Accuracy of Pinch Force Sense in Elite Female Adolescent Weightlifters

Objective: Force sense is an aspect of proprioception, which is most commonly assessed by reproducing a percentage of maximal voluntary isometric contraction. Exercise improves other aspects of proprioception such as joint position sense and kinesthesia, but there are contradictory findings regarding the effects of exercise on force sense. The purpose of this study is to assess the effects of long-term weightlifting training on pinch force sense of elite adolescent female athletes. Materials and Methods: Maximum key and tip pinch strength of 25 elite female adolescent weightlifters and 22 sedentary peers were measured. Participants were asked to press the pinchmeter with 50% of their maximal strength 3 times while looking at the scale and try to learn how much force they apply. Participants then tried to reproduce 50% of their maximum key and tip pinch strength without any visual feedback 3 times. Absolute error, constant error, root mean square error and coefficient of variation were calculated and these values were normalized by dividing to the target values. Accuracy was evaluated by absolute error and root mean square error; directionality of errors was evaluated by constant error and the precision was evaluated by coefficient of variation. Results: Weightlifter adolescents had higher key and tip pinch strength values compared to sedentary (p=0.03 and p=0.02, respectively). Normalized absolute error was lower in weightlifters in comparison with sedentary in both key and tip pinch force sense (p

Elit Kadın Adolesan Haltercilerde Parmak Sıkıştırma Kuvvet Duyusunun Keskinliği

Amaç: Kuvvet duyusu, eklem pozisyon duyusu ve kinestezi ile birlikte propriyosepsiyonun bir bileşenidir. Maksimal istemli izometrik kontraksiyonun belli bir yüzdesinin tekrarlanabilme becerisi ile değerlendirilir. Egzersizin, eklem pozisyon duyusu ve kinesteziyi geliştirdiği bilinmesine rağmen kuvvet duyusu üzerindeki etkileri bilinmemektedir. Bu çalışmanın amacı adolesan elit kadın haltercilerin yaptığı egzersizlerin parmak sıkıştırma (pinch) kuvveti duyusu üzerine etkisinin olup olmadığını araştırmaktır. Gereç ve Yöntem: Çalışmaya 25 elit kadın adolesan halterci ve 22 sedanter kadın akranı dahil edildi. Her bir katılımcının maksimum lateral ve iki nokta parmak sıkıştırma kuvveti değerleri pinchmetre kullanılarak ölçüldü. Katılımcılara bu değerin %50'sini oluşturacak şekilde pinchmetreye bakarak 3 kez sıkıştırmaları ve bu kuvveti öğrenmeye çalışmaları istendi. Daha sonra katılımcılardan herhangi bir görsel geribildirim almadan 3 kez daha aynı hedef kuvveti oluşturmaları istendi. Elde edilen ölçümlerden mutlak hata, ortalama hata kareleri kökü, varyasyon katsayısı, sabit hata hesaplandı. Her bir parametre hedef değere oranlanarak normalize edildi. Karşılaştırmalarda normalize değerler kullanıldı. Mutlak hata ve ortalama hata kareleri kökü denemelerin doğruluğunu; varyasyon katsayısı tutarlılığını; sabit hata ise hatanın yönünü değerlendirmek için kullanıldı. Bulgular: Haltercilerin lateral ve iki nokta parmak sıkıştırma kuvveti değerleri sedanterlere kıyasla daha yüksek (sırasıyla p=0.03 and p=0.02), normalize edilmiş mutlak hata değerleri ise daha düşük olarak bulundu (p

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Kaynak Göster

Spor Hekimliği Dergisi
  • ISSN: 1300-0551
  • Yayın Aralığı: Yılda 4 Sayı
  • Başlangıç: 1966

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