Jetté M, Kerr R, Leblanc J L, Lewis W
Department of Kinanthropology, Faculty of Health Sciences, University of Ottawa, Ontario, Canada.
Aviat Space Environ Med. 1988 Apr;59(4):340-4.
This study evaluated the effects of excess body fat on fine motor performance prior to and following moderate and heavy intensities of physical exertion. An attempt was made to demonstrate a reduction in psychomotor performance, postexercise, among obese non-fit subjects who might be seen as occupationally unsuitable for certain military or civilian operational roles. One hundred healthy males (mean age +/- S.D. = 29.1 +/- 6.0 years) volunteered for the study. Motor performance was assessed using the Canadian National Research Council tracometer, a device which integrates choice reaction time and pursuit tracking on a step-input subject-paced pursuit tracking task. These measurements were taken prior to and following moderate and heavy treadmill exercise (at 6 METs and 9 METs, which produced (mean +/- S.D.) heart rates of 130 +/- 15 bpm and 173 +/- 17 bpm, respectively). When the subjects were classified according to % body fat (desirable less than or equal to 14.9%; overfat 15-24.9%; obese greater than or equal to 25%), there were no significant differences in postexercise motor performance among these groups. For all groups, the moderate exercise had no effect on tracometer performance, while heavy exercise led to an immediate deterioration in performance followed by a slight improvement. In this particular experimental protocol, postexercise fine motor performance was not significantly influenced by excess body fat.
本研究评估了在中等强度和高强度体力消耗之前及之后，过多体脂对精细运动表现的影响。研究试图证明，对于那些可能被视为在职业上不适合某些军事或民事作战任务的肥胖且身体不健康的受试者，运动后其心理运动表现会下降。一百名健康男性（平均年龄±标准差=29.1±6.0岁）自愿参与了这项研究。使用加拿大国家研究委员会的跟踪仪评估运动表现，该设备在一个由受试者自行控制步速的阶跃输入跟踪任务中，综合了选择反应时间和追踪跟踪。这些测量在中等强度和高强度跑步机运动之前及之后进行（分别为6代谢当量和9代谢当量，运动时平均心率±标准差分别为130±15次/分钟和173±17次/分钟）。当根据体脂百分比对受试者进行分类时（理想状态下小于或等于14.9%；超重为15 - 24.9%；肥胖大于或等于25%），这些组之间运动后的运动表现没有显著差异。对于所有组而言，中等强度运动对跟踪仪表现没有影响，而高强度运动导致表现立即变差，随后稍有改善。在这个特定的实验方案中，运动后精细运动表现并未受到过多体脂的显著影响。
