Zamoření bytu štěnicemi - pozor na histamin

  • Posted on: 2 February 2022
  • By: admin
štěnice a histamin

Pokud štěnice napadnou váš byt, čeká vás nelehký úkol jak se jich zbavit. 

Štěnice domácí se množí velmi rychle, ve dne je prakticky neaktivní, v noci když lidé a domácí zvířata spí se vydávají na "výpravu" za krví.

Má se za to, že některé druhy štěnic by mohly přenášet např. bakterii Trypanosoma cruzi (původce Chagasovy choroby) případně bakterii Bartonella quintana (původce tzv. Zákopové horečky). Toto tvrzení se ovšem laboratorně nepotvrzuje.
Kousnutí a následné sání krve od štěnice ovšem způobuje různé závažné dermatitidy (kožní onemocnění) v reakci na přítomnost proteinu nitroforin ve slinách štěnic, který zabraňuje krevním destičkám ve srážení krve.

trus štěnic obsahuje velké množství histaminu

Některé studie tohoto nepříjemného parazita nyní ukazují na další problém, který vzniká po zamoření obydlí štěnicemi.
Vědci zjistili, že trus štěnic, který se běžně, při jejich výskytu, objevuje na místech, kde štěnice sají krev, nebo se zdržují, obsahuje velké množství hormonu (protein) histamin.
Histamin je u citlivých jedinců spouštěč nejrůznějších akutních zánětlivých reakcí jako je např. kopřivka, bušení srdce, průjem, anafylaktický šok, respirační potíže apod.

Vědci učinili pokus a na vzorku bytů z nichž některé byly zamořeny štěnicemi, jiné nezamořeny odebrali vzorky prachu v místnostech. Tyto vzorky potom testovali na zvýšenou přítomnost histaminu.
Výsledkem jejich zkoumání bylo, že byty, v kterých se štěnice nevyskytovaly obsahovaly stopové množství histaminu, pro člověka nepostřehnutelné.
V bytech, kde se štěnice vyskytovaly byly nameřeny hodnoty histaminu v průměru více než 54 μg/100 mg prachu. Toto množství je srovnatelné s uvádením množstvím histaminu v kysaném zelí, které se nedoporučuje při histaminové intoleranci konzumovat.
Vzorky prachu použité jako vzorek byly jemně prosáté a dá se tedy říct, že histamin se vyskytuje v tak jemné podobě, že jde prakticky o poletavý prach, který je velmi snadné vdechovat.

Na závěr vědci upozornili na fakt, že histamin se v této koncentraci v bytech vyskytoval i po dezinsekci prováděné vysokou teplotou - nad 50°C. Ani to nevedlo ke snížení jeho množství. Další poměrně důležitá věc je, že histamin je velmi stálý a ani po měsících nedochází k jeho degradaci.

zdroj:DeVries ZC, Santangelo RG, Barbarin AM, Schal C (2018) Histamin jako emergentní vnitřní kontaminant: Akumulace a perzistence v domácnostech zamořených štěnicemi. PLoS ONE 13(2): e0192462. https://doi.org/10.1371/journal.pone.0192462
 

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If you play sports or just need to be stronger together with your
urgent strength in general, then it’s never a foul thought to offer
your self publicity to urgent from totally different angles.
Your buttocks should stay flat on the bench during the bench press.
Do Not emulate the powerlifter type of arching
your back a lot that your glutes raise off the bench. Your eyes ought to be roughly aligned with the front of the barbell rack uprights.

This will permit you to distribute the load throughout your chest, shoulders, and triceps
higher and is mostly the most secure position in your shoulder girdle.
Plus, the unrack and press tend to be a little simpler to grasp as
properly. And speaking of racking, if you’re training alone, then it’s often simpler to rerack
a heavy decline bench press compared to an incline and flat bench press.
Nonetheless, this compound lift advantages exercising several
higher physique muscle tissue. Nevertheless, one of its benefits
over the barbell bench press is that it also works your arms and shoulders.

Move the bar backward steadily till you feel the rack
uprights, then lower the bar to the barbell
rest. This exercise works each of these muscle teams differently, and it targets some more than others.

Moreover, the athlete ought to pay consideration to their hand positioning.
Their hands ought to be in the center of the dumbbell to attain a
balanced weight distribution. Make well being &amp; health your prime precedence with tips about workouts,
healthy consuming, wellness and more, straight from
the specialists. Men’s Fit Club was began with the objective of empowering males to get essentially the most out of their lives.
If you loved this submit, check out our comparisons of other popular exercises below.

This switches you from eccentric-concentric contraction to isometric contraction. Overall,
it's good for constructing energy, as isometric contraction is
great for getting stronger. With resistance bands, the more they stretch, the extra resistance they have.
With that, within the backside vary of the bench press, the
band has much less pressure, nearly to a negligible level, so the burden load
just isn't really tougher than it normally can be with out the band.
Nevertheless, as you press up, the band stretches, so when you reach the mid to high vary, the band adds resistance so what would
usually be the easier a part of the carry becomes harder.

Control the tempo of the motion (e.g., three seconds to decrease, 1 second to press up) to extend
time under rigidity. When lifting heavy, always use a spotter or security pins on the bench rack for added security.

No matter which one you do, make certain to excellent the shape earlier than stacking on the weight.
Skilled coaches advocate for 7-9 hours of sleep for
athletes to ensure restoration and enchancment in pressing
exercises. Instead of overlifting, scale back the load you're lifting
till you probably can complete the exercise without any bouncing.
Choosing a weight that's too heavy typically results in different common mistakes, which might undercut your efforts or lead to injury.
If you begin with the proper weight for you, you'll be much less more doubtless to encounter the other points mentioned below.

Dumbbell presses could also be safer as they permit a more natural motion and prevent overloading one aspect, decreasing the
chance of damage with correct method. Eat a balanced food plan with ample protein to
support muscle repair and progress. Experts suggest zero.7-1g of protein per pound of body weight
every day. Hydration and micronutrients are pivotal for
muscle operate and recovery. Mix presses with stretching and mobility work for comprehensive
health.
Experiment with totally different inclinations, grip widths, and bar paths to search out what feels greatest on your body.
This is because when the bench is at an incline,
your higher pec muscle fibers shall be instantly below
the road of drive. In the flat bench press, the line of pressure passes
by way of the center of your chest muscle tissue, and this is
why the flat bench press is such a great common chest builder.
Newbies can benefit from bench presses with out weight on the bar to heat up, get a really feel for
the bar, and study correct type. If you're extra advanced and bench
press with heavy weight, use a spotter. Additionally, a pair of
weightlifting gloves can give you a greater grip. Relying on your goals, there are totally different variations
of bench presses that work slightly different muscles, too.

So, when selecting a weight load, you would possibly
be essentially catering to your energy within the bottom range of the motion. With partial reps, you're catering to the top range only, so you
can go heavier. Lifting weights is not all about your muscle tissue, it’s
about your bones too! Lifting weights is great for your&nbsp;musculoskeletal system as a complete.

Additionally, the weight should be kept immediately above your chest to maximise
the primary focus in your pectoral muscle tissue. Proper hand position is an integral
a part of the dumbbell bench press. It will allow you to maintain grip energy and maintain the dumbbells in the right position. Additionally, an athlete will use their core and again to stabilize their body while performing a dumbbell bench press.
Many athletes carry out the dumbbell bench press without a
spotter. This is acceptable as long as they use low to medium amounts of weight.

Conversely, the bench press typically permits heavier lifts, leading to potential mass gains, and serves as a benchmark
for power. Each have distinct benefits tailor-made for numerous objectives, and integrating both can lead to
a complete upper physique growth. Sure, dumbbell presses can be an alternative,
focusing on stabilizing muscles and offering variation,
but shouldn’t fully exchange bench presses if seeking maximal
energy gains. Usually speaking, advanced lifters should be ready to
flat bench press with dumbbells that weigh one hundred twenty to 140% (both dumbbells combined)
of their body weight for a single repetition. Whether Or
Not you would possibly be bored of barbell bench presses,
or just want to add some variation to your higher physique
workouts, the dumbbell bench press is an effective choice.

The dumbbell bench press is a compound lift and requires a quantity
of steps to carry out accurately. To maximize their performance on a dumbbell bench
press, an athlete must protect their focus and grasp every phase of the dumbbell bench press.

Since the dumbbell bench press is a compound carry,
it is essential to know every exercise stage.
If you realize the individual phases of the exercise, then you
perceive how to practice and grasp the form of every one.
Longevity in training is not only in regards to the instant workout but in addition about the cumulative impact
of constantly secure practices. Listen to your body, and if a specific weight or range of motion causes discomfort beyond regular
muscle fatigue, reassess and modify accordingly.
As we mentioned, dumbbells are mentioned to offer larger activation of the pecs, yet not as great of a load can be used.

So, they are very efficient and most lifters use dumbbells as much if not more than barbells.
Usually they may use barbell for one primary lift (i.e.
flat bench or incline bench) and then dumbbells for the other urgent variations or chest exercises.

It’s beneficial for athletes hoping to overcome a plateau with the barbell bench press or looking to steadiness the chest muscles.
Moreover, this train offers athletes a greater range of movement than the traditional barbell press.
Bear In Mind to adjust the weight and repetitions primarily based in your health stage and
targets. This pattern workout routine incorporates the flat chest press as the primary
exercise and includes further workout routines to focus on different muscle teams in the higher body.

It provides a balanced approach to energy and muscle improvement.
One of essentially the most impactful workouts to build energy in these muscular tissues is the flat bench dumbbell press.

The close grip barbell bench press shifts emphasis to your triceps.
It additionally hits extra of your inside chest&nbsp;(get that
good separation between left and right side).
The close grip barbell bench press not only develops your triceps amazingly well, but it will additionally enhance your power in the usual grip
bench press. There are many variations of the chest press, corresponding to incline and decline bench press.

The incline press additionally hits the anterior head
of the deltoid muscle of the shoulders or the front part of your shoulder.
The guillotine bench press works the identical muscles as
any bench press (chest, shoulders, triceps). Nonetheless, as a result
of unique path of the bar and the greatest way the elbows are flared,
you could be minimizing the anterior deltoids and maximizing your upper chest (clavicular head) considerably.
In reality, some EMG studies really show it’s better
than some other bench press for complete pec major activation. The solely issue is, it’s extra dangerous considering you're reducing the bar to your neck and may
be more durable on the shoulders because you elbows are flared.

Sure, performing the dumbbell bench press can affect your mood—the dumbbell bench press and exercise
generally impacts your brain. Exercise causes your brain to launch endorphins which may positively impression your mood.
Additionally, exercise can improve your sleep, and getting
higher-quality sleep can put you in a better temper. Shifting the
burden too shortly can cause injury, and also you won’t maximize your features.

You Will want to select dumbbells which would possibly be lighter than you'd use for a flat dumbbell bench press and
when performing a barbell incline press. If you are unsure of the proper weight, start light and work your method
up till you are feeling challenged however can still do a complete set utilizing proper kind.
You might just stick to the flat bench press and possibly the incline
bench press. The barbell bench press will all the time be the principle
lift for strength applications. It will put your chest, shoulders and
triceps in the biggest place to carry heavy and use
a extensive variety of movement. The normal grip, which is 1.5x your shoulder width, is the best for total improvement of the chest, shoulders and
triceps. On prime of building well-rounded energy, you’ll additionally build fuller pecs by implementing flat,
decline, and incline bench presses into your workout program.

The pectoralis major is a big muscle that covers the chest from
the clavicle, the entire size of the sternum
and the cartliages of the first six ribs close to the sternum.
The fibers converge and fasten to the humerus nearly in the identical place because the deltoid.
In the shoulder girdle, the pectoralis minor and serratus
anterior are the main muscles concerned. The pectoralis minor is a small muscle located on the higher chest and is covered by the pectoralis major.
The serratus anterior lies on the outer floor of the ribs at the sides (just beneath the armpits) and is covered by
the scapula at the rear and the pectoralis main in entrance.
In the elbow joint, the triceps brachii, a big muscle which covers the
complete back side of the arm, is the one main muscle involved.
It has three sections, the lateral head on the outer surface on the again of the upper
arm, the medial head on the internal aspect of the back of the upper arm, and the long
head within the rear of the higher arm.
Each variation adjustments the exercise to target a
special part of the body. This is a typical mistake when athletes are bench urgent an excessive amount of weight.

During a dumbbell bench press, the weights should keep above the athlete’s chest and transfer straight up and down. Using
an extreme amount of weight can forestall an athlete from utilizing
conventional dumbbell bench press type, nevertheless it can also be dangerous.

Your chest or the pectoral region consists of 4 muscles- pectoralis
main, pectoralis minor, subclavius, and serratus anterior.

These muscles are liable for rotating and flexing the
upper limb and maintaining its vary of motion and flexibility.
I actually have seen folks that bench press 300+ lbs however can't even stand up 100lb dumbbells
during their press. If you are only doing dumbbell presses you must positively mix in bench press sooner or later and nonetheless do your dumbbell presses.
There is not any actual conversion for dumbbells to barbell bench press nonetheless you will get a considerably rough quantity to start out with and it
can be fun to attempt to predict your max just begin light
to be protected. Read further as we focus on the tactic to make extreme
features in your bench press coming from dumbbell presses.
Maintain the dumbbells with a parallel grip, palms facing forward.three.

The Flat Dumbbell Bench Press is a staple train in lots of health enthusiasts’ routines, however it’s essential to perform it safely to forestall damage
and maximize positive aspects. Correct form is the cornerstone
of security, and it begins with the setup. Guarantee that your toes are
firmly planted on the ground, your back is flat on the bench, and the dumbbells are positioned accurately initially of the raise to maintain up steadiness and management.
Whether your goal is to gain muscle mass or improve your general
health, the flat bench press is an train you want to incorporate into your exercise
routine.
After the athlete is seated on the bench, they need to firmly grasp the dumbbells and carry them onto their
knees one at a time. As the athlete lays down, they should "kick"
the dumbbells up above their chest. If you might
have shoulder accidents, it’s essential to seek the guidance of with
a healthcare professional or a certified health trainer for exercises which are appropriate
on your particular situation. Taking the time to
heat up properly enhances efficiency and reduces the risk of
pressure or harm.
Having a coaching associate handy the dumbbells off to you is healthier.
These allowed you to hold the dumbells off an overhead bar by
hooks so that you simply can seize them from the reclined place on the bench.
Sadly, the producer discontinued them so, unless you could have a partner or can recruit a pleasant particular person at the gym, you’re
by yourself. With over 15 years of expertise in the fitness trade, Eugene combines his intensive information of energy
coaching and dietary science to empower people
on their journey to wellness. His philosophy centers across the perception that anybody can achieve their fitness
objectives through dedication, correct guidance, and a holistic approach to well being.

He’s been formally reviewing sneakers and training
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As the bench is inclined, the activation of the middle and lower pec decreases, whereas the higher
pec has to bear the brunt of the work together with the entrance deltoid.
If your toes usually are not comfortably flat on the floor,
use blocks or weight plates quite than placing your legs on the bench, which reduces
stability. You can use these charts that will help you get a good suggestion of how a lot you'll have the ability to raise.

Then, you'll be able to modify the weight as needed to swimsuit your
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