Kostka T, Bonnefoy M, Arsac L M, Berthouze S E, Belli A, Lacour J R
Service de Médecine Gériatrique, Centre Hospitalier Lyon-Sud, Pierre-Bénite, France.
Eur J Appl Physiol Occup Physiol. 1997;76(1):81-7. doi: 10.1007/s004210050216.
The aim of this study was to investigate the relationship between maximal anaerobic power (Pmax) and corresponding optimal velocity (Vopt) and habitual physical activity (PA) on the one hand and with maximal oxygen consumption (VO2max) on the other hand, in elderly women. Twenty-nine community dwelling, healthy women aged 66-82 years participated in the study. PA was evaluated using the Questionnaire d'Activite Physique Saint-Etienne (QAPSE) and expressed using two QAPSE activity indices: mean habitual daily energy expenditure (MHDEE) and daily energy expenditure corresponding to leisure time sports activities (sports activity). The subjects' Pmax and Vopt were measured while they cycled on a friction-loaded non-isokinetic cycle ergometer. Pmax was expressed relative to body mass [Pmax/kg(W.kg-1)], and relative to the mass of two quadriceps muscles [Pmax/Quadr(W.kg-1Quadr)]. A negative relationship between Pmax/kg (Spearman's r = -0.56; P < 0.01), Pmax/Quadr (r = -0.53; P < 0.01) and Vopt (r = -0.45; P < 0.05) and age was found. Pmax/kg was positively associated with MHDEE (r = 0.51; P < 0.01) and sports activity (r = 0.58; P < 0.01), as were Pmax/Quadr and Vopt (r = 0.55; P < 0.01 and r = 0.54; P < 0.01, respectively). Pmax/kg, Pmax/Quadr and Vopt correlated positively with VO2max. The positive relationship between ergometer measurements and PA indices was similar to that between VO2max and PA. Pmax/kg was, moreover, closely related to Vopt (r = 0.77; P < 0.001). When a multiple stepwise regression analysis was used to select the variables influencing ergometer measurements, MHDEE contributed significantly to Pmax/kg variance, whereas sports activity contributed to Pmax/Quadr and Vopt variances. In conclusion, the data from this cross-sectional study suggest that in healthy elderly women habitual PA, and especially leisure time PA, alleviates the decline of the Pmax of the quadriceps muscles.
本研究旨在调查老年女性中最大无氧功率（Pmax）与相应的最佳速度（Vopt）及习惯性身体活动（PA）之间的关系，以及它们与最大摄氧量（VO₂max）之间的关系。29名年龄在66 - 82岁的社区健康女性参与了该研究。使用圣艾蒂安身体活动问卷（QAPSE）评估PA，并通过两个QAPSE活动指数来表示：平均习惯性每日能量消耗（MHDEE）和与休闲时间体育活动相对应的每日能量消耗（体育活动）。在受试者在摩擦加载的非等动自行车测力计上骑行时测量其Pmax和Vopt。Pmax以相对于体重[Pmax/kg（W.kg⁻¹）]和相对于两块股四头肌的质量[Pmax/Quadr（W.kg⁻¹Quadr）]来表示。发现Pmax/kg（斯皮尔曼r = -0.56；P < 0.01）、Pmax/Quadr（r = -0.53；P < 0.01）和Vopt（r = -0.45；P < 0.05）与年龄呈负相关。Pmax/kg与MHDEE（r = 0.51；P < 0.01）和体育活动（r = 0.58；P < 0.01）呈正相关，Pmax/Quadr和Vopt也是如此（分别为r = 0.55；P < 0.01和r = 0.54；P < 0.01）。Pmax/kg、Pmax/Quadr和Vopt与VO₂max呈正相关。测力计测量值与PA指数之间的正相关关系与VO₂max和PA之间的关系相似。此外，Pmax/kg与Vopt密切相关（r = 0.77；P < 0.001）。当使用多元逐步回归分析来选择影响测力计测量值的变量时，MHDEE对Pmax/kg的方差有显著贡献，而体育活动对Pmax/Quadr和Vopt的方差有贡献。总之，这项横断面研究的数据表明，在健康老年女性中，习惯性PA，尤其是休闲时间的PA，可减轻股四头肌Pmax的下降。
