Daniels 2022, Daniels’ Running Formula (4th ed.)

Jack Daniels’ training text (Human Kinetics, 4th edition, ©2022), the origin of “threshold (T) pace” runs and “cruise intervals”: tempo runs of about 20 minutes at threshold, or a larger threshold dose broken into 5-to-15-minute reps with short recoveries, paces set from race performance via the VDOT tables. Influential and widely used; a coaching framework rather than a controlled trial, so strong for the prescription and the convention, not for proof of superiority.