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Muscular Strength And Endurance Lab Report

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Muscular Strength, Endurance, and Power
Naphong Aneksirikul
CSU Long Beach
Muscular Strength, Endurance, and Power
Introduction: Muscles are used on a daily basis so understanding the importance of evaluating the different components of muscular fitness is crucial to our own understanding of our body. The components of muscular fitness include muscular strength, muscular endurance, power output, and isometric (static) contraction. Muscular strength is the ability of the muscle to exert force against resistance. Muscular endurance is the ability of the muscles to sustain and maintain force for a certain amount of time. Both muscular strength and endurance are important in determining which physical activities are the most suited for certain …show more content…

With arms to the side, the subject will squeeze the handgrip dynamometer with maximum exertion and try to maintain the grip for about 4 more seconds. The subject will repeat the measurement 3 times with each hand with 30 seconds of rest between each trials to determine the maximum handgrip strength.
2. For each hand, the subject will squeeze the dynamometer at 50% of the maximal value for as long as possible to determine the isometric endurance.
Experiment 2: Power Output determined by Vertical Jump
1. Subjects will determine the vertical jump height by subtracting the height of standing reach from the jump reach. Subjects will use a squat jump with feet at shoulder width apart to jump as high as possible and touch the Vertec. Three trials will be …show more content…

50% of Maximum Handgrip Strength: 3. Isometric Endurance Time:
Left Hand = 47.5 lbs / 21.6 kg Left Hand = 24 seconds
Right Hand = 50 lbs / 22.8 kg Right Hand = 9 seconds

Experiment #2: Vertical Jump Power
1. Standing Reach: 88 in / 223.5 cm Trial 1 Trial 2 Trial 3
Jump Reach (in/cm) 108 / 274.3 111 / 281.9 112.5 / 285.8
Vertical Jump (in/cm) 20 / 50.8 23 / 58.42 24.5 / 62.2

Vertical Jump Height Percentile Rank: 80 %
(Use the highest Jump Reach in the calculation of Vertical Jump Peak Power) (1 inch = 2.54 cm)
Peak Power (watts) = [(60.7) x VJ Height (cm)] + [45.3 x body mass (kg)] – 2055 = 4869 watts
Experiment #3: Wingate Anaerobic test on a cycle ergometer (Monark)
Leg force setting = 69.5 x .09 = 6.255 kg x 9.8067 = 61.3 N Body Mass (kg) % BM

Interval: 0-5 5-10 10-15 15-20 20-25 25-30 RevMax RevTotal
Pedal Revolutions: 10 10 7 77 5 5 10 44

Peak Power = 61.3 x 10 x 6m = 736 W Relative Peak = 736 ÷ 69.5 = 10.6 Watts/kg F(N) RevMax 5s Peak BM (kg)
Total Work = 61.3 x 44 x 6m = 16183 J Relative Work = 16183 ÷ 69.5 = 232.9 J/kg F(N) RevTotal Work (J) BM (kg)
Mean Power = 61.3 x 44 x 6m = 539 W Relative Mean = 539 ÷ 69.5 = 7.76 Watts/kg F(N) RevTotal 30s Mean BM

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