Red Line Zone

Sally Edwards’ term for an exercise intensity that evokes a heart rate of 90% to 100% of the maximum heart rate, where the anaerobic metabolism results in lactate accumulation and oxygen debt
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
References in periodicals archive ?
If a contestant exceeds their red line rate, they cannot answer the question and, for every second they are in the red line zone, the money they have won is reduced.
No decisions have been taken in respect of the Gosforth Transport Improvement Scheme, and nor will they, until we have formally consulted with motorists, pedestrians, shopkeepers and other interested parties," City council chiefs will this week finalise plans set to be put to the public which would see red line zones introduced along the High Street and other busy city roads.