Effect of massage on boxers. Refer to the British Journal of Sports Medicine (Apr. 2000) study of the effect of massage on boxing performance, presented in Exercise 10.82

(p. 580). Two other variables measured on the boxers were blood lactate concentration (in mM) and the boxer’s perceived recovery (on a 28-point scale). On the basis of information provided in the article, the data shown in the accompanying table were obtained for 16 five-round boxing performances in which a massage was given to the boxer between rounds. Conduct a test to determine whether blood lactate level (y) is linearly related to perceived recovery (x). Use a = .10.

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Blood Lactate Level 3.8 Perceived Recovery 7 4.2 7 4.8 11 4.1 12 5.0 12 5.3 12 4.2 13 2.4 17 3.7 17 5.3 17 5.8 6.0 18 18 5.9 21 6.3 5.5 6.5 20 24 1282