Calf Muscle Oxygenation During Treadmill Walking in People with Knee Osteoarthritis

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  • 変形性膝関節症患者における歩行時の下腿部の酸素動態の特性
  • ヘンケイセイ シツカンセツショウ カンジャ ニ オケル ホコウジ ノ カタイブ ノ サンソ ドウタイ ノ トクセイ

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Abstract

[Purpose] In order to establish a useful rehabilitation program for knee osteoarthritis (OA) patients, we tried to measure calf muscle oxygenation at various walking speeds. [Methods] The subjects were 7 older females with knee OA (OA group) and 7 older females who were not suffering from OA (non-OA group). All subjects performed treadmill walking at three different speeds for 2 minutes each with a rest period in between. The walking speeds were: 75% free gait speed (75%FGS), free gait speed (100%FGS), and 125% free gait speed (125%FGS). We measured muscle oxygenation {blood volume (BV) and oxygenated hemoglobin (oxy-Hb)} at the medial head of the gastrocnemius muscle (GM) and the tibialis anterior muscle (TA) using near-infrared spectroscopy (NIRS). The differences of BV and oxy-Hb (Δ) were calculated from the mean value ten seconds before the start of walking and the mean value ten seconds after the end of walking for each condition. [Results] In the OA group both BV and oxy-Hb of GM and TA showed no significant differences among the conditions. In the non-OA group, however, the oxy-Hb of TA showed significant differences between the 75%FGS and 125%FGS conditions. [Conclusion] The different muscle oxygen patterns of the OA and non-OA groups might be explained by differences in the calf muscle pumping action during gait. <br>

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 29 (3), 329-334, 2014

    The Society of Physical Therapy Science

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