02/26/2019
Training the Calf Muscle Complex
Part V: With Heavy Slow Resistance
In this series, we’ve touched on a number of simple tools and postures with which to challenge the calf complex. Heavy Slow Resistance (HSR) is another important one.
Training plans often fail to challenge the calf complex with adequate load, erring on the side of not using enough resistance to achieve the desired effects. Training with HSR can be progressed relative to resistance, reps, sets, rest times and so forth—but, the tempo of contractions is typically slow, as the name implies.
Plus, there are valuable effects to be had with HSR in regard to treating Achilles tendinopathy.
Research by Beyer et al published in 2015 found that HSR was as effective in treating mid-portion Achilles tendinopathy as the long-trusted Alfredson Protocol of eccentric loading—in just a fraction of the time required daily and weekly! And, HSR was often reported to be more tolerable—less discomfort than with eccentric-focused loading. It’s also worth noting that in this study by Beyer et al, the exercises were only performed bilaterally.
In our video, we demonstrate loading first with bodyweight for technique, then adding dumb bells, the barbell, bilateral loading, and yes—single leg focus too. We aimed for slow 3-4 second concentric, isometric, and eccentric phases.
Additionally, HSR can be performed seated with a soleus focus, using a leg press machine with straight-knee positioning, or—in standing, a small step or plate may be used under the forefoot to take the ankle through more dorsiflexion. Box height may also be varied as desired. Credit to Christopher Johnson, PT for teaching the use of a box and single leg focus with these—great drills for runners!
This type of work is very helpful in rehab settings but is also very helpful in enhancing force production and resilience for performance.
A number of cues and techniques are important for safe and effective lifts. As always, feel free to hit us up with any questions!
1. Alfredson, et al. (May-June 1998). Heavy-load Eccentric Calf Muscle Training for the Treatment of Chronic Achilles Tendinosis. American Journal of Sports Medicine. Retrieved from: https://www.ncbi.nlm.nih.gov/pubmed/9617396
2. Beyer, R. et al. (May 2015). Heavy Slow Resistance Versus Eccentric Training as Treatment for Achilles Tendinopathy: A Randomized Controlled Trial. The American Journal of Sports Medicine.
Retrieved from: https://www.ncbi.nlm.nih.gov/pubmed/26018970
3. Habets, B. and Cingel, RE. (Feb 2015). Eccentric Exercise Training in Chronic Mid-Portion Achilles Tendinopathy: A Systematic Review on Different Protocols. Scand J of Med Sci Sports. Retrieved from: https://www.ncbi.nlm.nih.gov/pubmed/24650048