I altered the typical version of the norwegian approach, and tuned it to about 85 running miles per week, with racing focus on 5k-10k, and have seen significant success.
Monday (~20 mi):
AM: 2mi wu + 4x3k @3:35-3:40 (3 min jog) +1.25mi cd (grass, dirt or other technical terrain)
PM: 1mi wu + 10x1k @ 3:08-3:10 (60s full rest) + 1mi cd (track)
Tuesday:
AM: 8mi easy + 4 strides
PM: 30 min XT
Wednesday:
AM: 8mi easy + 4 strides
PM: 30 min XT
Thursday (~19 mi):
AM: 1.5mi wu + 6x2k @3:30-3:35 (2 min jog) + 1.5mi cd (grass, dirt or other technical terrain)
PM: 1mi wu + 20x400m @70-72 (30s full rest) +1.5mi cd (track)
Friday:
AM: 8mi easy + 4 strides
PM: 30 min XT
Sat: 15 mi easy (gravel)
Key notes:
- Two sessions rather than three - Have found that I recover better with two days in between workout days, not because I am above threshold effort, but the sheer volume requires two days to recover from.
- Surface notations - Taking a nod from the Ethiopians, I have found that doing the volume-heavy morning threshold sessions on a cross-country loop or other technical surface and the long run on gravel provides muscular benefits in the lower leg muscles (gastrocnemius, soleus, and Achilles tendon), improves running economy, and decreases jarring impact upon the knee, instead strengthening the stabilizer muscles. This incorporation is roughly 35% of total weekly volume being done on a softer surface than asphalt or concrete.
- Absence of hill-work - "The intention of hill work in the Norwegian approach is to maintain high-end speed and neuromuscular turnover," according to Bakken, as short bursts of speed helps prevent the neuromuscular system from becoming too attuned to a single, moderate pace, or threshold effort. However, strides can incorporate this same stimulus, without the spike in lactate and soreness that comes the next day with hill repeats.
- Incorporation of XT - The primary proponent of the Norwegian method being volume, the incorporation of greater aerobic stimulus is therefore positive, but comes at the cost of injury. Arc trainer, which shares the most similiarities of any machine to traditional running, can provide similar aerobic stimulus at the Zone 1 level without any mechanical cost.
This is a biweekly system, with alternate evening workouts, but as this post is already long, I can provide the full system in another post if there are further questions.