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I've been told that squats would be a good way of building up muscles in my knees as they aren't great at the moment. I have been doing squats and either use no weights at all or I do them while holding a 5Kg medicine ball. Is this safe to do or is it not recommended?

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I don't recommend doing squats on the medicine ball like this.... – J. Won. Feb 25 '12 at 7:13
up vote 9 down vote accepted

If you are holding the medicine ball in front of you, what you are doing is a form of goblet squat. A goblet squat is very good for your body, and provides a good core component to the squat as well.

The important components of any squat are:

  • Make sure the crease of your hip goes below the patella (knee cap). This is going below parallel.
  • Make sure that your core (back, abs, upper back) is tight.

The purpose of going below parallel is to strengthen the posterior chain. It gets your hamstrings and calf muscles involved, preventing strength imbalances between the front and back of your legs. This of course, is what strengthens the knee.

Don't be afraid of increasing the weight you do beyond 5kg. You can use kettlebells or dumbbells to get heavier weights on the goblet squat. Eventually, you can graduate to back squats or front squats for even stronger knees and core. Just make sure your increases are around 5-10lbs (2.5-5kg).

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See I thought if I went below the kneecap it would cause damage to the knee and not be good for me. I can see your point and will try this tonight :) – mickburkejnr Feb 24 '12 at 10:07
See this for more info: – Berin Loritsch Feb 24 '12 at 12:45

If you are doing goblet squats with a medicine ball (you can also use a dumbbell or kettlebell) then I would highly recommend using goblet squats to help you perfect your squat technique.

Here is a great resource on goblet squats:

In a nutshell, it's much harder to have bad form doing a goblet squat than a "regular" squat because the positioning of the medicine ball/kettlebell/dumbbell forces you to brace your core, keep upright, hinge from the hips, etc.

The reason why this is important is that it's not uncommon to see people in the gym attempting "regular" barbell squats but with outrageously bad form. Some of the most common ways that people butcher squats include the following:

  • Not going down low enough (not going to parallel or breaking parallel)
  • Bending forward too far at the waist
  • Letting the knees splay out too far (knees should not go past toes)
  • Not keeping head up, shoulders back, chest proud
  • Not "unlocking" the hips for a hip dominant hinge movement

A lot of these common errors mentioned above can be remedied by practicing proper squat form with goblet medicine ball squats.

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Hi @JoelOhman, welcome to the site! Can you edit your answers and provide some more information in addition to the links you provided? That would give them more context and make them a better answer. Please see the faq for more information regarding how this site works. Also take note that self-promotion is frowned upon and perceived as spam which is also stated in the faq. – Matt Chan Feb 24 '12 at 19:31

Also, make sure you keep you weight on your heels during the entire squat movement, and you initiate both the up & down movements with your hips first, not your knees.

A fun variant is to extend your arms forward at the bottom of the squat, holding the medball or weight away from you at shoulder height with straight arms. Then you can bring it back in to your chest when you stand or keep it away from you as you stand. This is a great way to add more challenge without needing a lot of extra weight for lifting.

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Thank you for the advice :) – mickburkejnr Feb 24 '12 at 10:07

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