As far as “racing”, I said an air rowing machine is better because the Concept2 is the only model used for indoor rowing competitions, setting world records, and entering your actual scores online. It is because their monitor can calculate the drag factor of the flywheel in real time and accurately calculate distance and time. Small changes such as dust build up, air temperature, and humidity will not change the times between different machines because the drag factor is calculated every stroke.
The First Degree Fitness Challenge AR (Adjustable Resistance) is designed and engineered by professional rowers and craftsman using only the highest degree of quality components – ensuring complete satisfaction in function, performance, and reliability.  With its patented Fluid Technology, First Degree Fitness has incorporated the truest emulation of sensation, sight, and sound of real on-water rowing captured in the private setting of your own home.
There isn’t a prescribed stroke rate for this workout, but it is important to make sure that you are keeping full length on the slide (legs). Be careful not to shorten up or scramble, as this will negatively affect technique and posture. The target is to hold the lowest average split possible, at a sprint pace that would be unsustainable over longer distances, for all four pieces. According to Frandsen, a competitive rower would “take advantage of every second of rest to ensure that each piece is of the highest intensity.” 
John Duke, creator of the WaterRower, was inspired to try his hand at invention while working at a subsidiary for U.S. Steel. He wanted to make an indoor machine that felt as much like real rowing as possible, with a focus on aesthetics. It took him two years to get the design right, moving past failed ideas such as a flipper in the tank instead of a clutch. What began as a series of doodles at his desk turned into a sculptural piece of exercise equipment that upends expectations in two ways: by bringing water indoors, and by looking elegant and artful when stored.
According to Men’s Total Fitness, rowing machines are not only great for aerobic workouts, but they also work all of your body's major muscle groups. What’s more, you don’t have to go to the gym to work out on a rowing machine, as many manufacturers make high-quality rowing machines -- and even rowing machines that fold up for easy storage -- that are suitable for home use. Two popular types of rowing machines are the water rower and the air rower.
Unlike the 1445, the Elite Wave Water Rowing Machine includes an upgraded, high-end fitness monitor and a chest strap heart rate sensor. Programmed to sync seamlessly with the multi-function monitor, the data the sensor provides allows you to tailor your workout. For example, you can target a certain heart rate for weight loss or to increase endurance by adjusting your rowing speed and therefore, your rowing intensity. In addition to pulse, the multi-function monitor also tracks distance, time, calories burned, stroke count and strokes per minute to further motivate you during your rowing session. For further customization, users can also add or remove water using the included siphon to either increase or decrease the resistance.
In addition to the aforementioned improved "on the water" sensation experienced by the user of a "dynamically balanced" rowing ergometer, there are also bio-mechanical and power delivery advantages. Bio-mechanically, throughout all phases of the stroke, the user's mass moves only a small distance relative to ground, therefore the user is not subject to the inertial stresses associated with the abrupt fore and aft directional changes experienced on a "stationary" rowing ergometer. With respect to power delivery: Casper Rekers, inventor of the "dynamically balanced" rowing ergometer, "performed tests comparing the indicated power output of a "stationary" versus a "dynamic" rowing ergometer - the subject gained 10-20% power output in the second case, representing additional power that could be applied to the flywheel instead of accelerating the bodyweight" of the user on the seat rail.[5]

Piston resistance comes from hydraulic cylinders that are attached to the handles of the rowing machine.[6] The length of the rower handles on this class of rower is typically adjustable, however, during the row the handle length is fixed which in turn fixes the trajectory that the hands must take on the stroke and return, thus making the stroke less accurate than is possible on the other types of resistance models where it is possible to emulate the difference in hand height on the stroke and return. Furthermore, many models in this class have a fixed seat position that eliminates the leg drive which is the foundation of competitive on water rowing technique. Because of the compact size of the pistons and mechanical simplicity of design, these models are typically not as large or as expensive as the others types.
Indoor rowing machines have come a long way and there are now a variety of sleek, highly-refined pieces of exercise equipment ready to get your cardio health on the upswing. Having a rower right there in your home can really be the push you need to get your muscles moving in a challenging yet comfortable way. Overall, rowing machines provide an outstanding way to increase fitness by burning calories and building muscle in a safe, low-impact way.

The First Degree Fitness Challenge AR (Adjustable Resistance) is designed and engineered by professional rowers and craftsman using only the highest degree of quality components – ensuring complete satisfaction in function, performance, and reliability.  With its patented Fluid Technology, First Degree Fitness has incorporated the truest emulation of sensation, sight, and sound of real on-water rowing captured in the private setting of your own home.
As you might expect, rowing machines provide a stellar upper-body workout. Rowers exercise the rhomboids in the shoulders, trapezii in the upper back, and lats in the lower back. The benefits of a stronger back and shoulders include improved posture as well as a reduction in back pain. In addition to your backside, rowing machines also provide a nice workout for your biceps, pecs, and abs, which helps you develop a stronger core. Because you need to maintain a strong grip on the oars, you’ll also develop stronger hands and wrists, which is a big plus for anyone who enjoys activities such as climbing or yoga.

If you’re interested in using a rowing machine for focused training — whether for outdoor rowing, an indoor competition, or as part of a larger fitness program — you’ll want air resistance. If you’re drawn to rowers for the enjoyability (alongside the full-body, cardio-plus-strength training efficacy) of a rowing workout, consider a machine with water resistance. 

In addition to its natural, fluid resistance, the Elite Wave Water Rowing Machine features many performance upgrades that push you to row harder, faster and longer. When mounting the rower, you will immediately notice the ease and customization of the footplates and straps. The footplates, which accommodate a wide range of foot sizes with their adjustable length, feature a heel strap that secures the feet while also allowing the heel to rise higher for a wider range of motion. There are also quick-adjust straps with finger loops so you can quickly secure your feet – even in the middle of the workout. Once you push, extend and bend, the seat glides atop the aluminum rowing beam, providing a smoother workout.

Women row in all boat classes, from single scull to coxed eights, across the same age ranges and standards as men, from junior amateur through university-level to elite athlete.[49][50] Typically men and women compete in separate crews although mixed crews and mixed team events also take place.[51] Coaching for women is similar to that for men.[52] The world's first women's rowing team was formed in 1896 at the Furnivall Sculling Club in London.[53]


1.) I keep reading about cracks and leaks that develop in the water tank. WaterRower even offers a tank repair kit for this very issue. It seems to me that this is a design flaw that they refuse to address, instead offering a fix for when it eventually occurs. Have you seen these tanks to eventually leak? I’m surprised they haven’t tried a one-piece tank.

Unlike high impact exercises, which can damage knees and the connective tissues of the lower body, rowing's most common injury site is the lower back. Proper technique is a necessity for staying injury free, with a focus on both mechanics and breathing, as correct rhythm, exhaling on the drive and inhaling on the recovery, is a stabilizing force for the upper body. Non-rowers commonly overemphasize the muscles of the upper body, while correct technique uses the large muscle of the thighs to drive much of the stroke. Also, good technique requires that the angle of the upper body is never too far forward, nor too far back, both of which jeopardize the lower back and compression injuries on the knees and hip flexor muscles. Proper technique however, can only be achieved if the design of the exercise equipment enables proper technique. The ubiquitous rigid, single-piece handle does not follow the natural movement of a user's hands, wrists, and forearms as the stroke progresses. It does not ensure or enable the bio-mechanically correct alignment of the hands, wrists, and forearms with the direction of the applied force. Typically, the user finishes the stroke with the wrists in an angulated position. It is incorrect to criticize this as "bad technique", when the equipment itself is the cause. Through no fault of their own, regular users of indoor rowers equipped with the standard single-piece handle, are prone to repetitive strain injury and chronic wrist pain (see more on this in "Rowing Technique" section, below).
The WaterRower Natural is handcrafted from solid Ash wood, finished with a honey oak stain and danish oil. The WaterRower's patented WaterFlywheel has been specifically designed to emulate the dynamics of a boat moving though water and is unsurpassed in its simulation of the physical and physiological benefits of rowing. WaterRower will not provide support or documentation for any product transported outside of the original country of purchase
Regarding comparability of results between machines: As stated, the above indoor rowing competitions use the Concept 2 rowing ergometer, currently the Model D, which like previous models, is equipped with an electronic performance monitor that compensates for differences in resistance adjustment (1989 US Patent US4875674A; Assignee: Concept 2). Therefore it is widely accepted that a result on one machine can be fairly compared with a result on another machine regardless of their respective resistance settings. The assumed consistency between machines would be correct if another, unmeasured resistance variable did not exist. This is the variability of the resistance of the elastic cord used to take up the chain and return the handle. The electronic performance monitor only measures the energy expended to spin the flywheel. It does this via small magnets embedded in the face of the flywheel which pass a sensor connected to the performance monitor (see patent US4875674A referenced above). The monitor does not measure the energy required to stretch the elastic cord, therefore unless the force required to stretch the elastic cord is a guaranteed constant, there is no guarantee that the performance monitor will display the actual total energy expended by the user.
By charter, the Schuylkill Navy’s object is "to secure united action among the several Clubs and to promote amateurism on the Schuylkill River."[23] Over the years, the group has had a role in certain ceremonial and state functions.[24] The success of the Schuylkill Navy and similar organizations contributed heavily to the extinction of professional rowing and the sport's current status as an amateur sport.[25]

As I mentioned, the rowing experience with the WaterRower is amazing. I bought the rower for myself, but my wife was curious and decided to try it out. She loves it, and now rows almost daily. We have a treadmill that neither of us has used since we started rowing - the WaterRower is a much better workout and much more enjoyable at the same time. It's easy to adjust the intensity, pace and duration of your exercise. There is nothing to change on the rower (* see note below), you just row harder or faster, adjust how far you lean forward and back during your stroke. The WaterRower will keep up with you as your fitness increases, all you need to do is keep throwing more and more at it.
Comparing the rowing machine to the stationary bike, the rowing machine is superior in terms of calories burned. Yet, it’s important to note that the stationary bike is also easy on the joints and only includes the lower body. So, if you have any upper body problems then the stationary bike will be a much better choice. In 30 minutes of cycling 12-13 miles per hour, an 125lb individual will burn around 225-250 calories.
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