Institute of Food, Nutrition, and Human Health, Massey University Auckland, Auckland University , New Zealand.
J Sports Sci Med. 2007 Dec 1;6(4):477-83. eCollection 2007.
Age-associated changes in power and maximal oxygen consumption (VO2max) were studied in a cross section of endurance trained cyclists. Subjects (n = 56) performed incremental cycling exercise, during which capillary blood lactate [La(-)] was measured. Power output increased by 30 Watts during each 5 minutes stage, with initial power output based on individual ability. When [La(-)] was >4.5 mmol·L(-1), subjects were given a 10 min recovery at a power output approximately 50% below estimated power at [La(-)]4mmol. Subjects then performed an incremental test (1 minute stages) to VO2max. Decline in VO2max was 0.65 ml·kg(-1)·min(-1)·year(-1) (r = -0.72, p < 0.01) for males, and 0.39 ml·kg(-1)·min(-1)·year(-1) (r = -0.54, p < 0.05) for females. Power at VO2max decreased by 0.048 W kg(-1)·year(-1) (r = -0.72, p < 0.01) in males. Power at [La(-)]4mmol decreased by 0.044 W kg(-1)·year(-1) (r = -0.76, p < 0.01) in males, and by 0.019 W kg(-1)·year(-1) (r = -0.53, p < 0.05) in females. Heart rate at VO2max (HRmax) showed a weaker correlation with age in males (r = -0.36, p < 0.05). The age-associated changes in maximum aerobic power and sub-maximal power were gender- specific, thus suggesting different age-related effects on the systems which support exercise in males and females. Key pointsVO2max decreased with age by 0.65 ml·kg(-1)·min(-1)·year(-1) in male, and by 0.39 ml·kg(-1)·min(-1)·year(-1) in female endurance trained cyclists.Power at VO2max decreased with age by 0.048 Watts·kg(-1)·year(-1) in male endurance trained cyclists.Sub-maximal power at a blood lactate concentration of 4mmol·L(-1) decreased by 0.044 Watts·kg(-1)·year(-1) in male, and by 0.019 Watts·kg(-1)·year(-1) in female endurance trained cyclists.
年龄相关的力量和最大摄氧量（VO2max）变化在耐力训练的自行车运动员的横断面研究中进行了研究。 受试者（n = 56）进行递增式自行车运动，在此过程中测量毛细血管血乳酸[La（-）]。 每个 5 分钟阶段的功率输出增加 30 瓦特，初始功率输出基于个人能力。 当[La（-）]> 4.5 mmol·L（-1）时，受试者在功率输出约为[La（-）] 4 mmol 时的 50％以下的估计功率下进行 10 分钟的恢复。 然后，受试者进行 VO2max 递增测试（1 分钟阶段）。 男性 VO2max 的下降为 0.65 ml·kg（-1）·min（-1）·年（-1）（r = -0.72，p <0.01），女性为 0.39 ml·kg（-1）·min（-1）·年（-1）（r = -0.54，p <0.05）。 男性 VO2max 时的功率下降 0.048 W kg（-1）·年（-1）（r = -0.72，p <0.01）。 男性[La（-）] 4 mmol 时的功率下降 0.044 W kg（-1）·年（-1）（r = -0.76，p <0.01），女性下降 0.019 W kg（-1）·年（-1）（r = -0.53，p <0.05）。 男性 VO2max 时的心率（HRmax）与年龄的相关性较弱（r = -0.36，p <0.05）。 最大有氧能力和次最大功率的年龄相关变化在男性中具有性别特异性，因此表明男性和女性的运动支持系统具有不同的与年龄相关的影响。 关键点：男性耐力训练自行车运动员的最大摄氧量（VO2max）随年龄增长每年下降 0.65 ml·kg（-1）·min（-1），女性下降 0.39 ml·kg（-1）·min（-1）。男性耐力训练自行车运动员的 VO2max 时的功率随年龄每年下降 0.048 瓦特·kg（-1）。男性在 4 mmol·L（-1）血乳酸浓度时的次最大功率下降 0.044 瓦特·kg（-1）·年（-1），女性下降 0.019 瓦特·kg（-1）·年（-1）。
