Friday, March 07, 2008

Merejam Lembing

Sejarah

Rejam lembing (javelin) adalah acara olahraga yang tertua dan dipercayai dimainkan sejak zaman purba lagi. Ketika itu lembing digunakan untuk memburu dan sebagai senjata dalam peperangan. Acara merejam lembing mula di pertandingkan dalam Sukan Olimpik Moden pada tahun 1912. Sejak itu, acara merejam lembing merupakan satu acara balingan dalam semua acara sukan dunia. Acara ini juga dipertandingkan di peringkat negeri, daerah atau sekolah.

Prinsip asas merejam lembing

Merejam lembing berbeza daripada aktiviti membaling yang lain seperti melontar peluru dan melempar cakera. Ini kerana terdapat perbezaan di antara bentuk alatan yang digunakan dan juga kawasan untuk bergerak bagi ketiga-tiga acara sukan itu. Dalam acara merejam lembing, pelatih menggunakan aksi membaling yang lebih kurang sama dengan tindakan membaling sebiji batu atau bola tenis.

Selain itu, pelatih hendaklah mempelajari teknik menggunakan keseluruhan badan mereka untuk menghasilkan tindakan yang berkesan semasa merejam lembing. Latihan ansur maju hendaklah dimulakan dengan mengajar para pelatih tentang cara memegang lembing, berlari dengan lembing, merejam dengan cara berdiri dan seterusnya sehingga mereka dapat berlari sambil merejam lembing. Butiran seperti pentingnya meleding badan sebelum merejam, langkah larian yang licin, keadaan tangan yang lurus semasa membawa lembing dan tindakan tumit untuk membantu pergerakan badan adalah perlu kepada para pelatih.

Keselamatan para pelatih

Semasa membawa lembing

  • Mata lembing biarlah menghadap ke bawah
  • Jangan berlari

Semasa latihan

  • Pastikan tidak ada orang di kawasan merejam
  • Perhatikan pergerakan orang lain di sekitar kawasan
  • Para pelatih lain yang masih menunggu giliran mereka mestilah berada di kawasan yang telah ditetapkan oleh jurulatih
  • Amalkan dasar semua memungut lembing setelah semua merejam
  • Susunan dan organisasi kelas hendaklah diatur rapi bagi membolehkan penyertaan setiap pelajar secara maksimum

BAHAGIAN – BAHAGIAN LEMBING

Lembing biasanya diperbuat daripada besi atau logam campuran. Bahagian-bahagian lembing terdiri daripada kepala, grip dan ekor. Terdapat dua jenis gaya rejaman yang boleh digunakan oleh perejam lembing. Kedua-dua gaya ini sering digunakan oleh perejam-perejam amatur mahupun professional. Gaya rejaman tersebut ialah Gaya Rejaman Dari Atas Bahu dan Gaya Rejaman Dari Bawah Bahu.


Gaya memegang lembing

Terdapat tiga teknik asas memegang lembing iaitu;

Gaya Amerika

Lembing dipegang di antara ibu jari dan jari telunjuk serta disokong oleh tiga jari yang lain.

Gaya Finnish

Lembing dipegang di antara ibu jari dan jari tengah.

Gaya Pegangan – U

Lembing dipegang di antara jari telunjuk dan jari tengah.


Kawasan rejaman lembing

Kawasan rejaman hendaklah bebas daripada sebarang gangguan atau halangan serta tidak membahayakan keselamatan orang ramai. Panjang kawasan larian tidak melebihi 36.5 m dan lebar 4 m, manakala kawasan rejaman yang dilebarkan pada sudut 29 – 30 darjah mempunyai jarak 8 m dari pusat lengkungan ke titik sudut. Panjang kawasan ini tidak mempunyai had asalkan bersesuaian dengan taraf atau prestasi peserta.

Teknik rejaman lembing

Terdiri daripada empat fasa utama seperti berikut:

Fasa persediaan

Fasa lari landas

Fasa rejaman

Fasa ikut lajak

1. Fasa persediaan

Fasa ini memberi fokus kpada persediaan fizikal seperti teknik memegang dan menentukan kedudukan lembing serta persediaan mental. Perkara yang perlu diberi perhatian ialah:

  • Berdiri dengan keadaan postur badan yang tegak dan seles
  • Pegang lembing mengikut gaya pegangan yang dipilih dengan kemas dan selesa
  • Lembing berada pada aras kepala dalam keadaan bersudut 40 darjah
  • Bahagian kepala lembing hendaklah menghala ke arah kawasan rejaman
  • Pandang kearah kawasan rejaman

2. Fasa lari landas

Fasa ini bertujuan untuk mewujudkan kelajuan yang maksimum dan dalam keadaan terkawal. Perkara yang perlu diberi perhatian ialah:

  • Mulakan larian sambil memegang lembing pada aras kepala
  • Tingkatkan kelajuan mewujudkan daya pecut secara terkawal
  • Langkah terakhir lebih besar daripada langkah – langkah sebelumnya
  • Tumit kaki hadapan menekan kuat ke tanah semasa memberhentikan larian supaya kuasa larian dipindahkan ke lembing sebelum memasuki fasa rejaman
3. Fasa rejaman

Fasa rejaman memerlukan pemindahan kuasa kaki ke lembing untuk memberi kelajuan yang maksimum pada rejaman. Perkara yang perlu diberi perhatian ialah:
  • Dalam keadaan tumit kaki hadapan menekan ke tanah, kilaskan badan ke sisi
  • Kilaskan badan ke sisi dan belakang dengan menggunakan tangan bebas dan kuasa rotasi pinggang
  • Tolak lembing ke belakang dan tarik ke atas dan ke hadapan untuk melancarkan lembing
  • Perlakuan ini memerlukan rotasi di pinggang dan lentikan di belakang untuk menambahkan kuasa rejaman
4. Fasa ikut lajak

Penyerapan daya dan stabilkan pergerakan selepas merejam adalah penting. Perkara yang perlu diberi perhatian ialah:
  • Sebaik sahaja lembing dilepaskan, langkah setapak ke hadapan dan mendarat dengan sebelah kaki
  • Imbangkan badan dengan kaki yang sebelah lagi
  • Rendahkan badan bagi mengimbang dan menstabilkan kedudukan badan
  • Kawal pergerakan supaya tidak melepasi garisan lengkungan bulatan

21 comments:

Anonymous said...

thx so much

Anonymous said...

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Anonymous said...

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IPRM Mohd Hilmi said...

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Anonymous said...

tq wafi...info ni bergune utk asgmnt sye!

Anonymous said...

mintak copy ea

zhihwe said...

can you tell me who r the pemain terkenal in rejam lembing ???

diela_deylaz said...

thanks a lot

Anonymous said...

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PANITIAPJPKSMKJ18 said...

TQVM FOR THE PHOTO (GRIP)

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