Learn the rear uppercut: legs, hip and shoulder in one chain, short range, elbow in front of the body. With the evidence on speed and training effects.
The rear uppercut is an upward hook of the rear hand that travels from below to the opponent's chin. It arises from a chain: the Swiss material describes that fist and torso drop slightly, the forearm goes vertically upward, and legs, hip and torso extend at the same time; the fist hits the chin from below [2]. The world federation's handbook calls it a punch of short and medium distance, in which the gloves almost touch [1].
How hard is it really? The Swiss material calls the uppercut "structurally the most difficult punch" [2]. The rear uppercut is the variant with the longest path, because the power has to travel from the rear leg through hip and shoulder into the fist. Realistically you need several weeks until you throw it without winding up and with guard (rule of thumb).
What do measurements say? In 20 boxers and 20 sanda athletes, maximal shoulder angular velocity was the decisive factor for the uppercut's peak speed [3]. At the same time another study showed that elite boxers produced more force and more speed on cross, hook and uppercut than younger, well-trained boxers, whereas the juniors relied more on the shoulder [4]. My conclusion (not a study result): the speed comes from the shoulder at the end, the power from the chain below.
From the boxing stance lower slightly, then extend from the rear leg, without a punch. The hands stay at the head. The handbook gives: bend the knees slightly, rotate the torso slightly to the rear side, shift weight first onto the rear leg and onto the lead leg during the extension [1]. Milestone: ten repetitions, you feel the pressure from the rear leg and stay balanced.
The Swiss material names hip rotation as the trigger [2]. From the loaded position you rotate torso and hip towards the lead side so the impulse runs from the floor to the shoulder (practice; the handbook describes loading to the rear side and the weight shift onto the lead leg [1]). The arm stays loose. Milestone: ten repetitions, hip and shoulder turn together, the arm hangs loose.
Now the arm joins in: let fist and torso drop slightly, then bring the forearm vertically upward and extend legs, hip and torso. The fist hits the chin from below [2]. The elbows stay in front of the body, the punch travels in a spiral [2][1]. The opposite hand stays at the head and rigid to protect head and body [1]. Milestone: ten punches into the air, the elbow stays in front of the body, the lead hand at the head.
Your partner holds the pad palm down at chin height, close in front of you. You punch up into it, return the same way and stand in the stance [1]. The handbook teaches standing first, then with steps [1]. Milestone: ten punches, all hit the pad from below, you stand balanced afterwards.
The handbook names short series of hooks and uppercuts at short range [1]. Build the rear uppercut in after a lead hook. In the 2023 women's world championship finals, winners used more rear-hand hooks and uppercuts than losers [6]. That is a hint, not a guarantee. Milestone: lead hook, rear uppercut, return to the stance as one clean sequence.
In the rear uppercut you go into a crouch and rise, and your guard changes briefly. If you lean forward doing it, you put your head in reach of the opponent's hooks (practice). So throw the punch only at close range, where the gloves almost touch [1].
On the head: a meta-analysis of 35 studies found a clearly higher concussion risk in boxing than in other combat sports (risk ratio 0.253 versus 0.065) [7]. The uppercut hits the chin, and that is a lever that throws the head back (practice). Practise it first on pads and standing bag. Sparring only under supervision, with a suitable partner, headguard and 16-ounce gloves [1]. Warning signs like nausea, confusion or dizziness after a hit require stopping at once and medical help [1].
This guide explains and motivates; it does not replace supervised training.
Train angular velocity deliberately, not just the punch. In an eight-week study with 24 amateur boxers (three sessions per week), a programme for joint-specific velocity and coordination raised maximal angular velocity in shoulder, elbow, pelvis, hip, knee and ankle during the right uppercut; the control group did not change [5]. What exactly the programme contained is in the full text, not the abstract. One practical derivation: explosive exercises such as rotational medicine-ball throws (practice, not from the study).
The lead uppercut comes from the lead hand, the rear uppercut from the rear hand. The rear-hand punch has the longer path: the power goes from the rear leg through hip and shoulder [2]. The handbook teaches the lead-hand uppercut first [1].
At short and medium distance [1]. According to the handbook, the gloves almost touch at short distance. At long range you need a straight punch. The uppercut is thrown short, with the elbow in front of the body [2].
The Swiss material calls it structurally the most difficult punch: it needs hip rotation, dropping and extension of legs, hip and torso in sequence [2]. The path is spiral, not straight, and the point of impact is under the chin.
The sources read contain no number for amateurs in training. Elite boxers produced more force and speed on uppercuts than well-trained juniors [4]. For you: technique and balance before hardness, especially in partner work.
The movement, yes: shadowboxing in front of the mirror, standing bag or uppercut pads. Timing against a moving opponent, no. The handbook teaches standing first, then with steps [1]; partner work comes after.
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