160418 Adrenaline[1] lifting

160418 Adrenaline[1] lifting

Lifting more than normal is not unusual under certain circumstances. This is frequently seen on the platform by athletes who make excellent use of their powers of generating positive result producing psychological and physical energy. In the gyms though, unless testing for a one repetition maximum, this is not a good training method.

The release of adrenaline, a hormone secreted by the adrenal medulla when stimulated by the central nervous system responding to stress, comes with limitations. It is not produced in great quantities and what is there is in limited supply until the body manufactures more over a period of time. If this is used too often, and excessively, it will eventually cause the body to use it but not realize the benefits.

This happens because the body begins to tolerate the initial stress response that caused the secretion in the first place and then disregards it. But the substance has still been released into the system. An increase in heart rate, blood pressure, carbohydrate metabolism and greater heart output results. All of which are stress responses. Essentially the body habituates to the influx of adrenaline and the energy that it provides is no longer realized by the lifter.

Left unattended these cause high blood pressure and heart problems.

[1] A hormone secreted in the adrenal gland that raises blood pressure, produces a rapid heartbeat, and acts as a neurotransmitter when the body is subjected to stress or danger

090418 Motor unit recruitment

090418 Motor unit recruitment

The size principle states that slow fatigue resistant motor units are recruited first. This theory serves to demonstrate the relationship between the motor unit twitch force and the recruitment threshold of the fibers.  For example these first muscle fibers are not able to sustain a lasting power output and give out rapidly. They do not have the ability to produce great force. Thus after lifting a certain number of repetitions the original fibers are fatigued and not producing the necessary force to continue. New fibers are then called upon to lift the weight. These new fibers are faster and much more powerful but also fatigue much quicker than the original fibers. These soon become exhausted and of limited use in the lifting process. But the advantage of this recruitment process is the majority of the muscles’ fibers have contributed all they can to the lift.  In other words the fibers have all been exhausted and will have to repair the damage caused by the lift in order to become stronger and better able to tolerate the resistance. The next time this load is placed upon them, they will have accommodated and grown stronger.

Training hint:

Training in such a manner as to inhibit the weaker fibers and going straight to the fast acting powerful ones is the key to instant and explosive force and power. Conditioning the CNS to bypass the non-power fibers occurs in some of the elite strength athletes. This takes the body a long time to make this adaptation and requires a deep dedication to the strength sport-more so than many people have at the lower levels of participation.

020418 Sport and lifestyle activity-range of motion exercising

020418 Sport and lifestyle activity-range of motion exercising

Your joints and muscles are meant to function within standardized degrees of movement, commonly referred to as the range of motion (ROM). The stronger you are within these ranges, the better protected you will be in preventing injuries from occurring. Therefore when doing your exercise routine keep in mind the following two guidelines:

  1. You gain the most strength within the range of motion (ROM) at which you exercise.
  2. The smaller the range of motion you in the joint, the less will be the carry over strength throughout the rest of the movement.

The basis of every quality strength training or fitness program relies, in part, on these two premises. As an example, let’s look at the squat while explaining these principles.

Many lifters do short range squats, known as high squats, in the gym. They get into a machine or in rare cases under a bar and drop down a few inches and call it good. In many instances this isn’t even to a parallel position, let alone below parallel where they should be before starting back up again. Depending on the load of the bar or on the machine, strength may be increased within this small range of motion but its unlikely this will happen.

This range of movement is too little and does not support normal living activities such as sitting down in a chair and then getting back up. If the strength is not developed within a range that is vital to living an active lifestyle then it is not useful. This group of fitness enthusiasts would be better served by going deeper in their squats, thereby getting a transfer of useable strength into their daily lives. This naturally leads in to the second principle.

An individual or strength athlete will become stronger when training the full range of motion. This expands the strength curve and transfers more useable muscle activity across greater degrees of the joint angle. Greater degree angles of strength protect the joint from injury, especially at the far ranges of motion.

The take home message is don’t cut yourself short with limited range of motion exercises.

260318 Lower your blood pressure

260318 Lower your blood pressure

High blood pressure is often referred to as the silent killer because its effects are rarely felt until the disease has progressed to a dangerous level.

Here is a list of four things that you can do to potentially lower your blood pressure.

If you weigh too much, lose weight.

Look at yourself in the mirror. Can you see the fat hanging off your stomach and sides? Can you pinch more of an inch on your sides? If so, you need to lose weight. Can you see your toes? If not, you need to lose weight. Is your body mass index in the obese range? If so, lose weight.

With a 10% reduction in your weight, you will notice reductions in your blood pressure numbers.

Start becoming more physically active.

If your prime source of entertainment is watching TV, working on the computer, or socializing at the local tavern then it is time to get off your butt and get moving. Being physically active goes hand-in-hand with losing weight and they each complement one another.

Reduce eating foods that are high in salt and sodium.

Began with an inventory of the foods in your house. Look at the labels. Are they high in sodium? Do you have stacks of potato chips in the cupboards? Is there bacon and sausage in your refrigerator?

You can reduce the salt you eat by cooking your own food and not adding salt when you eat at the table. Canned vegetables, according to their labels, contain an overly high amount of sodium. You can eliminate much of this by rinsing the vegetables before you cook them. This removes much of the salty juices that contribute to the high salt content of the food.

Cut back on the alcohol you drink.

Alcohol lowers your inhibitions and generally, when you are drinking, you are with friends socializing and eating crap food. More than likely the food you eat during these times contains a lot of fat and salt.

If you already have high blood pressure and are taking medications, do not stop these medications until you talk with your doctor.

120318 Several shorter workouts per day may help control pre-hypertension

120318 Several shorter workouts per day may help control pre-hypertension

A small study reported in Medicine and Science in Sports and Exercise found that several shorter exercise periods spaced four hours apart were more beneficial than doing one long session. The participants in the study walked briskly for ten minutes, three times a day with four hours separating each session.

The next day they walked a continuous thirty minutes. This alternating pattern continued throughout the length of the study as did constant around the clock blood pressures monitoring for each person. The results clearly showed that several shorter ten-minute sessions during the day created lower blood pressure readings and fewer high blood pressure spikes throughout the day.

Earlier research has shown that short accumulative sessions of exercise help to control weight, increase bone mineral density, and assist in lowering both blood pressure and blood sugar levels, along with decreasing the cholesterol levels. However, these are not the only beneficial aspects of exercising, there are others.

Exercise releases endorphins; the chemicals that make you feel good and counteract the negative effects of adrenalines brought on by stress. Endorphins work by relaxing the muscles and help to dilate the vessels in the circulatory system.

Further advantages of exercise result in the production of lower levels of stress hormones released into the body, lower increases in heart rate and blood pressure when under stress.

These non-intrusive, short time exercise periods help you to stay more consistent with your exercise compliance over lengthy periods. This means your health should continue to improve over time.

190218 Blood pressure, daily walking and the connection with being overweight

190218 Blood pressure, daily walking and the connection with being overweight

If you are overweight, then daily walking may not dramatically decrease your blood pressure. The healthy benefits that walking has on the blood vessels of a normal weight person may be lost on the overweight individual.

In general, terms this means that your arteries are not widening and the blood flow is not improved with walking, thus your blood pressure may not change to more optimum numbers.

Researchers at the University of Texas Southwestern conducted a study that analyzed over 35,000 Caucasian men and women. Each person in the study had regular checkups that included measurements of their Body Mass Index (BMI), and readings of their systolic blood pressure each visit. Additionally these participants exercised at each visit so their fitness levels could be assessed. The results may give anyone who is overweight a reason to reassess their situation.

The results were published in the American heart journal and they revealed that a normal weight person had an average of 12 mmHg lower systolic blood pressure than one who was obese. The blood pressure of the fittest was only 6 mmHg lower than for those who were least fit. Still, that wasn’t all they found.

After analyzing the blood pressure, BMI, and fitness data of the participants, they found that physical fitness was an important element in lowering blood pressure in those of a normal weight person. However, it was not as effective of a component in those who were overweight. Interestingly enough, many in this overweight group were physically fit yet their blood pressure was still high.

The take-home message here certainly indicates that diet alone may not help lower your blood pressure. The combination of losing weight, by engaging in regular exercise, and calorie counting will need to be in place before you begin to notice the beneficial effects of exercise on lowering your blood pressure.

120218 Blood pressure statistics and exercise suggestions for your information

120218 Blood pressure statistics and exercise suggestions for your information

By Danny M. O’Dell, M.A. CSCS

High blood pressure is the direct cause of thousands of needless deaths a year. Here are just a few of the facts about hypertension.

  • 878,421 people died if cardiovascular disease and stroke in 2000. Or one in CVD for every 313 Americans who died.
  • 90% of 55 year olds will develop hypertension in their lifetime.
  • 50 million Americans have Hypertension, one out or every five of us!
  • The higher the blood pressure the higher the risk of heart attack, heart failure, stroke and kidney disease.
  • In adults over 50 systolic numbers over 140 is an important number to stay below.

Systolic/Diastolic

  • Optimal: under 120 under 80

See a doctor for any of the following:

  • Pre-hypertensive: 120/39-80-89
  • 140-159 or 90-99
  • 160-179 or 100-109
  • 180-209 or 110-119
  • 210 or more 120 or more

Signs of hypertension:

  • Fatigue
  • Confusion
  • Nausea or upset stomach
  • Vision changes or problems
  • Excessive sweating
  • Paleness or redness of the skin
  • Nosebleeds
  • Anxiety or nervousness
  • Palpitations
  • Ringing or buzzing in the ears
  • Impotence
  • Headaches

Stressors

  • Lack of Exercise
  • Smoking

Weight control

  • Diet
  • Alcohol
  • Loud, consistent noises

High blood pressure causes:

  • Death from stroke
  • Coronary events
  • Heart failure

Mitigating measures:

  • Reduce sodium intake
  • Maintain adequate intake of potassium
  • Follow the DASH diet
  • Maintain adequate intake of calcium and magnesium
  • Reduce dietary intake of saturated fats and cholesterol
  • Smoking-cut back or stop
  • Weight control-get within normal range
  • Diet-follow doctors advise
  • Stressors-eliminate or mitigate
  • Alcohol-cut back
  • Loud, consistent noises-protect yourself

DO NOT STOP TAKING YOUR BLOOD PRESSURE MEDICATION UNLESS AND UNTIL YOU CONSULT WITH YOUR DOCTOR

Regular exercise:

  • Slows progression of renal failure
  • Prevents progression to more severe hypertension
  • Reduces all-cause mortality

Exercise methods used to control or reduce high blood pressure:

  • Resistance training
  • Muscular endurance
  • Circuits
  • 100’s
  • Rapid quick sessions
  • W:R of 1:1

Cardio training

  • 5-7 times per week
  • 20-40 minutes per session
  • 40%-70% @ maximum heart rate
  • 5-7 times per week
  • 10 minute bursts
  • Total time-30-45 minutes
  • 40%-70% @ maximum heart rate

“Losing 10 pounds will help remarkably” “If you don’t have time for physical activity, you will find time for illness.” Dr. Edward J. Roccella, coordinator of the National High Blood Pressure Education Program.