[Method for recovering and concentrating lactic acid during interval training].
Sixteen athletes were divided into 2 equal groups, A and B. Then, they were put through a series of repetitive trial exercises consisting in a sequence of 400 m races run to a sub-maximum speed (75% of maximum speed) and with pauses of a length of time equal to race time, and repeated to exhaustion, i.e., inability to keep up required speed. Recuperation in between races varied: Group A was completely passive, motionless; Group B was still going, albeit rather slowly. The parameters measured included blood concentration of lactic acid at rest and on completion of exercise and overall distance covered. At rest, there was a significant difference of lactatemia between the two groups. During the exercise, the distance run by Group B was longer (by 187.5 m) that that covered by Group A, though the difference was not significant (0.05 < P < 0.10), but his lactatemia was significantly much lower (P < 0.05). On average, the race speed and the time for recuperation which were alternatively measured were just the same for the two groups.
Faye
J
J
Institut National Supérieur de l'Education Populaire et du Sport (INSEPS), Dakar.
Arabi
F
F
Faye
B
B
Seck
D
D
Cisse
F
F
Martineaud
J P
JP
Thiam
A
A
D000328:Adult; D002498:Centrifugation; D015444:Exercise / Q000502:physiology*; D006801:Humans; D019344:Lactic Acid / Q000097:blood / Q000302:isolation & purification*; D008297:Male; D009994:Osmolar Concentration; D012146:Rest; D012420:Running / Q000502:physiology*; D013053:Spectrophotometry
D019344:Lactic Acid
Mode de récupération et concentration d'acide lactique au cours d'un entraînement par intervalles.