Jacobson B H, Wright T, Dugan B
Oklahoma State University, Stillwater, USA.
Int J Sports Med. 2000 Jul;21(5):356-9. doi: 10.1055/s-2000-3775.
The purpose of this study was to compare load carriage energy expenditure with and without using hiking poles. Twenty male volunteers aged 20-48yr (Mean=29.8yr) completed two randomly ordered submaximal treadmill trials with poles (E) and without poles (C). Poles and load (15 kg backpack) were fitted for each subject according to the manufacturers' suggestions. Heart rates (HR), minute ventilation (V(E)), oxygen consumption (O2), caloric expenditure (Kcal), and rating of perceived exertion (RPE) were recorded at the end of each minute. Two trials separated by one week consisted of a constant treadmill speed of 1.5 mph and 1 min at 10% grade, 2 min at 15% grade, 2 min at 20% grade, and 10 min. at 25% grade. Mean HR (E = 144.8 +/- 24.4 b x min(-1); C = 144.0 +/- 25.7 b x min(-1)) and mean V(E) (E=51.4 +/- 15.8L x min(-1); C=50.8 +/- 17.0L x min(-1)), VO2 (E = 26.9 +/- 6.1 ml x kg(-1) x min(-1); C = 27.4 +/- 6.6 ml x kg(-1) x min(-1)), and Kcal (E = 10.6 +/- 2.9 Kcal x min(-1); C = 10.8 +/- 3.1 Kcal x min(-1)) were not significantly different between the two conditions. RPE (E = 13.28 +/- 1.2; C = 14.56 +/- 1.2) was significantly lower (P < 0.05) with hiking poles. Analysis of paired time points yielded no significant differences in HR, VO2, V(E), and Kcal, however, RPE means were significantly lower for 5 of the last 7 trial minutes with the use of poles. These results suggest that during load carriage on moderate grade, the weight and use of hiking poles does not increase energy expenditure but may provide reduced perceptions of physical exertion.
本研究的目的是比较使用登山杖与不使用登山杖时负重行走的能量消耗。20名年龄在20 - 48岁（平均 = 29.8岁）的男性志愿者完成了两项随机排序的次最大强度跑步机试验，一次使用登山杖（E组），另一次不使用登山杖（C组）。根据制造商的建议为每位受试者配备登山杖和负重（15千克背包）。在每分钟结束时记录心率（HR）、分钟通气量（V(E)）、耗氧量（O2）、热量消耗（千卡）和主观用力程度评分（RPE）。两项试验间隔一周，包括在跑步机上以1.5英里/小时的恒定速度行走，以及在10%坡度下行走1分钟、15%坡度下行走2分钟、20%坡度下行走2分钟和25%坡度下行走10分钟。平均心率（E组 = 144.8 ± 24.4次/分钟；C组 = 144.0 ± 25.7次/分钟）、平均分钟通气量（E组 = 51.4 ± 15.8升/分钟；C组 = 50.8 ± 17.0升/分钟）、耗氧量（E组 = 26.9 ± 6.1毫升/千克/分钟；C组 = 27.4 ± 6.6毫升/千克/分钟）和热量消耗（E组 = 10.6 ± 2.9千卡/分钟；C组 = 10.8 ± 3.1千卡/分钟）在两种情况下无显著差异。使用登山杖时主观用力程度评分（E组 = 13.28 ± 1.2；C组 = 14.56 ± 1.2）显著更低（P < 0.05）。对配对时间点的分析显示，心率、耗氧量、分钟通气量和热量消耗无显著差异，然而，在试验的最后7分钟中有5分钟，使用登山杖时主观用力程度评分均值显著更低。这些结果表明，在中等坡度负重行走期间，登山杖的重量和使用并不会增加能量消耗，但可能会减轻身体用力的感觉。
