.

 

The Move:
Skullcrushers

Why: Skullcrushers are a great exercise to superset with other tricep exercises and work well as the second exercise because you can go fairly heavy with weight.

How: Lie down on bench and bring weight up. Keep arms straight up to ensure you’re working against gravity. Only bend your elbows. Avoid allowing upper arms to move. If they do, allow some of the load to your shoulders. Lower the weight under control, using a speed that is deliberate and consistent. Keep wrists straight and strong. Power weight back up but stop short of full extension to allow constant tension on muscle and no rest at the top of movement.

Nail it: Keep your elbows in tight and avoid elbow flare to ensure triceps do the bulk of the work. Allowing your elbows to flare reduces the triceps workload.

 

Workout by: Brooke Stacey

Photography: James Patrick

NEXT: Try this upper body workout for a full body activation.

 

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Triceps overhead extension with rope

 

Add the tricep overhead extension to your arm workouts and tone.

The Move:
Triceps overhead Extension with Rope

Why: Keeping your body in proper standing alignment with core stabilisation and isolation of the overhead tricep extension is an excellent total body exercise with focus on the tricep muscles.

How: Attach a rope to a high pulley. After selecting an appropriate weight, grab rope with both hands and face away from the cable. With a slight bend in hips, lean forward slightly and engage core. Position your hands behind your head with elbows pointing straight up. Your elbows should start out flexed. This is your starting position.

To perform movement, extend through the elbow while keeping the upper arm in same position. Push your arms forward.

Squeeze your triceps at the top of the movement and slowly lower the weight back to the starting position.

Nail it: Keeping elbows in close to head while performing the movement will help with the isolation of the tricep extension. Keep your core engaged with shoulders down and back away from neck.

 

Workout by: Brooke Stacey

Photography: James Patrick

NEXT: Try this upper body workout for a full body activation.

 

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Tricep pushdown - rope attachment

 

Target and strengthen your arms with the tricep pushdown.

The Move:
Triceps Pushdown – Rope Attachment

Why: This is a strength, cable machine isolation movement for triceps to help target and strengthen.

How: Attach rope to a high pulley. Grab with a neutral grip, palms facing one another. Standing up with torso straight and very small inclination forward, bring your arms up to 90 degrees. This is your starting position.

Using the tricep, bring the rope down. At the end of the movement the arms are fully extended.

Nail it: The upper arms should always remain stationary next to your torso and only your forearms should move. Exhale as you perform this movement.
Keep your core engaged through the entire exercise as well as shoulders down and back away from your neck.

Workout by: Brooke Stacey

Photography: James Patrick

NEXT: Try this upper body workout for a full body activation.

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