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@peter_v
just in, from The Science of Sport:
Very interesting...some stats on power output from Vuelta, using VAM method:
Stage 14 - Puerto de Ancares (last 9 km, 8.2 %, 738 m). Joaquim Rodriguez: 25 min 48 sec, 20.93 Kph, VAM 1716 m/h, 6.09 W/kg
Stage 15: Lagos de Covadonga (Village Covadonga→next 8.0 km ,8.85 %, 708 m). Contador,Rodriguez: 25:01, 19.19 Kph, VAM 1698 m/h, 5.89 W/kg
Then Stage 16: Puerto de Pajares (last 10 km, 7.0 %, 700 m [678 m→1378 m]). Contador, Rodriguez: 27:02, 22.19 Kph, VAM 1554 m/h, 5.75 W/kg.
Obviously,we recognize that VAM on climbs is subject to issues around wind, and that once-off climbs are affected by tactics, but the numbers suggest that we're well below what we used to see (note that these are all quite short climbs, not the 40 min + of Galibier, Tormalet & Alp d'Huez), and it's not higher than this year's Tour. If anyone has SRM data to validate, let me know. These numbers courtesy @ammattipyoraily