IES CLAUDIO SÁNCHEZ ALBORNOZ 1st BACHILLERATOSPAIN- 2009/2010___________________________________________________________________

FOR THE COMENIUS PROJECT: HOW HELPFUL HAVE EUROPEAN SCIENTISTS BEEN TO US?

THIS EXPERIENCE WAS CARRIED

OUT IN PHYSICAL EDUCATION

CLASSES WITH STUDENTS IN THE

FIRST COURSE OF BACHILLERATO

IT IS THE PAIN OFTEN FELT 24 TO 72 HOURS AFTER EXERCISING

DOMS IS CAUSED BY THE BREAKDOWN OF MUSCULAR FIBERS

THE TYPE OF MUSCLE CONTRACTION

SEEMS TO BE A KEY FACTOR IN THE

DEVELOPMENT OF DOMS

CONCENTRIC CONTRACTIONS

The muscle elongates while under tension due to an

opposing force being greater than the force generated by

the muscle

ECCENTRICCONTRACTIONS

A muscle successfully shortens during

contraction against a load

ISOMETRICCONTRACTIONS

The muscular force precisely matches the

load, and no movement results

WHICH CONTRACTIONS PRODUCE MOST SEVERE

DOMS?

WE DID IN CLASS TWO DIFFERENT EXERCISES, ONE OF THEM WITH MORE ECCENTRIC CONTRACTIONS THAN THE

OTHER ONE.

LET´S CHECK IT!!

GROUP A:

PRACTISED CONTINOUS

RUNNING

GROUP B:

PERFORMED DEPTH JUMPS

GROUP A: THEY RAN FOR 20 MINUTES AT 70% OF THEIR MAXIMUN

HEART RATE

GROUP B: THEY STOOD ON CHAIR WITH THEIR TOES

CLOSE TO EDGE.

THEY STEPPED OFF A CHAIR AND LANDED

ON BOTH FEET. THEN IMMEDIATELY JUMPED

UP AS HIGH AS POSSIBLE.

10 SETS X 10 REPS

THE ECCENTRIC

CONTRACTION PHASE IS

GREATER THAN IN GROUP A.

ECCENTRIC CONTRACTION

CONCENTRIC CONTRACTION

DEPTH JUMPS

0 - Nothing at all 1 - Very light 2 - Fairly light 3 - Moderate 4 - Some what hard 5 - Hard 6 7 - Very hard 8 9 10 - Very, very hard

RUNNINGDEPTH JUMPS

BORG BORG

Miriam 8 Adrián 5

Sandra 8 Leyla 4

Gonzalo 5 Cristina 5

Jazmín 8 Yaiza V. 5

José M. 8 Lucía M. 4

Carlos 7 María 5

Soraya 8 Sagma 4

Yaiza G. 9 Lucía G. 5MEAN: 8,7Very hard

MEAN: 5,28Hard

PERCEIVED EXERTION WAS GREATER

IN “GROUP A” THAN IN “GROUP B”

BUT, IS IT THE SAME WITH

DOMS?

STUDENTS RUNNING STUDENTS DEPTH JUMPS

Miriam Bandera 3 Leyla Cordero 4

Gonzalo Casares 0 María Domínguez 5

Yaiza Gómez 0 Yaiza Valcárcel 6

Soraya Bandera 1 Lucía González 2

Jazmín Fernanda 2 Lucía Muñiz 4

José M. Murciego 0 Sagma Abdallahi 3

Carlos Fernández 1 Adrián Nevado 3

Sandra Díez 2 Cristina Santos 2

MEAN: 1,28Light pain

MEAN: 4,14Moderate pain

ALTHOUGH THE RUNNING EXERCISE

INVOLVED A GREATER EXERTION, THE

JUMPING EXERCISE PRODUCED A

HIGHER LEVEL OF MUSCLE SORENESS