Strength Training Principles and Guidelines: Part Four
Almost any form of exercise will stimulate strength and muscle development. Unfortunately, misconceptions, myths, and misunderstandings plague the fitness industry, especially regarding strength training. There is a huge attrition rate among those starting a strength training program primarily because most people are not taught the principles essential for a safe and effective program.
This article is part four of a five-part series discussing the fundamental principles and guidelines of a safe and effective strength training program. This article outlines how much weight you should use and the number of repetitions you should do for desired results. I'll also explain how to increase your weight to stimulate further gains gradually. The previous article, part three of this five-part series, discussed the importance of proper lifting technique, exercising through the full range of motion, the appropriate exercise sequence, and the correct number of sets to do for what you're trying to achieve. The following exercise guidelines are essential for your safety and the effectiveness of your strength training program.
Relationship Between Resistance and Repetitions
Understanding the inverse relationship between exercise resistance and exercise repetitions is essential. When exercising to the point of muscle fatigue, most people can complete about six repetitions with 85 percent of maximum resistance. "Maximum resistance" is the weight you can lift once in good form. Most people can complete eight repetitions with 80 percent of maximum resistance, 10 with 75 percent of maximum resistance, and 12 with 70 percent of maximum resistance.
For most people (those seeking muscle strength and tone), 8-12 repetitions with 70-80 percent of maximum resistance is a sound training recommendation for strength and muscle development. Most people do not bother finding their one-rep maximum for each lift to obtain the appropriate weight for each set of 8-12 repetitions. This would get pretty tedious, especially when you are learning a new exercise.
The best and easiest way to determine how much weight you should use on each lift is to take your best conservative guess. After warming up using a light weight for 12 or 20 reps, choose a weight for your next set that will challenge you for your goal number of repetitions. If you are unsure what that weight should be, select a weight that is likely too light, rather than making the mistake of going too heavy and not reaching your desired number of repetitions. For example, say you are trying to decide the proper weight for 12 repetitions on the Shoulder Press. Choose a light, conservative weight slightly heavier than your warm-up and do the set 12 times (repetitions or reps). When you come to your twelfth repetition, if you can perform another repetition or two, while still using good form, you might as well do that (to promote blood flow to the shoulder muscle further). Since you know that the weight you chose was a little too light (your 12th repetition was not a challenge), next time choose a slightly heavier weight that will challenge you for all twelve repetitions, or whatever your goal number of repetitions happens to be.
Important Note: Your strength may gradually decline as you progress through your routine. For example, on your first set (after warm-up) of the Bench Press, you did 12 reps with 150 pounds--this would force a good amount of blood and fatigue your chest muscles. If you're trying to figure out the appropriate weight for 10 reps for your second set, you may or may not want to increase the weight slightly. That is, 150 pounds might be challenging for 10 reps because your muscles are a little fatigued from the first set. So, try to be intuitive and pick an appropriate weight based on the weight you used on the previous set and how tired your muscles feel.
It is essential that the weight you choose for each set challenges you for all of your desired repetitions, whether the number is 6, 8, 10, or 12 repetitions. Similarly, if you choose a weight that does not allow you to perform all the desired repetitions in good form, do as many as possible and choose a lighter weight for the next set. It is a good idea to record the weights you use on each lift so that when you perform the same exercise at another workout, you know what weight to use on each exercise set.
In general, if your goal is to get notably bigger and significantly stronger, you will want to do fewer reps with more weight, so 6-10 reps is a good target for you on most exercises. Sometimes, even as few as two reps will be enough on exercises like the bench press and squats. If you are more concerned with creating muscle tone, your rep number should be 10-15. Most people's goal is a combination of muscle strength, size, and tone; the target number for these folks should stay between 8 and 12 repetitions. Just so you know, however, that whether you are going for six reps or 15, always pick a weight that will challenge you for the complete set.
Progressive Resistance
As your muscles adapt to a given exercise resistance (weight), that resistance must gradually increase to stimulate further gains. The key to strength and muscle development is progressive resistance, which is also called "exercise progression," or "the overload principle." This is the gradual and continual addition of weight to the exercise over time, as the previous weights become too easy to lift, so your muscles are continually forced to work harder and thus increase muscle strength, size, and tone. For example, you might start pressing (lifting) 20 pounds in the Front Shoulder Press. After two or three weeks, you may find that pressing 20 pounds has become too easy, and that you can do more than your chosen number of repetitions with little or no difficulty. The progression principle demands that as soon as the weight you are using is no longer a challenge, you must raise it. You progressively increase the weight you use for a lift to continue to gain muscle tone, size, and strength. You must increase the weight only if the previous weight is too light; increasing the weight to push yourself harder can result in poor form and increase the risk of injury.
Please understand that an increase in repetitions is an increase in strength. Many people think strength gains are only obtained when they increase the weight. But if you have increased the number of repetitions you can do with good form, you have increased your strength and more than likely, your muscle size and tone.
Please check back for Part Five, where I'll discuss exactly how to avoid overtraining. Until then, be sure to use the right amount of weight and number of repetitions for each set you do so you can achieve the results you desire. Good luck, and enjoy all the incredible benefits of strength training.










