Powerlifting squat needs analysis.

INTRO

Powerlifting is one of the increasingly popular strength sports that welcomes enthusiasts of all ages and genders, showcasing three primary lifts: the squat, bench press, and deadlift. (Ferrari et al., 2025) Each powerlifting competition starts with the squat, a foundational movement. Participants are categorised by gender, age, and body weight, ensuring a fair and level playing field. While various federations may have their own regulations, one of the largest and best-known federations is the International Powerlifting Federation (IPF), where each lift is judged by three referees, ensuring it meets the stringent standards established by an international organisation. The ultimate goal in powerlifting is to lift the heaviest weight within specific rules; this determines the champion in each bodyweight category. (Powerlifting. sport, 2025) Furthermore, overall champions are crowned through a sophisticated scoring system that utilises Good Lift (GL) points, taking into account the lifters’ age and body weight, adding an extra layer of strategic depth to the competition. This analysis delves into the essential physiological requirements and biomechanical demands for athletes and explores the common injury patterns that can arise in this sport. By understanding these factors, lifters can better navigate the challenges of powerlifting while optimising performance and minimising injury risk.

PHYSIOLOGICAL ANALYSIS

In the competition, lifters are divided into flights, with each flight consisting of at least 6 and a maximum of 14 lifters. Each lifter has 60 seconds on the platform to prepare for their lifts. (Powerlifting. sport, 2025) Therefore, it can be approximated that there will be at least 6 to 14 minutes of rest between lifts. In larger international events, the International Powerlifting Federation (IPF) is trying to standardise the rest periods by creating equal groups of 8 within each flight. (Openpowerlifting, 2025) As a result, the primary energy system utilised during these lifts is the ATP-PC system, which is engaged for short bursts of high-intensity activity. Training this short yet great force-producing energy system is essential.

The strength requirements primarily target the lower limbs: quadriceps, hamstrings, and glutes, but the role of the trunk and upper back is equally crucial. Currently, the heaviest drug-tested raw squat performed by a female athlete is 318.5 kg, achieved by a lifter weighing 138.9 kg, which is 229% of her body weight. On the men's side, the record is 490 kg, accomplished by a lifter weighing 190.4 kg, which is 258% of his body weight. (Openpowerlifting, 2025) It could be assumed that larger muscle size can create higher force, but as many research studies suggest, it is not that straightforward. Simply put, hypertrophy training does not always yield a higher force production rate (Reggiani & Schiaffino, 2020). Through training, lifters should aim to increase muscle recruitment through a well-designed program. Some research supports the idea that an untrained person can contract 60-70% of their muscles' full strength potential, but with a good program, this can increase to 80-90%. This is achieved by converting hybrid fibres to

fast-twitch, IIa or IIx muscle fibres, as well as creating neurological adaptations such as improved coordination and recruitment of muscle fibres at a higher firing rate. (Hales, 2010)

Anthropometric variables can play a significant role in success. (Hackett et al., 2020; (Vigotsky, 2018) For example, a long femur length combined with above-average dorsiflexion can create serious disadvantages for the lifter. While femur length cannot be changed, the range of motion (ROM) can be improved. More details will be provided in the biomechanics section, but it is crucial to maintain satisfactory ROM, particularly in the ankle, hip, and shoulders, to effectively perform the movements.

Powerlifting is structured within weight classes, making it crucial for athletes to optimise their body composition. Competitive lifters benefit from a higher ratio of lean muscle mass to body fat, as increased muscle density not only enhances strength (Wang et al., 2020) but also improves the lifter's overall ranking. (Hackett et al., 2020) For overall rankings, a coefficient system used known as the IPF GL (Good Lift) formula. (Powerlifting, sport, 2025) It accounts for the lifter's total weight lifted and body weight, making the playing field more even for the overall scores.

BIOMECHANICAL ANALYSIS

A squat is a complex, multi-joint compound movement performed in a closed kinetic chain that engages multiple muscle groups simultaneously. When analysing the squat from a side view, the movement primarily occurs in the sagittal plane, involving flexion and extension. Specifically, this includes dorsiflexion in the ankles, knee flexion, and hip flexion in the lower body. (Kim et al., 2015) The hip joint is a ball-and-socket joint, allowing for a wide range of motion during the squat. This flexibility enables important movements, such as internal and external rotation in the transverse plane, as well as abduction and adduction in the frontal plane. Furthermore, as a lifter descends into the squat, shoulder external rotation occurs higher up in the torso.

To perform some calculations, coaches will need data from the lift, such as mass, distance, time, and acceleration. The example below illustrates calculations based on data from Giustino et al.,(2024) study. For the power calculations, I simplified the scenario by assuming the lifter moves at a steady speed in a straight line without any deviations. However, this is not always the case. When a lifter initiates the squat from a sagittal view, the centre of mass (COM) is typically located in the middle of the foot. Throughout the movement, this centre of pressure can shift slightly towards the heel or the toes. (Schoenfeld, 2010) Coaches can also calculate the torque acting on the knee and hip at the bottom of the squat by multiplying the moment arm length (the distance from the COP line to the joint) by the force produced, assuming the moment arm is perfectly perpendicular to the floor.

Force and Power calculation

During the squat, the main muscles engaged are the quadriceps group ( vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris). These muscles are responsible for knee extension and concentrically resisting knee flexion. The antagonist muscle group is the hamstring group ( biceps femoris, semitendinosus, and semimembranosus.) Together, these muscle groups play a vital role in knee movement, stability and help reduce tibiofemoral shear throughout the movement. (Schoenfeld, 2010) As for hip extension, the primary muscle used during the squat is the gluteus maximus and the hamstring group. The glute maximus is one of the largest in the body and is the most superficial of the gluteal muscle group. To stabilise the torso and maintain an upright position, the lifter relies on the isotonic contraction of the lower back muscles, particularly the lumbar erector spinae (e.g., iliocostalis and longissimus). The muscles of the lower leg and ankle also perform an important stabilising role. The gastrocnemius, especially the medial head, along with the tibialis anterior and tibialis posterior, helps control knee valgus and foot pronation. (Schoenfeld, 2010)

A satisfactory range of motion in both the hips and ankles is undoubtedly necessary for performing movements that allow for deep squat positions. A study from Schoenfiled (2010) highlighted some differences between male and female bodies. For males, the greatest limiting factor for achieving a deep squat seems to be ankle dorsiflexion and knee flexion, hip flexion (e.g., sitting at the bottom of the squat). For females, dorsiflexion strength and the ability to dorsiflex with an extended knee had the most significant impact on squat depth. (Schoenfeld, 2010) Ankle mobility and stability play a crucial role in closed kinetic chain exercises (where the feet are on the ground), but hip flexion is equally important. The femoral head should be able to glide posteriorly; however, if the lifter has tight or shortened muscles, hip flexion and internal rotation will be limited. Consequently, they may compensate with trunk flexion to achieve the desired depth, which can increase the risk of undesirable lower back pathologies.(Schoenfeld, 2010; Kim et al., 2015)

When analysing different lifting styles, an important distinction can be made between weightlifters and powerlifters. Weightlifters typically use a high-bar squat technique, where the barbell is placed on the top of the upper trapezius. This positioning promotes an upright torso and enhances the activation of the quadriceps. (Giustino et al., 2024) In contrast, powerlifters generally prefer a low-bar squat position, with the bar resting on the mid-trapezius and rear deltoids. This lower bar position effectively shortens the lifter's lever arm (the torso), allowing them to lift heavier weights more efficiently. (Straub & Powers, 2024)

Low Bar versus High Bar Squat

INJURY ANALYSIS

Powerlifting is a non-contact sport, which means it poses a lower risk to participants compared to contact sports like rugby, football, or any combat sports. Systematic reviews from Strömbäck et al., (2018) and  Tung et al., ( 2024b)  found that the incidence of injuries in powerlifting ranges from 1.0 to 4.4 injuries per 1,000 hours of training. This rate is significantly lower than that of rugby union, which has an injury rate of 87 injuries per 1,000 hours of training. (West, 2020) Furthermore, powerlifting is still considered a low-injury-risk sport when compared to other strength sports, such as strongman, which has an injury rate of 5.5 to 7.5 injuries per 1,000 hours of training. (Keogh & Winwood, 2016b)

However, like any sport, powerlifting is not without its risks and potential injuries. According to Tung et al., (2024b), the most common anatomical sites for injuries are the lower back (30.8%), shoulder (19.6%), and elbow/upper arm (8.0%). It is essential to note that this data was collected from athletes competing in full-power competitions, and these injuries may be closely associated with the bench press and deadlift. Lower back pain is the most prevalent issue within the sport. The lumbopelvic, which includes the lumbar spine and pelvis, often refers pain to the lower back and is typically subjected to significant training volume from both squats and deadlifts. Therefore, it is challenging to attribute lower back pain injuries solely to squatting or deadlifting, as these two lifts are intricately linked.

Powerlifting occurs in a controlled environment where athletes do not need to make sudden directional changes and are not in contact with competitors. As a result, it is quite possible for lifters to compete with either acute or chronic injuries. Pain does not seem to deter lifters from participating in competitions; rather, it often leads to adjustments in training, such as reducing intensity or workload, or altering their technique. (Strömbäck et al., 2018) With proper planning and attention to a lifter's previous injuries, the likelihood of injury can be reduced. Interestingly, according to Strömbäck et al., (2018)  23% of participants attributed their injuries to excessive training volume, while only 5% indicated that poor lifting technique was to blame.

Unfortunately, many of the studies fail to classify whether athletes belong to a tested federation, like British Powerlifting, or an untested one, like the British Powerlifting Union. Even if this question is included in questionnaires, it is crucial to remember that athletes may fear severe repercussions, such as lengthy bans, for admitting to using banned substances. The use of steroids can significantly influence the type, aetiology, and severity of injuries. A systematic review from Keogh & Winwood, (2016b) highlighted serious muscular or tendon ruptures and bone fractures. However, it can be speculated that these injuries are more likely to occur in federations that permit the use of banned substances.

Keogh & Winwood (2016b) injury reports

Another notable injury associated with powerlifting, as well as other strength sports, is pelvic floor dysfunction among female athletes. In a Tung et al., (2024b) study, 50% of the female  lifters reported stress incontinence. The female pelvic floor is not designed to withstand the intense abdominal pressure generated by heavy squats and deadlifts. Lifters employ a breathing technique known as the Valsalva manoeuvre, which further increases intra-abdominal pressure. Jundt et al. (2015 ) suggest that proper breathing techniques and pelvic floor exercises can help reduce the risk of pelvic floor dysfunction and urinary incontinence.

TESTING BATTERY

As discussed in the previous section, lifters need sufficient mobility to achieve a sufficient squat. Adequate ankle mobility requires dorsiflexion, which allows the tibia to transfer anteriorly. A knee-to-wall test involves placing the subject in a lunge position and measuring the distance from the wall to their toes as they push their knee toward the wall. Konor et al., (2012) indicate that the average score for this test is 9.5 cm ± 3.1 cm . Another crucial aspect is hip flexion. The lifter should be able to reach a deep squat position without compensating by posteriorly tilting their hips. The instructor can ask our lifter to stand against the wall and lift their knee up They should be able to lift their leg easily and achieve a good range. The average range for true hip flexion falls between 80 to 140 degrees, according to Elson & Aspinall, (2008). If the athlete compensates by tilting their lumbar spine or if their femur begins to externally rotate to gain more range, it can indicate limitations in mobility and highlight some existing compensation patterns for us.

To create a more functional test, coaches must observe our athletes' movements visually. Flawed movements may feel strong but can significantly increase injury risk. Key concerns include knee valgus (Sjöberg et al., 2018). This can lead to asymmetrical foot positioning or hip rotation, as well as femoroacetabular impingement. Coaches should also assess the shoulders and look for any asymmetry in shoulder external rotation. It's also crucial to keep the spine in a neutral position during loading to prevent injuries like a herniated disc. Many issues can be addressed with proper cueing or a training plan to correct muscular imbalances. (Myer et al., 2014)

There are a few different ways to test athletes' strength and analyse their movement. A trained observer can often spot major faults in movement (Papadakis et al., 2024; Straub & Powers, 2024), but advanced technology like 3D motion analysis systems and performance testing tools provides more accurate insights. (Maclachlan et al., 2015) When analysing a lifter performing a squat, the bar path needs to remain close to the line of COM, so recording from a side view can be useful. Force plate testing can provide valuable data on how force is generated during squats, including peak force and leg strength symmetry.

Using an RPE (rate of perceived exertion) scale can be a subjective assessment method, and athletes cannot rely solely on how they feel, as various factors can influence this. Additionally, using a bar speed tracker can objectively measure performance without pushing athletes to failure. According to Myer et al., (2014), it takes an average of 4.6 +/- 1.2 seconds to complete a 1-rep max. As athletes approach failure, their bar speed may drop significantly (Włodarczyk et al., 2021). Testing and tracking bar speed can effectively indicate improvement over time, helping coaches and athletes gauge progress.

Unfortunately, powerlifting is a less complex sport and requires a smaller range of specific skills than other sports, such as football and rugby; therefore, the testing battery is limited, and it is also difficult to draw a line between strength and conditioning coaching and technical coaching.

The table below provides a quick summary of a low-cost test battery.

Test	Expected result	Why
Mobility test, ankle	Good range of dorsiflexion	To see possible restriction, and to track progress
Mobility test, hip	Good range of hip flexion	To see possible restrictions and to track progress
Heavy squat (5 reps at 80% of 1 RM, challenging but not close to failure)	No major deviation (asymmetry, rounding in the back, knee valgus…etc)	This can be used to screen for compensation patterns, lack of mobility or strength inadequacy.
1 RM squat	See current 1 RM	To be able to track progress.

CONCLUSION

In conclusion, powerlifting, particularly the squat, is a relatively safe sport when performed with proper technique and with an adequate range of motion. Achieving success in this discipline requires more than just brute strength; it necessitates dedicated training and a commitment to improving one's skills.(Straub & Powers, 2024)

Different body types can have anthropometric advantages that may facilitate squatting more efficiently. (Vigotsky, 2018; Hackett et al., 2020) Individuals of varying body types can discover squatting techniques that suit their biomechanics. This adaptability is crucial, as it allows every lifter to find the most effective way to execute the squat based on their physical attributes. It’s also essential to recognise the importance of lean body mass in this sport.

While certain variables and levers, such as femur length, cannot be altered, dedicated training can positively influence other aspects of performance. By focusing on increasing lean muscle mass and facilitating neurological adaptations — including improved firing rates of muscle fibres — lifters can significantly boost their squatting capacity.(Hales, 2010) Moreover, it is possible to shift muscle fibre types through targeted training regimens, temporarily. This ability to adapt and refine one’s approach underscores the importance of individualised training programs in powerlifting. Ultimately, when approached with attention and care, powerlifting can be a rewarding pursuit that fosters physical and mental strength and resilience. (Lepage, 2018)

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