A brief snapshot of Insulin resistance and why it is important to avoid.
This condition causes the body’s muscles, fat and liver cells to improperly respond to insulin. The pancreas makes the hormone, insulin. This hormone helps the cells take in and use glucose which in turn is a fuel used by the body to function. If there is not enough circulating insulin, excess glucose builds up in the bloodstream and increases the potential for developing diabetes. It is in everyone’s best interest to have as much lean muscle mass as possible to possibly avoid this serious medical condition, especially as you get older.
One of the unwelcome conditions of aging is muscular frailty, also known as sarcopenia. Without strong muscles, coordination and balance problems begin to appear. These problems may be held at bay by greater lean muscle mass. A new study reports that increasing skeletal muscle mass by as little as 10%, is also associated with an 11% reduction in the body’s resistance to insulin and a 12% lower risk of developing transitional, prediabetes or diabetes.
Researchers from the University of California Los Angeles look at the data and 13,644 participants in the National Health and Nutrition Examination Survey (NHANES). Since these people were involved in the study between years of 1988 to 1994, the research is somewhat old. However when the muscle mass of one quarter of the participants was compared between those with the most muscle mass and those at the bottom with the least muscle mass, those with the greatest amount of fat three muscle mass were 63% less liable to get diabetes.
After making adjustments to leave out those with diabetes, the connection between muscle mass and improved insulin resistance became even stronger. According to the study, “increases in muscle mass above even average levels were associated with additional protection against insulin resistance and prediabetes.”
Not only is increasing your lean muscle mass important, but also losing weight helps to improve your metabolic health. Most of us already know that the fitter you are, the healthier you are probably going to be.
 Sarcopenia is the loss of muscle mass and coordination that results from the process of aging.
 Preethi Srikanthan, MD of the University of California Los Angeles, USA
Sport and lifestyle activity-range of motion 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.
Danny M. O’Dell, MA. CSCS*D