马拉松训练对中年男性次最大运动时血浆乳酸反应的影响。
Effect of marathon training on the plasma lactate response to submaximal exercise in middle-aged men.
作者信息
Rumley A G, Taylor R, Grant S, Pettigrew A R, Findlay I, Dargie H
机构信息
Department of Pathological Biochemistry, Western Infirmary, Glasgow.
出版信息
Br J Sports Med. 1988 Mar;22(1):31-4. doi: 10.1136/bjsm.22.1.31.
Twenty-one previously sedentary male volunteers (aged 35-50 years) undertook a defined marathon training programme lasting 30 weeks. At weeks 0 (T1), 15 (T2) and 30 (T3) they underwent measurement of maximal oxygen uptake (VO2 max), submaximal VO2 and submaximal plasma lactate concentration during cycle ergometry. No exercise was taken for 24-48 hours prior to testing. During training aerobic power increased significantly (p less than 0.001) from an initial VO2 max at T1 of 33.9 +/- 6 (mean +/- sd) ml.kg-1min-1 to 39 +/- 5.6 ml.kg-1min-1 at T2 but the T3 value of 39.2 +/- 5.2 ml.kg-1min-1 was not significantly different from that at T2. Plasma lactate concentration of 4 mmol.l-1 (OBLAw) occurred at a significantly (P less than 0.05) higher workload (155 +/- 28 w) at T2 compared with T1 (132 +/- 30 w) but the T3 figure was 137 +/- 34 w. OBLA VO2 at T1 was 2.04 +/- 0.42 l.min-1, at T2 was 2.24 +/- 0.04 l.min-1 but at T3 was 2.03 +/- 0.30 l.min-1 (T1:T2 P less than 0.05, T1:T3 NS). OBLA % VO2 max at T1 was 75 +/- 12%, at T2 was 73 +/- 11% but at T3 was 62 +/- 10% (T1:T2 NS, T1:T3 P less than 0.01).
21名先前久坐不动的男性志愿者（年龄在35 - 50岁之间）参加了一项为期30周的马拉松专项训练计划。在第0周（T1）、第15周（T2）和第30周（T3），他们在进行自行车测力计测试时，接受了最大摄氧量（VO2 max）、次最大摄氧量和次最大血浆乳酸浓度的测量。测试前24 - 48小时不进行任何运动。在训练期间，有氧能力显著提高（p小于0.001），从T1时最初的VO2 max 33.9±6（平均值±标准差）ml·kg-1·min-1增加到T2时的39±5.6 ml·kg-1·min-1，但T3时的值39.2±5.2 ml·kg-1·min-1与T2时无显著差异。与T1（132±30瓦）相比，T2时血浆乳酸浓度达到4 mmol·l-1（无氧阈负荷，OBLAw）时的工作量显著更高（P小于0.05）（155±28瓦），但T3时为137±34瓦。T1时的无氧阈摄氧量（OBLA VO2）为2.04±0.42 l·min-1，T2时为2.24±0.04 l·min-1，但T3时为2.03±0.30 l·min-1（T1:T2，P小于0.05；T1:T3，无显著差异，NS）。T1时的无氧阈占最大摄氧量百分比（OBLA % VO2 max）为75±12%，T2时为73±11%，但T3时为62±10%（T1:T2，无显著差异，NS；T1:T3，P小于0.01）。
Zotero 插件