Physiological responses of healthy adults to walking with a powerbelt

[摘要] The purpose of this study was to provide descriptive data on the physiological responsesto walking at a self-selected pace with and without a Powerbelt. In random order, tenmale (age = 22 + 0.9 yr, ht = 178 4 5.8 cm, wt = 77 + 1 1.1 kg) and ten female (age =24 If: 6.0 yr, ht = 168 f 6.1 cm, wt = 64 + 10.5 kg) volunteers walked at a self-selectedpace for 30 minutes unaided, with the Powerbelt base unit, and with the Powerbelt plusPower Pakl. Variables measured were oxygen consumption (V02) using open circuitspirometry, heart rate (HR), and rating of perceived exertion (WE). When compared tounaided walking, the results showed walking with the Powerbelt base unit yieldedsignificantly higher V@ (1 5.6 f 2.25 vs 19.3 + 2.20 ml. kg-;;. min-;;), HR (1 01 + 8.2 vs117 -L 13.9 bpm), and WE (1 17 4 13.9 vs 10 4 1.4) responses. Walking with thePowerbelt plus Power Pak 1 yielded significantly higher VQ (20.8 -t 2.38 ml- kg-;;.min-;;), HR (125 f 16.0 bpm), and RPE (12 k 1.1) responses when compared to bothunaided walking and walking with the Powerbelt base unit, The average caloricexpenditure walking unaided was 5.4 + 1.22 kcallmin, walking with the Powerbelt was6.7 4 1.43 kcallmin, and walking with Power Pak 1 was 7.2 4 1.41 kcallmin. The resultsof this study indicate that walking with a Powerbelt with only the base unit or with PowerPak 1 provides an increased intensity over unaided walking, which may result inadditional improvements during walking exercise.

[发布机构] University of Wisconsin

[效力级别] Powerbelt

[关键词] Walking - Physiological aspects;Powerbelt