Monday, 18 Jun 2018

The Positives of Negatives. Eccentric Training

The Positives of Negatives

Mixing eccentric training into your workout can create big payoffs in strength, definition, and even metabolism 

BY DIANE HART

WORKOUT 1

FULL-BODY, 2-UP/1-D0WN

HOW TO: Use 50% of your 1RM for each exercise in concentric phase. Take one second to reach extension.

Using one arm or leg for the eccentric phase, descend slowly, 3 to 4 seconds to complete. Repeat on opposite side. Do up to 4 sets/10 reps of each exercise; rest 60 to 120 seconds between sets.

  • CHEST PRESS MACHINE
  • SEATED ROW MACHINE
  • OVERHEAD PRESS MACHINE
  • BICEPS CURL MACHINE
  • TRICEPS PRESS MACHINE
  • LEG PRESS
  • LYING LEG CURL

WORKOUT 2

BICEPS FOCUS

HOW TO: Do 2-up/1-down negatives (see “How to Go Negative,” right) for your first exercise, then follow a regular lifting pattern for the other moves. As you gain strength, change the order in which you position the eccentric exercise.

  • ECCENTRIC MACHINE BICEPS CURL (3×10 per arm) Contract muscle throughout eccentric phase; rest 1-2 min. after a complete set.
  • ALTERNATING DUMBBELL CURL (3×10 per arm) Squeeze at the top; rest 1 min. after a complete set.
  • CABLE CURL (3×10) Squeeze at the top; rest 1 min. after a complete set.

WORKOUT 3

The Positives of Negatives workout 3

THIGH FOCUS

HOWTO: Do 2-up /1-down negatives (see box, right) for the first exercise, then follow a regular lifting pattern for the other moves.

As you gain strength, change the order in which you position the eccentric exercise.

  • ECCENTRIC MACHINE LEG PRESS (3×10 per side). Contract muscle throughout eccentric phase; rest 1 to 2 min. after complete set
  • PLIE SQUAT (4×8-10). Squeeze at the top; rest 1 min. after set.
  • LUNGE (3×10) One set equals 10 steps each forward and return.

MOST OF US tend to focus on the lifting (concentric) portion of an exercise—the up phase of a biceps curl, the pulldown of a lat move. But slowing down the eccentric, or negative, portion of a movement can yield even bigger benefits. Eccentric exercises place muscles under tension for a longer time, which creates greater gains in strength and hypertrophy, notes Len Kravitz, Ph.D., an exercise scientist at the University of New Mexico and co-author of The Essentials of Eccentric Training. You’ll even get a bigger metabolic afterburn by adding eccentric exercises into your training compared with traditional resistance training methods, says Kravitz—which means you’ll burn more calories after the workout is done. That’s because eccentric training creates more muscle microtrauma, which in turn needs additional oxygen to repair. Not only does eccentric training add to overall strength improvements, it’s also been shown to boost power in the lifting phase. In one study from the Journal of Strength and Conditioning Research male participants boosted their strength in the concentric portion of a bench press by five to 15 pounds after incorporating negatives into their routines. The reason? Neural pathways are additionally stimulated during the eccentric training, leading to a greater muscle response. This, in turn, improves contraction force, allowing the subjects to lift more weight, according to study authors. And the benefits can even last beyond the gym: Studies show that eccentric training may lower systolic blood pressure and reduce your risk of cardiovascular disease while lowering levels of blood glucose and insulin that could help you manage type-2 diabetes, says Kravitz.

Keep in mind that you’re actually stronger in the negative phase of a repetition than the positive one due to the activation of an additional protein that is not stimulated during the concentric phase, according to the latest research in the Journal of Applied Physiology. As such, negative training allows you to more fully stress the targeted muscle. But that also means you’ll typically feel more sore the day after the workout, since there’s a greater amount of microdamage and momentary muscular fatigue, so plan to allow more recovery time between workouts (at least two to three days, says Kravitz). No matter what your level of fitness, it’s important to progress gradually when training with negatives to avoid injury. Start out with 40-50% of your one-rep max, advises Kravitz, then add load gradually as your muscles, ligaments, and tendons adapt to the new training stresses. To max out the benefits of negatives, focus on contracting your muscle during the eccentric phase. “My philosophy is you are training your muscles, not just lifting weights,” says Kravitz.

HOW TO GO NEGATIVE

There are a few ways to incorporate negatives into your routine. The most conventional approach using free weights calls for 1 count up (concentric) and 3 to 4 counts to lower (eccentric phase), a technique you can use in any workout. A training partner or spotter can help you raise the weight as you begin to fatigue. For a greater challenge, you can incorporate the “two-limbs-up/ one-limb-down” strategy: Lift the weight through the concentric phase using both arms or legs in one count, then lower the weight, slowly, using just one arm (or leg) for 3 to 4 counts. Repeat the concentric lift with both arms (or legs), but then lower the weight with the opposite arm or leg. This completes one full repetition of the exercise. Continue alternating in this fashion until you complete all required reps or reach momentary muscular failure. “Use this ‘2-up/1- down’ eccentric training for any exercise that uses some type of fixed weight machine,” says Kravitz.

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