Loprinzi Paul D, Cardinal Bradley J, Gilham Ben
Bellarmine University, Louisville, KY, USA.
Am J Audiol. 2012 Jun;21(1):33-40. doi: 10.1044/1059-0889(2011/11-0024). Epub 2012 Jan 23.
As a follow-up to previous smaller scale studies, the purpose of the present study was to examine the link between cardiorespiratory fitness and hearing sensitivity using a nationally representative U.S. sample of adults.
Data from the 1999-2004 National Health and Nutrition Examination Survey (NHANES; U.S. Centers for Disease Control and Prevention [CDC], 2011) were used in the analyses. After exclusions, the final sample included 1,082 NHANES participants ages 20-49 years. Maximum oxygen uptake (VO(2max)) was obtained from an established nonexercise prediction equation and through heart-rate extrapolation during a treadmill-based submaximal test. Audiometry data were objectively measured to obtain estimates of low (LPTA) and high (HPTA) pure-tone frequency average.
VO(2max) was not associated with hearing sensitivity when using the heart-rate extrapolation method but was significantly associated with hearing sensitivity (for women) when applying the nonexercise prediction equation for both LPTA and HPTA (p < .01). Women with higher predicted cardiorespiratory fitness were 6% more likely than women with lower predicted cardio-respiratory fitness to have good hearing compared to worse hearing.
Cardiorespiratory fitness was associated with hearing sensitivity when using the nonexercise prediction equation to measure VO(2max). Further studies are needed to confirm these findings. Findings suggest a potentially auditory-protective effect of cardiorespiratory fitness.
作为先前小规模研究的后续，本研究的目的是使用具有全国代表性的美国成年人样本，检验心肺适能与听力敏感度之间的联系。
分析采用了1999 - 2004年国家健康与营养检查调查（NHANES；美国疾病控制与预防中心[CDC]，2011年）的数据。排除相关因素后，最终样本包括1082名年龄在20 - 49岁之间的NHANES参与者。最大摄氧量（VO₂max）通过既定的非运动预测方程以及在基于跑步机的次极量测试中通过心率外推法获得。听力测定数据通过客观测量来获取低纯音频率平均（LPTA）和高纯音频率平均（HPTA）的估计值。
使用心率外推法时，VO₂max与听力敏感度无关，但在应用非运动预测方程计算LPTA和HPTA时，VO₂max与听力敏感度（对女性而言）显著相关（p < 0.01）。与心肺适能预测值较低的女性相比，心肺适能预测值较高的女性听力良好而非较差的可能性要高6%。
在使用非运动预测方程测量VO₂max时，心肺适能与听力敏感度相关。需要进一步研究来证实这些发现。研究结果表明心肺适能可能具有听觉保护作用。
