REF-101 · Fiskerstrand & Seiler, 2004 · Scandinavian Journal of Medicine & Science in Sports, Vol. · Paper

Training and Performance Characteristics among Norwegian International Rowers 1970-2001

Blimited evidenceMeasured on elite to world-class athletesWritten before October 2026, being re-checked

Fiskerstrand & Seiler quantified how training volume, organization and physical capacity changed among Norwegian rowers who won international medals between 1970 and 2001. Physiological test results and performance history were available for all 28 identified athletes (27 alive); 21 of 27 answered a detailed training questionnaire.

From the 1970s to the 1990s VO2max rose 12% (5.8 ± 0.2 → 6.5 ± 0.4 L·min−1) and 6-min ergometer performance rose almost 10%, while training shifted toward more low-intensity volume and less race-pace/supramaximal work — a pattern the authors describe as "polarized".

Participants

n=28 Norwegian rowers with international medals 1970-2001 (27 alive; test and performance data for all, questionnaire responses from 21).

Protocol

Retrospective descriptive study of Norwegian rowers who won international medals between 1970 and 2001: twenty-eight athletes identified, 27 alive (from the abstract).
Physiological test results and performance history available for all athletes; a detailed questionnaire on training during their internationally competitive years answered by twenty-one of 27.
Compared from the 1970s to the 1990s: VO2max, 6-min ergometer rowing performance, monthly hours by blood-lactate intensity (< 2 mM vs ~8-14 mM), annual training volume and the use of altitude training. No control group, no intervention.

Key Results

VO2max +12%: 5.8 ± 0.2 L·min−1 (1970s) → 6.5 ± 0.4 L·min−1 (1990s).
6-min ergometer performance: almost +10%.
Low-lactate training (< 2 mM): 30 → 50 h/month (+67%, arithmetic).
Race-pace and supra-maximal training (~8-14 mM lactate): 23 → ~7 h/month (about −70%, arithmetic).
Total training volume: +~20%, from 924 to 1128 h/year.
Altitude training moved from a pre-competition peaking tool to periodic 2-3-week camps integrated into winter preparation.
The authors read the trend as consistent with other sports: a high volume of low-intensity training balanced against regular bouts at 90-95% of VO2max ("polarized" organization).

Practical Application

Across three decades of Norwegian international-medal rowers, the training that accompanied a 12% rise in VO2max and an almost 10% rise in 6-min ergometer performance was MORE low-intensity volume (30 → 50 h/month below 2 mM lactate), LESS race-pace/supramaximal work (23 → ~7 h/month) and about 20% more total hours (924 → 1128 h/year).
Elite practice converged on a large easy base plus regular hard sessions around 90-95% VO2max, not on more threshold or race-pace hours; this is descriptive, historical evidence (equipment, selection and sports science also changed over those years), so treat it as convergent support for a polarized-type organization rather than proof of cause.
For an intervention-level test of a low-intensity-heavy distribution see REF-100 (Ingham 2008, rowers) and the polarized synthesis REF-079.

Limitations

Retrospective, questionnaire-based (21 respondents), no control group; performance and physiology changes over 30 years cannot be attributed to training organization alone.
How this entry was checked and changed
Why this level

regraded 2026-09-27 from A: retrospective questionnaire in a small elite cohort (21 of 27 respondents), no control, no experiment

Content correction 2026-09-27
Added the abstract's sample (n=28 medallists, 21 questionnaire respondents), absolute VO2max values (5.8 → 6.5 L·min−1), the ~10% 6-min ergometer gain, total volume 924 → 1128 h/year (+~20%) and the altitude-camp change; the 30 → 50 and 23 → 7 h/month and +12% figures were already correct.
Level A -> B (retrospective questionnaire cohort); Sport "cycling, running, rowing" -> rowing; "1970-2000" -> 1970-2001.
Lead rewritten as the study's own finding; "validates the polarized model" softened to descriptive convergent support; REF-096 is no longer cited as "RCT data for polarized" because that trial did not test polarized training.
REF-079 was an empty stub and is now filled: it is a C+ narrative review (Hydren & Cohen 2015), so pointers for polarized-vs-other evidence now lead with the trial REF-303.
2026-09-28: added Protocol from the abstract (Europe PMC, DOI 10.1046/j.1600-0838.2003.370.x, PMID 15387804).