The second type is characterized by the Rekers device (referenced above). With this type, both the seat and the footrests are free to slide fore and aft on a rail or rails integral to a stationary frame. Therefore, during use, the seat and the footrests move relative to each other, and both also move relative to ground. This type is often referred to as a "dynamic" rowing ergometer, although "dynamically balanced" would be a more accurate description. A static indoor rower of the Dreissigacker/Williams type, if mounted on wheels or slides to enable forward and rearward movement of the unit, is by definition "dynamically balanced". The accessory slide tracks correspond to the referenced stationary frame of the Rekers device. Casper Rekers is nevertheless credited as the first to utilize this motion type in a rowing ergometer. The effect, for the user, is a more realistic "on the water" sensation than that provided by a "stationary" rowing ergometer because the "dynamically balanced" type more closely replicates actual rowing wherein the seat and the boat move relative to each other, and both move relative to the water.
Now we start to decrease the intensity and increase the volume of these workouts, which will improve overall endurance and stamina. Complete this workout, 10 minutes of rowing at a hard steady-state pace (that’s one set), and take 3 minutes of rest between each set. The rates are set slightly lower so you should be able to focus on technique and solidify your posture at the catch, as well improving overall stroke length.
In the rowing machine category, there are a lot of models to chose from. They range in price from under $100 to well over $1500.  As you can imagine, you’re getting a different type of row machine at those ends of the spectrum, but within that variety there’s something for everyone.  To help guide you, we’ve listed our favorite row machine models and brands by price below:
At the catch the rower places the blade in the water and applies pressure to the oar by pushing the seat toward the bow of the boat by extending the legs, thus pushing the boat through the water. The point of placement of the blade in the water is a relatively fixed point about which the oar serves as a lever to propel the boat. As the rower's legs approach full extension, the rower pivots the torso toward the bow of the boat and then finally pulls the arms towards his or her chest. The hands meet the chest right above the diaphragm.
No matter the resistance we set or the power we applied, the machine remains sturdy, centered, and even. We amped up the intensity for 2000m sprints and found that the C2 supports consistent effort in a way water resistance can’t. The machine assists in keeping your intensity uniform, because it stores up remaining energy in the spinning flywheel. Comments about the ride feel of both Concept 2s were noticeably brief. As one tester put it, “It’s unremarkable because it’s good,” and leaves you free to focus on the effort you’re putting into your workout.

We just wanted to convey how much we appreciated all of Angela Hart's knowledge and expertise! We walked away with better, more efficient technique, ideas for skill work, different ways to incorporate rowing into workouts with our clients, and a better eye and cueing to help our athletes at our gym. The day flew by and was packed with great information! The instruction was professional and clear—just an overall awesome experience! So glad we attended!

It’s time for a revolution — a rowing revolution. For too long, the rowing machine has been the default loner in the corner of the gym that seems to always be available. The desperation needs to end. Rowing machines work three major power groups of muscles — arms, core and legs — and are some of the most efficient power tools. With this one machine, you can target your quadriceps, hamstrings, glutes, shoulders, upper back, arms and core. While there may not be an uptick in gym users, there’s undoubtedly an upswing in fitness studios opting to mix in a rowing component or focus on rowing as a critical fixture.
Bring the experience and benefits of rowing on water with this professionally-built Stamina water rower machine. The incorporated water resistance in this exercise machine offers smoother and more consistent rowing but more importantly, just like rowing in an actual body of water, this workout machine is built to provide infinite resistance--harder and faster rowing motions cause increased resistance. To tailor the resistance according to your fitness goals, simply increase or decrease water level using the siphon included in the package. Moreover, the steel frame construction and rowing beam ensure durability for years while the sturdy, pivoting footplates with straps offer comfort and security. To help you keep track of your fitness progress, this home gym machine is also equipped with a multi-function monitor that tracks total strokes, strokes per minute, distance, time, and calories burned. Other features include: wide molded seat, textured and padded handles for better and comfort
Of the four types of rowing machines or ergometers, water rowers are best at reproducing the sensation of on-water rowing. Their stroke cycles hold true to the dynamics of real paddling, and each stroke is punctuated with a splash! Water rowers have sliding seats to allow full-body cardiovascular workouts. (With cheaper rowing machines, in contrast, the seats don’t move.) These fitness machines tend to feature high quality parts and can last a lifetime.

Ergometer tests are used by rowing coaches to evaluate rowers and is part of athlete selection for many senior and junior national rowing teams. During a test, rowers will row a set distance and try to clock the fastest time possible, or a set time and try to row the longest distance possible. The most common distances for erg tests are 1000, 2000, 5000, 6000 or 10000 metres. The most common times for erg tests are 3 min, 5 min, 20 min, 30 min, and 1 hour.
Being able to easily store your rower is a huge plus. Make sure you investigate how well the machine stores, if it folds up or comes apart easily to be able to put it in your closet, or in other storage areas. As an example, the Concept2 Model D rowing machine folds up nicely by a simple pull pin located in the middle of the rower. Wheels on the bottom allow for easy moving.
Perhaps one of the best rowing machine benefits is the workout they give the lower body. In fact, rowing enthusiasts consider rowing primarily a lower-body workout. The main leg muscles involved are the quads in the upper front of the thighs, however the calves and glutes (buttocks) also feel the burn. Building strong legs and glutes will help you look amazing and working out the lower body actually burns calories at a faster rate. In addition to improved muscle strength and tone, resistance training on a row machine is a great way to maintain flexibility and balance.
Olympic rowers and experienced collegiate crews make the rowing stroke look easy and pretty darn effortless. But make no mistake, the rowing stroke is nuanced, complex, and can take years to master on the water. Luckily for those of you at the gym, the erg is a far simpler machine that can be perfected with some basic knowledge of technique and a little bit of practice. 
From a fitness perspective, the WaterRower Classic works 84 percent of your muscle mass, helping tone and strengthen your muscles while burning far more calories than most other aerobic machines. The exercise is also low impact, as it removes all the body weight from the ankles, knees, and hips, but still moves the limbs and joints through a full range of motion--from completely extended to completely contracted.

Rowing technique on the erg broadly follows the same pattern as that of a normal rowing stroke on water, but with minor modifications: it is not necessary to "tap down" at the finish, since there are no blades to extract from water; but many who also row on water do this anyway. Also, the rigid, single-piece handle enables neither a sweep nor a sculling stroke. The oar handle during a sweep stroke follows a long arc, while the oar handles during a sculling stroke follow two arcs. The standard handle does neither. But regardless of this, to reduce the chance of injury, an exercise machine should enable a bio-mechanically correct movement of the user. The handle is the interface between the human and the machine, and should adapt to the natural movement of the user, not the user to the machine, as is now the case. During competitions an exaggerated finish is often used, whereby the hands are pulled further up the chest than would be possible on the water, resulting in a steep angulation of the wrists - but even with a normal stroke, stop-action images show wrist angulation at the finish, evidence that the standard rigid, single-piece handle does not allow the user to maintain a bio-mechanically correct alignment of hands, wrists, and forearms in the direction of applied force. On the Concept 2 website "Forum", many regular users of the indoor rower have complained of chronic wrist pain. Some have rigged handgrips with flexible straps to enable their hands, wrists, and forearms to maintain proper alignment, and thereby reduce the possibility of repetitive strain injury. Rowing machine manufacturers have ignored this problem.