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    You are at:Home»Training»Weight training basics»Weight lifting tempo or repetition speed
    repetition speed weight lifting
    Weight training basics

    Weight lifting tempo or repetition speed

    krunoslavBy krunoslavDecember 18, 2021Updated:December 18, 2021No Comments5 Mins Read
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    What is tempo when lifting weights?

    Tempo refers to the speed with which you perform a repetition. In other words, weight lifting tempo refers to the speed at which you should perform the various phases of an exercise. It is specific to the three types of contractions (phases of an exercise): concentric, eccentric, and isometric.

    The concentric, or positive, portion of a lift occurs when you lift a weight against the force of gravity. The eccentric, or negative, portion of a lift occurs when you lower a weight in the direction of gravity. Finally, the isometric, or static, portion of a lift occurs when the weight is not moving up or down.

    For example, the concentric portion of a biceps curl takes place when you bring the bar up toward your shoulders. Alternatively, lowering the bar constitutes the eccentric phase of the lift. The isometric phase occurs at the top position and bottom portion of the lift because the weight is stationary at these points.

    Expressing lifting tempo as a four-digit number

    Tempo can be expressed as a four-digit number, separated by hyphens, in which the first number represents the concentric phase, the second number the isometric phase at the top of the lift, the third number the eccentric phase, and the fourth number the isometric phase at the bottom of the lift.

    weight lifting tempo

    In the example of the biceps curl, a tempo of 1-0-3-0 means that the concentric phase lasts 1 second, the isometric phase at the top of the lift is imperceptible, the eccentric phase lasts 3 seconds, and the isometric phase at the bottom of the lift is imperceptible.

    Let’s use the bench press example. For a training tempo of 1-0-2-0, you should:

    • Lower the bar to your chest over a span of 2 seconds.
    • Begin lifting the bar without a noticeable pause at the bottom.
    • Lift the bar over a 1 second span.
    • Begin lowering the bar again without a noticeable pause at the top.

    Recognize that some exercises start by lowering a weight (squats, leg press, bench press, etc) and some start by raising it (biceps curls, leg curls, shoulder press, etc). The first number always corresponds to the concentric contraction in any movement, regardless of which phase typically starts that exercise.

    How fast (or slow, depending on your perspective) should you lift?

    With respect to concentric repetitions, the best advice is to lift explosively. Provided that you maintain control throughout the lift, try to move the weight as quickly as possible. This generally results in speeds of one to two seconds to complete the concentric action. (You will necessarily perform the last few reps of a set more slowly than the first few reps as a result of increased muscle fatigue, but the intent is always to lift in explosive fashion.)

    A somewhat slower tempo is beneficial on the eccentric portion of a repetition. As a general rule, this phase should take about two to three seconds. Understand that eccentric exercise is perhaps even more important to the growth response than concentric contractions. Here’s why. Eccentric actions involve lengthening a muscle under tension, which results in a preferential recruitment of fast-twitch fibers. Because fewer fibers are called on to produce force during eccentric movement, those that are active are forced to bear a greater amount of tension. As a result, microtrauma is increased, leading to greater remodeling of muscle tissue.

    The take-away message is to resist gravity when lowering the weight. If you don’t, you’re missing out on more than half of the muscle-building benefits of the exercise!

    The isometric portion of the lift is less of a concern from a muscle development standpoint. Some fitness pros recommend holding the top phase of the lift for a second or so to generate a peak muscular contraction. Research to support such a practice, however, is lacking. Your best bet is to maintain constant tension on the target muscle by not locking out the joint at the top of the lift. Provided that you perform each rep in a smooth, controlled fashion, eliciting a peak isometric contraction is superfluous.

    Closing thoughts about repetition speed (training tempo)

    The weight lifting tempo is the rate at which you move during both the concentric and eccentric phases of the repetition. It’s the speed of the movement.

    Generally, it is important to control the weight. A slow, controlled lift is usually the safest and most effective way to perform an exercise. A general rule would be to lower the weight (eccentric movement) at a pace of about 2 to 3 seconds and to lift or push the weight at a pace of about 1 to 2 seconds. To make it short: lift explosively (or faster), lower more slowly than lifting.

    The soreness you often feel from resistance training is usually the result of the negative, or eccentric, portion of the lift. While there are some lifting techniques that are ballistic in nature (for instance, power cleans) and require a very fast tempo, generally speaking, a controlled lift with good technique is best.

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    krunoslav
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    Hey! My name is Kruno, and I'm the owner and author of Bodybuilding Wizard. I started this website back in late 2014, and it has been my pet project ever since. My goal is to help you learn proper weight training and nutrition principles so that you can get strong and build the physique of your dreams!

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