Treadmill is a highly popular fitness equipments. One of the most important purposes of running is to consume redundant energy of the body. A well designed exercise intensity plan can achieve the benefits of exercise while avoiding sport injuries. Calculating the appropriate exercise intensity is therefore a valuable study issue. Current commercially available treadmills cannot provide sufficient physiological data. In particular, in order to measure the ground reaction force (GRF) of the runners, traditional approach is to design treadmill as a rigid body. Such treadmills are thus expensive and heavy. To estimate heart rate (HR), ECG measurement is typically required. However, sweat can cause the patch to loose and the quality of the signal transmission can also be degraded by environmental noises. Thus the aim of this work is to develop a simple and effective method to assess exercise intensity by estimating HR with GRF.. To achieve this goal, this work places load cells under the legs of the treadmill. By constructing the dynamic model of the treadmill via system identification technique, we can estimate the actual GRF from the measurements of the load cells. After computing the TVI (Total Vertical Impulse) index from the GRF, this work then investigates the linear relationship between TVI and running energy consumption by estimating HR from TVI. Based on the known relationship between HR and exercise intensity, we can observe the runner¡¦s condition from the speed of HR recovery and the HR time response during running. By means of linear regression method, it is found that the linear relations between TVI index and these HR measures are statistically significant. The p-value of such statically tests become even smaller when TVI index is normalized.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0720112-102419 |
| Date | 20 July 2012 |
| Creators | Kuo, Fu-Chang |
| Contributors | Jiann-Der Lee, Chen-Wen Yen, Pei-Chung Chen |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720112-102419 |
| Rights | user_define, Copyright information available at source archive |
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