Bee­nie Man to vibes up Guardian 5K party

Jamaica Gleaner - - SPORTS -

Pres­i­dent of Guardian Life Lim­ited, Eric Hosin, greets en­ter­tainer Moses ‘Bee­nie Man’ Davis dur­ing the launch of the ‘Keep It Alive’ 5K Night Runs. THE THIRD stag­ing of the Guardian Group Foun­da­tion ‘Keep It Alive’ 5K Night Runs, sched­uled for Satur­day, Novem­ber 5 in Kingston and Satur­day, Novem­ber 12 in Mon­tego Bay, prom­ises to be more mem­o­rable than in years past.

Though the foun­da­tion’s main ob­jec­tive of host­ing the 5K events is to give back to the health sec­tor by way of pur­chas­ing much-needed med­i­cal equip­ment for four of the is­land’s hos­pi­tals – Univer­sity Hospi­tal of the West Indies, Corn­wall Re­gional Hospi­tal, St Ann’s Bay Hospi­tal and Man­dev­ille Re­gional Hospi­tal – the foun­da­tion also recog­nises that the over­all par­tic­i­pants’ ex­pe­ri­ence is crit­i­cal in en­sur­ing they gain sup­port in the years to come.

This year, the fea­tured af­ter­race lyme, which is open only to reg­is­trants, will have in­ter­na­tional dance­hall star Moses ‘Bee­nie Man’ Davis as the main en­ter­tainer at both events. So for only $1200 (in­di­vid­ual reg­is­tra­tion), par­tic­i­pants will not only be con­tribut­ing to a worth­while cause, but will also be thor­oughly en­ter­tained.

So, grab your friends, fam­ily, col­leagues and team up, lace up and warm up as you get ready to run, walk or wheel in sup­port of our hos­pi­tals.

Visit the race web­site at www.keep­i­tal­ive5k.com for more de­tails. SUC­CESS­FUL SPORT­ING ac­tion de­pends on our mus­cles work­ing to­gether to pro­duce skil­ful move­ment. The mus­cles used de­pend on the ac­tiv­ity or the phases of ac­tiv­ity.

Mus­cles work by short­en­ing or con­tract­ing. The mus­cles that move your bones when an ac­tiv­ity is per­formed are the vol­un­tary mus­cles. A vol­un­tary mus­cle usu­ally works across a joint. It is at­tached to both bones by ten­dons. The fi­bres of the ten­dons are em­bed­ded in the pe­rios­teum of the bone. This an­chors the ten­don and spreads the force of con­trac­tion.

All mus­cles con­tract and de­velop ten­sion. They work in pairs or groups be­cause a mus­cle can only pull, it can’t push. For ex­am­ple, the bi­ceps and tri­ceps work to­gether. To bend the arm the bi­ceps con­tracts, the tri­ceps re­laxes. To straighten it, the tri­ceps con­tracts, the bi­cep re­laxes. This is called an­tag­o­nis­tic mus­cle ac­tion.

The other main pair of mus­cles that work to­gether are the quadri­ceps and ham­strings. The mus­cle that con­tract or shorten is called the prime mover or ag­o­nist. The re­lax­ing mus­cle is the an­tag­o­nist. There are other mus­cles, called syn­er­gists, that con­tract at the same time as the ag­o­nist to help it work smoothly.

ORI­GIN AND IN­SER­TION

The ori­gin of a mus­cle is where the mus­cle joins the sta­tion­ary bone. The in­ser­tion is where it joins the mov­ing bone. When a mus­cle con­tracts, the in­ser­tion moves to­wards the ori­gin. Mus­cle and their main ac­tions: 1. Del­toids (three mus­cles) – Raises your arm for­ward, back­wards and side­ways at the shoul­der.

2. Bi­ceps – Bends your arm at the el­bow.

3. Ab­dom­i­nals (four mus­cles) – Pulls in the ab­domen. Flexes the spine so you can bend for­ward.

4. Quadri­ceps (four mus­cles) – Straight­ens the leg at the knee. Keeps it straight when you stand.

5. Pec­torals (two mus­cles) – Raises your arm at the shoul­der. Draws it across your chest.

6. Latis­simus dorsi (lats) – Pulls your arm down at the The mus­cu­lar sys­tem

shoul­der. Draws it be­hind your back.

7. Trapez­ius – Holds and ro­tates your shoul­ders. Moves your head back and side­ways.

8. Tri­ceps – Straight­ens your arm at the el­bow joint.

9. Gluteals (three mus­cles) – Pulls your leg back at the hip. Raises it side­ways at the hip. Glu­teus maximus is the big­gest of these mus­cles.

10. Ham­strings (three mus­cles) – Bends your leg at the knee.

11. Gas­troc­ne­mius – Straight­ens the an­kle joint so you can stand on your tip toes.

TYPES OF MUS­CLE AC­TION

The type of re­sis­tance the mus­cle meets de­ter­mines the type of mus­cle ac­tion. There are two types of mus­cle ac­tion: 1. Con­cen­tric 2. Ec­cen­tric

These are the most com­mon types of con­trac­tion. The mus­cle ac­tu­ally short­ens in length as it de­vel­ops ten­sion. There are two ways in which this hap­pens.

Iso­tonic ac­tion – the mus­cle short­ens or con­tracts freely.

IE.g., the bi­ceps con­tract when curl­ing a weight.

Iso­met­ric ac­tion – the mus­cle short­ens or con­tracts only a lit­tle be­fore it is stopped from con­tract­ing fur­ther by an im­mov­able re­sis­tance. E.g., try­ing to lift a weight you can­not move.

IECCENTRIC MUS­CLE AC­TION

This oc­curs when the mus­cle is try­ing to con­tract while it is ac­tu­ally be­ing length­ened by stretch­ing. E.g., the quadri­ceps mus­cles at the front of the thigh when go­ing down­hill.

TYPES OF MUS­CLES

There are three types of mus­cles in the body: vol­un­tary, in­vol­un­tary and car­diac.

Vol­un­tary mus­cles are at­tached to bones, they work when you want them to. Vol­un­tary mus­cles are also called skele­tal mus­cles or striped mus­cles.

In­vol­un­tary mus­cles are found in the walls of the in­ter­nal or­gans: stom­ach, gut, blad­der and blood ves­sels. It works on its own. Con­trac­tions in the walls of the blood ves­sels helps to keep blood flow­ing.

Car­diac mus­cle is a spe­cial in­vol­un­tary mus­cle that forms the wall of the heart. It works with­out stop­ping, each con­trac­tion is a heart­beat.

MUS­CLE FI­BRES

Mus­cles are made up of cells called mus­cle fi­bre. There are two dif­fer­ent types of fi­bres: slow twitch and fast twitch.

Slow-twitch fi­bres con­tract slowly, with­out much force, but do not tire eas­ily and are suited for en­durance ac­tiv­i­ties.

Fast-twitch fi­bres con­tract much faster and with much more force, but tire quickly. They are suited to ac­tiv­i­ties that needs burst of strength and power, such as sprint­ing and weightlift­ing.

MUS­CLE TONE

The state of par­tial con­trac­tion of mus­cles is called mus­cle tone. Groups of fi­bres take turns to con­tract so mus­cles don’t get too tired. Even when you are stand­ing still, mus­cles are par­tially con­tracted. Mus­cle tone is im­por­tant in main­tain­ing the pos­ture of the body and keeps the body ready for ac­tion.

CON­TRIB­UTED PHOTO

CON­CEN­TRIC MUS­CLE AC­TION

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