What is an Ergometer?

Ergometer, ergo, indoor rower: one and the same

Three names, one machine. "Ergometer" is the formal label (from the Greek ergon, work) and turns up in Rowing Australia testing paperwork, AIS sport science write-ups and the kind of coach reports that get filed at season end. "Ergo" is the word a Year 9 Toowong rower and a King's Cup squad member both use without thinking. "Rowing machine" or "indoor rower" is what the F45 down the road puts on the sign. All three describe the same bit of kit: sliding seat, footplate, handle on a chain, and a flywheel that fights you back.

How an ergometer works

Pull the handle and the chain spins a flywheel. On a Concept2 that flywheel is braked by air, on a WaterRower by water in a tank, on a Hydrow by magnets. The clever bit is what happens between strokes: a sensor watches how fast the flywheel slows down, calculates the work that went into the last stroke, and converts that figure into a notional metre rowed. The monitor stitches the numbers together in real time and serves them up as split, watts, distance and calories per hour.

On a RowErg, the lever sitting on the side of the flywheel cage (the damper) opens or closes vents to change how much air gets in. Set it on 1 and the flywheel spins up easily, like a light single. Wind it to 10 and it feels heavy, more like dragging an eight. The setting changes the feel of the catch, but the score depends on the drag factor, which the monitor reports in the More Options menu and corrects for damper position and the air temperature in the shed. Pop a split into the ergo pace calculator to convert it across to watts, kilojoules and projected splits over every standard test distance.

The Concept2 standard down under

The RowErg (the line previously sold as Model D and Model E) sits at the centre of Australian rowing testing because of one simple thing: Concept2 Australia ships the same box to every shed, the calibration has barely shifted in forty years, and a score pulled at Banks BBC in Brisbane can be lined up directly against a score pulled at Mercantile in Melbourne with no asterisk. That is why Rowing Australia uses it for talent identification, why the Australian Rowing Team trains on it at the Australian Institute of Sport (AIS), and why NSWIS, VIS and QAS scholar testing protocols are all written around the C2 monitor file.

WaterRower, Hydrow, NordicTrack, Echelon and the rest of the home-fitness brands build perfectly decent machines, but none of them publish to the Concept2 scale. A 2k personal best set on a magnetic rower at the gym does not convert. State selectors will not look at it, schools coaches will not enter it on the trial sheet, and the AIS will quietly ask you to come back when you have a Concept2 read. The ergo also strips out the synchronisation demand of a crew boat: the PM5 measures one rower in isolation, while race-day boat speed at Penrith depends on eight Aussies catching, driving and recovering in tight synchronisation with each other.

What the readouts mean

• 500m split: the projected time to cover the next 500 metres at your current effort. A reading of 1:45 means half a kilometre would take one minute forty-five at that pace. Every Aussie squad talks in splits before anything else.
• Watts: the power your pull is putting into the flywheel right now. Concept2 publishes the relationship as watts = 2.80 / (split_seconds / 500)^3. A 1:45 split sits around 268 W, a 1:30 split jumps to about 425 W.
• Calories per hour: roughly watts x 4 + 300, where the 300 covers basal metabolism. Handy for a session-load read, not a precision burn figure.
• Stroke rate: strokes per minute. UT2 in an Aussie programme is 18-20, UT1 sits at 20-24, AT lands at 26-28, race pace climbs into the 32-38 band.
• Distance: a metres-equivalent figure derived from flywheel deceleration. The shed floor stays where it is.

Where the ergo sits in Aussie clubs and schools

In an Australian programme the ergo earns its space three ways. First, it keeps the squad training when the conditions take the water out of play, whether that is a wild westerly on Sydney Harbour, a brown Yarra after a downpour, or a closed Penrith course for a regatta build. Second, it gives coaches a clean test bench: the 2k, the 5k, the 30-minute and the 6k winter benchmark are the pieces that get logged. Third, and this is the one parents see, the December and February ergometers at GPS, AGSV and CAS schools are the numbers coaches lean on when they start drafting seat-race orders for 1st VIII trials.

That data only earns its keep when it lives somewhere the coach can actually find it later. Recording every ergometer test, watching the trend over a Penrith camp or a pre-Head of the Yarra block, and ranking athletes against age and weight standards is the work that holds up when a parent rings asking why their daughter is in the 2nd VIII. Row HQ's coach tools file every ergo score against the rower it belongs to so the season trajectory is one click away.

The ergo test sheet in Aussie programmes

The standard ergometer pieces that turn up on Australian squad sheets:

• 2,000m (2k): the Olympic distance and the headline number in Aussie selection. Six to eight minutes for elite men, seven to nine for elite women. The 2k ergo is what AGSV, CAS and GPS coaches put at the top of the trial sheet.
• 5,000m (5k): aerobic test, 17-22 minutes for most senior squad rowers.
• 30 minutes: metres covered in half an hour at a sustainable threshold. The yardstick for endurance going into a winter block.
• 60 minutes: the long aerobic piece, sat at UT1 or UT2 and used to read who is built for the bigger boats.
• 4 x 2,000m or 8 x 500m intervals: race-specific power-and-recovery work, the kind of session that turns up six weeks out from Champs.

Each piece gets logged with the rower's bodyweight on the day (lighter athletes carry a power-to-weight handicap that the World Rowing weight-adjusted formula cleans up) and the drag factor the monitor reported during the test.

Indoor rowing as its own sport

The ergo has grown beyond the boatshed. The Australian Indoor Rowing Championships is the national 2k event and pulls entries from clubs, schools, masters and the Rowing Australia talent pathway every year. The World Rowing Indoor Championships sits above that on the global ladder, and Concept2's online challenges (the Holiday Challenge, the Million Metre Club, the team relays) run year-round. CrossFit boxes from Bondi to Fremantle now run their own ergo leagues, and plenty of Aussies who have never sat in a single have a respectable 2k to their name from a Saturday-morning class.