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. Author manuscript; available in PMC: 2019 Sep 9.
Published in final edited form as: Sci Am. 1978 Dec;239(6):148–163. doi: 10.1038/scientificamerican1278-148

Figure 12 Table I.

Figure 12 Table I

HARVARD TEAM’S TRACK RECORDS for the first season on the new track (color) show that the track substantially enhances running performance. Each Harvard runner’s performance on the new track is compared with his performance at the Intercollegiate Athletic Association of America and the Heptagonal meets, which were run on standard tracks. The new track conveyed an average speed advantage of nearly 3 percent. Further analysis of these statistics shows the probability is about 93 percent that any given individual will run faster on the new track. Similar statistics are given for preceding year (white), when Harvard team’s home meets were run on cinder track.