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  • Title: The Effect of Uphill and Downhill Walking on Joint-Position Sense: A Study on Healthy Knees.
    Author: Bottoni G, Heinrich D, Kofler P, Hasler M, Nachbauer W.
    Journal: J Sport Rehabil; 2015 Nov; 24(4):349-52. PubMed ID: 25365450.
    Abstract:
    CONTEXT: During sport activity, knee proprioception might worsen. This decrease in proprioceptive acuity negatively influences motor control and therefore may increase injury risk. Hiking is a common activity characterized by a higher-intensity-exercise phase during uphill walking and a lower-intensity-exercise phase during downhill walking. Pain and injuries are reported in hiking, especially during the downhill phase. OBJECTIVE: To examine the effect of a hiking-fatigue protocol on joint-position sense. DESIGN: Repeated measures. SETTING: University research laboratory. PARTICIPANTS: 24 nonprofessional sportswomen without knee injuries. MAIN OUTCOME MEASURES: Joint-position sense was tested at the beginning, after 30 min uphill walking, and after 30 min downhill walking on a treadmill (continuous protocol). RESULTS: After downhill walking, joint-position sense was significantly worse than in the test at the beginning (P = .035, α = .05). After uphill walking, no differences were observed in comparison with the test at the beginning (P = .172, α = .05) or the test after downhill walking (P = .165, α = .05). CONCLUSION: Downhill walking causes impairment in knee-joint-position sense. Considering these results, injury-prevention protocols for hiking should focus on maintaining and improving knee proprioception during the descending phase.
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