Loterij winnende nummers

  1. Veilig Casino Nederland Nl Casino 2023: Als u op zoek bent naar een snelle manier om spice up uw routine en win wat geld op hetzelfde moment, we hebben het perfecte spel voor u.
  2. Spel Betrouwbaar Blackjack Site 2023 - Groot volume of trouwe spelers kunnen recht hebben op hun kosten worden teruggegeven, hetzij in de vorm van contant geld, bonus, gratis spelen, of een combinatie van alle drie.
  3. Wat Zijn De Nummers Bij Roulette: Apollo God van de zon (Green Tube) van Green Tube werd gepresenteerd aan de gokwereld op 27 Jul 2023.

Betrouwbaar Eindhoven online casino

Kan Je Altijd Winnen Bij Mobiele Gokautomaten In 2023
Veiligheid en beveiliging zijn de belangrijkste zorgen bij online gokken.
Digitale Gokautomaten Kaarten Winnen
Naar onze mening, kunt u proberen dit casino.
Het bedrijf gaat vaak gepaard met Net Entertainment, PlayNGo en Yggdrasil.

Holland casino speelautomaten gratis

Hoeveel Winst Kun Je Maken Met Roulette Voor Geld
Black Ice is een nieuw videoslot dat ontwikkeld is door een casinogame provider die niet bij iedereen bekend is..
Nederland Elektronisch Casino 2023
Ze vertegenwoordigen snelle en veilige manieren om weddenschappen te plaatsen vanaf uw mobiele gemakkelijk.
Downloaden Naar Virtuele Gokmachine 2023

Maximising Hamstring Exercises

It was during a second-year-university anatomy class when I was first introduced to a little anatomical tidbit that can contribute to reducing the chronic hamstring tightness plaguing many individuals. The lecturer mentioned – in passing – that we should avoid ankle dorsiflexion during hamstring stretch in order to properly target them.  Dorsiflexion of the ankle? What’s that have to do with the hamstrings?  

Hamstring Stretch and strengthening


Anatomy


Gastrocnemius

The Gastrocnemius muscle is a superficial bipennate muscle that spans from distal femur to form part of the calcaneal tendon (achilles tendon). Its main functions are plantarflexion of the foot (pointing toes away from the knee) and also has some knee flexion capabilities.

Hamstring (Biceps femoris, Semitendinosus and Semimembranosus)

The Hamstring muscle group primarily originate at the ischial tuberosity in the pelvis (with the exception of short head of biceps femoris which originates from the linea aspera on the femur). Biceps femoris attaches to the head of the fibula while semitendinosus and semimembranosus attach to the tibia.
With the exception of short head of biceps femoris, the hamstring muscles are responsible for both hip extension and knee flexion. They also combine to generate some lateral and medial rotation of the thigh.

Getting to the point

The traditional hamstring stretch we were all introduced to as tweens was to stretch your hamstring by grabbing your toe. Undoubtedly that will promote us to dorsiflex our toe to make it easier to reach (so we can show off our flexibility). However, dorsiflexing the toe with your knee straight also causes the gastrocnemius to be stretched. The issue that arises is that as we perform the “toe-grab hamstring stretch”, we feel a stretch in the back of the knee, we hold this “hamstring” stretch and switch sides and go about our business. The evident issue as a result of the dorsiflexion of the toe, we mistake the stretch felt for a hamstring stretch rather than what it primarily is – a gastrocnemius (calf) stretch.

Hamstring Stretch and strengthening

Hamstring Stretch: Try it out

Sit on the floor with your knee straight and toe dorsiflexed (pointing back towards your body) and lean forward until you feel a stretch behind your knee.
Next, maintaining the stretch, relax your foot and plantar flex it (pointing your toe away from the knee).
Lean forward and feel the difference in the stretch.
That’s how a hamstring stretch should feel.


Gastrocnemius Physiology

The Gastrocnemius muscle has a relatively short belly with a long taught tendon. The muscle can be stretched with only a few degrees of dorsiflexion. The issue with a dorsiflexed foot during a hamstring stretch is that the gastrocnemius is maximally stretched well before the hamstring muscles reach a stretched state. So we stretch the gastrocnemius maximally while the hamstring remains at a neutral length. Therefore there is no net stretch on the hamstring. Since the aim stretching usually to increase flexibility, the negation of the hamstring stretch can result in perpetually tightening hamstring which is associated with reduced range of motion, strength and lower back pain.


Impact on Hamstring Strengthening

Although hamstring curls are not the most efficient way to strengthen the hamstrings (we’ll save that discussion for another day), the information can be readily applied to hamstring strengthening as well. If you have performed or witnessed a prone hamstring curl on a cable machine at the gym, you will notice that most people have their toes severely dorsiflexed as they curl their hamstring. This indicates that they are recruiting gastrocnemius for a large part of the movement. In essence, it becomes more of a calf exercise than a hamstring exercise. This makes sense when you take into consideration the amount of pain and fatigue associated with a dorsiflexed hamstring curl, as the gastrocnemius has a lower endurance than the hamstring.
A workaround is to simply ensure your foot is neutral or plantar flexed when performing any exercise targeting the hamstring through knee flexion.

Hamstring Stretch and strengthening

GOOD – Foot in pantarflexion


Hamstring Stretch and Strengthening

BAD – Foot in Dorsiflexion


Conclusion

We have seen how an understanding of gastrocnemius/hamstring anatomy and physiology can affect how we go about stretching and strengthening the hamstring muscles. Being aware of the position of your feet can go a long way to ensuring better hamstring health and maximising the time we dedicate to the posterior compartment of our lower limb.

No Comments

Leave a Reply