Rowing is a great form of exercise and is highly popular, whether it is recreational, club level or international. However, due to the cyclic and repetitive nature of the sport, most rowers you speak to will also have had some lower back pain at some point or another!
Research in rowing agrees with this and notes a large number of overuse injuries. Lumbar spine (lower back) injuries account for 31.8% of the injuries that are reported, followed by injuries to the knee (15.9%) and injuries to cervical spine (neck) (11.4%) (Finlay et al., 2020).
Why rowers get lower back pain?
The magnitude of the forces acting on the lumbar spine during a stroke cycle is very high as you are in a flexed posture for 70% of the cycle. The combination of flexion with compressive loading has been identified as a mechanism for lower back injury
Reid & McNair (2000) have also identified the following as contributing factors as well:
- Time of the day for training: Most of us as rowers like to train early in the morning to have calm water and to fit in with other commitments (work, school, etc.). However, flexion stresses can be three times greater than normal in the lumbar spine in the mornings compared to later in the day. This makes the lumbar region more vulnerable to injury in the mornings.
- Repetitive loading: A normal training session of 60-90 minutes may amount to about 1800 cycles of flexion per training session!
- Reduction of reflex activation of muscle: The repetitive motion desensitises the mechanoreceptors in the spinal ligaments resulting in instability in the lumbar segments, therefore for several hours after the activity, the lumbar spine may be more vulnerable to injuries involving bending.
- Muscle fatigue: As the back extensors fatigue during training session, not only does the amount of lumbar flexion increase, the proprioception in the lumbar muscles is also reduced. This means you may go into a greater flexed posture without being aware of it.
- Tight hamstrings: This may cause an increase in anterior tilt in pelvic, resulting in increased flexion in the lumbar spine
How do you row effectively?
Having good technique in rowing is key. This means you need to assess your stroke cycle. This cycle can be divided into five phases:
- Catch position: This is the beginning of the stroke. Your legs and back are fully compressed, with arms extended as the oar enters the water. Your shins should be fully vertical.
- Early drive phase: Here, your arms will remain straight as the legs engage, still maintaining the flexion in the hips and spine. At this point your legs and trunk extensors are the power source.
- Late drive phase: Your legs will have come into full extension and the hips will start to open as you lean back slightly. Your arms and shoulders will pull back to allow for continued acceleration of the blade through the water.
- Finish position: Here the stroke is completed by pulling the handle to the ribs while leaning back slightly. Your shoulders will be slightly behind the hips and your legs will be fully extended. Your hands will tap down to get the blade out of the water before the blade is feathered to allow for a more aerodynamic position as you enter the recovery phase.
- Recovery: In this part of stroke, the sequence is the reverse of the drive phase. Your arms extend first, followed by the pivot at the hips before controlling the slide as the knees bend back to catch position.
Why do rowers need good core strength?
Monger & Harrison (2016) describe core function as the ability of the core to successfully generate, transfer, and control force and motion in the lumbo-pelvic-hip (LPH) complex and extremities in all planes of motion. This basically means that you can create stiffness around your trunk whilst moving your arms and legs in different directions to generate and transfer force.
Pilates exercises incorporate complex movements that require stabilisation of the LPH complex while performing controlled movements of the extremities. These exercises elicit muscle activity that mimic activation patterns we often see in rowing.
Core training for rowers
On average, during the stroke cycle in rowing, the legs produce nearly half (46.4%) of the total rowing power. The trunk contributes 30.9% and the arms and shoulders produce 22.7% of the power. Therefore, the power of the stroke is actually in the coordination and utilisation of the legs and trunk. However, the largest reserve for increasing power can be found in efficient and effective utilisation of the trunk (Kleshnev, 2020).
The kinematic analysis by Pollock et al (2009) demonstrates high activity of the trunk extensors during the early drive phase. This allows rowers to maintain relatively fixed spinal positions and to use the spine as a “rigid lever” when the legs are transferring the forces to the handle of the oar.
What is interesting is that there is actually minimal co-contraction between the trunk extensors and anterior abdominal muscles at any point in the stroke.
The anterior abdominal muscles are most active in the late drive phase, in which their primary function is to act as a “breaking mechanism” to slow the torso swing when coming into the finish position. Therefore, there is a clear differentiation between the activity of the trunk extensors and abdominal muscles.
This finding should have significant implications on your core training as a rower, since exercises like planks will not be very beneficial as they involve very high co-contraction of anterior and posterior muscles.
As mentioned before, fatigue of any of the core musculature can contribute to lower back pain. Therefore, training the core muscles in similar activation patterns will be important to reduce risk of injury, as well as improving performance in the boat.
What are the best core exercises for rowers
Since the function of the core muscles is to provide a stable torse as force transfers from the foot plate to the handle, it is important to incorporate exercise with movement of the extremities and/or the hip to better mimic the utilisation of the core during the stroke cycle.
Although static abdominal exercises are not functional for rowing, building your core awareness and stability is an important starting point, particularly if you have back pain.
Try the following exercises to start to build core awareness:
- Femur arc: Use the Core filter at the top of the page
- Knee hovers: Use the Core filter at the top of the page
Once you have understood these and can control the LPH, move onto the exercises below. These exercises are designed to challenge the stable torso by including the movement of the extremities and to train the core muscles in a way similar to your rowing stroke.
You can follow the videos for demonstration and read on for a detailed explanation on why each exercise is important for the stroke.
Why should Rowers use Pilates?
As we have discussed, rowing is a full-body sport where lower back injuries are incredibly common. Because of this it has been shown that core training should be part of your training and development.
However, when it comes to lower back injury prevention and core training in muscles, it is important to always remember that the main function of the core is to create the “rigid lever” to effectively transfer power from the legs to the blade.
It is important for you as a rower, not to get stuck with doing traditional core exercises like planks and crunches, but to remember to incorporate movement of the extremities instead and use your power-producing muscles.
Pilates exercises are a great way for you to learn not only how to stabilise your hips, pelvis and lower back, but to move and use your core to generate and transmit force through effective biomechanical positions. This in turn will prevent lower back injury when in the boat.
If you are a rower, currently have back pain or have had back pain in the past and want to discuss your technique and what may work well for you in more detail, simply get in touch with our physio led pilates team and request a free phone call.
Education is key:
These blogs are designed to give information to everyone, however, it is important to remember that everyone is different! If you have not seen one of our therapists and have any questions about injuries, what you have read or whether this may be useful to you, please just ask.
At Complete Pilates we would advise you to always speak to your doctor, physiotherapist, or clinical Pilates instructor here at Complete Pilates if you are worried about starting a new exercise regime.
We are more than happy to help anyone and point you in the right direction. Our biggest belief is that education is key. The more you understand about your injury, illness and movement, the more you are likely to improve.