順天堂医学 Activity Profiles of International Goalball Players Using Wearable Devices

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Abstract

<p><b><i>Objective: </i></b>To examine the activity profiles of international goalball players and individual player profiles using wearable devices. </p><p><b><i>Materials: </i></b>All participants were Japanese national goalball players. Nine players were male (age: 24.7±5.9 years, height: 169.1±0.06 cm, weight: 73.1±10.0 kg) and 5 were female (age: 20.8 ±7.1 years, height: 158.2±0.06 cm, weight: 55.6±7.2 kg). </p><p><b><i>Methods: </i></b>Measured items were PlayerLoad<sup>TM</sup>, acceleration, deceleration, change of direction, and heart rate responses. Inertial measurement units (IMU) and heart rate sensors were embedded in the wearable device used by participants. Each player's highest PlayerLoad<sup>TM</sup> value in a 10-sequence interval was referred to as the "peak value", and the average 10-sequence interval value after the peak was expressed as "post value". Percentage of HRmax (%HRmax) observed in one playing time was also assessed.</p><p><b><i>Results: </i></b>In male players, an approximately 50% decline in the mean PlayerLoad<sup>TM</sup> value was observed (from peak to post). The same tendency was observed in the female players, although the amount of decline was not that high. In male players, 80%-90% HRmax was observed in approximately 60% of a game, whereas that of female players was 30%. Furthermore, in female players, 70%-80% HRmax was observed in approximately 50% of a game, whereas that of male players was 30%. </p><p><b><i>Conclusions: </i></b>The results provide scientific evidence for constructing a useful measurement tool when planning trainings for goalball players to improve their competitiveness.</p>

Journal

  • Juntendo Medical Journal

    Juntendo Medical Journal 65(3), 279-285, 2019

    The Juntendo Medical Society

Codes

  • NII Article ID (NAID)
    130007689514
  • NII NACSIS-CAT ID (NCID)
    AA1262207X
  • Text Lang
    ENG
  • Journal Type
    大学紀要
  • ISSN
    2187-9737
  • NDL Article ID
    029964186
  • NDL Call No.
    Z19-432
  • Data Source
    NDL  J-STAGE 
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