What’s Up, Albert & The 300yd Shuttle?

By James Walker, CCS, STM, BioSig, Master Trainer

In this day and age of technology (cell phones, ipods, laptops, aps, internet, google, etc) that makes gathering information very accessible it’s amazing that so much incorrect and ignorant information permeates the airwaves, internet, and newsprint spheres. And this comes from journalist or in this case sports journalists who we used to rely on for accurate information! Especially since correct and reliable information is only a phone call or keystroke away.

There are countless university exercise science professors and sports-performance-strength coaches, all eagerly ready to be interviewed by some famous sports journalist concerning Albert Haynesworth’s struggle in the 300-yard shuttle. Why can’t he pass it or how should he have prepared in order to pass the easy or hard, depending on the commentator, 300 yd-shuttle test. “He needs more cardio”, “why didn’t his trainer prepare him”, “why didn’t he lose weight”, oh yeah he did lose weight, about 35 lb, “so why didn’t he pass”, or “just because he lost weight doesn’t mean he’s in football shape”, right?

I know all of my former professors, strength coaches, and exercise specialist who have mentored me the past 30 years cringe every time they hear, read, or see the responses from all of the media experts.

The 300-yard shuttle run consists of sprinting 25-yards down and back six times touching the line with the foot in order to complete 300 yards total distance. The times may range from 56 seconds for football receivers and defensive backs to 73 seconds for offensive and defensive linemen. After completion the participant rests 3-5 minutes (3 & ½ for the NFL Washington Redskins) then repeats the test a second time. The times can then be averaged or compared to determine the athlete’s fitness level.

The purpose of the 300-yard shuttle run is to test maximal anaerobic-sprint endurance and/or conditioning. In order to attain a reliable score the participant must sprint at maximum effort and not pace themselves. The general testing populations are sports that involve anaerobic-sprint endurance like-.basketball, hockey, rugby, and soccer.

Now I must confess that when I had to take Testing and Measurement and Statistics decades ago I thought I’d never use any of it but I’ve consistently relied on and utilized the information over and over, especially administering performance assessments and analyzing training data.

All test must be valid, reliable, and objective, all interrelated values and that the measurement must measure the component that it supposed to measure; measure the component consistently; and result in similar scores regardless of the administer.

Let’s look at a quick review of those terms valid, reliable, and objective.

Test validity refers to the degree to which the test measures a specific component that it is intended to measure. The test should contain tasks that reflect those specific components to be measured or it’s content validity.

Test reliability refers to the degree to which the test yields consistent and stable scores over repeated trials and time. Reliability depends upon how strict the test is conducted and how motivated the participant is to perform the test.

Test objectivity refers to the degree to which the test can be measured repeatedly and reliably by various testers with minimum subjectivity.

So in spite of how you may feel about Albert and his conditioning it’s amazing that this test is used to test football players, yet alone a 300 lb lineman. Considering that the average play last between 4-5 seconds, why would you test something that last 50-70 seconds? Does this sound valid, reliable, or objective?

First of all, 4-5 seconds of maximal effort utilize absolute strength, power, and speed, all anaerobic bio-components that involve IIB fast-twitch muscle fibers and alactic-glycolytic energy systems.

Secondly, 56-73 seconds of maximal effort (actually slightly sub-maximal) utilize strength and speed endurance that involves IIA fast-twitch muscle fibers and lactic-glycolytic energy systems. The two are very different in their respective functions and actions.

Thirdly, there is another sub-maximal speed endurance IIA fiber that utilizes a glycolytic-oxidative energy system.

Fourthly, none of these are aerobic which starts to kick in after several minutes of continuous sub-maximal effort that involve slow–twitch IA muscle fibers and primarily an oxidative energy system.

In the exercise science community it really doesn’t make since. So when these experts see test such as the 300-yard shuttle or parts of the NFL combine test they cringe, shake their heads, and wonder if any of them ever picks up an exercise science journal or text.

In summary the test is not a very good indicator of anaerobic alactic power required for football. It does not make sense to any knowledgeable exercise scientist. A better test for football conditioning would involve maximal efforts of 4-5 second that are repeated numerous times with 15-30 seconds of recovery to simulate the huddle. Watch the game, doesn’t that make more since?           

‘Train Safe, Smart, & Results Driven’

Training Principles, Part Seven - Basic Sprint Mechanics

By James Walker CCS, STM, BioSig, Master Trainer

 If you’re not blessed to have a biomechanics coach or fortunate enough to work with a competent sprint coach, no one explains or teaches you correct sprint mechanics. Even having a speed & conditioning coach you may not receive the technical or biomechanical information necessary to improve sprinting. Instead you may get an over indulgence of volume running or gimmick training. I’m not suggesting that some devices can’t enhance your speed but they should be a supplement to proper mechanics, structural integrity, muscle fiber recruitment, and overall strength. Here are the basics of sprinting.

1. Sprint Running Mechanics – to run at a fast pace that requires a high or intense neuromuscular effort. The basics of sprinting can be summed up into three phases - start phase, drive phase, and acceleration phase.

a) Start Phase - may be from a two, three, or four point stance, requiring strength and power to over come inertia. Below is a checklist of proper mechanics:

·      Head position-should be down with chin near the collar and neck relaxed.

·      Torso position-(two & three point stances) should be achieved with the hips being higher than the head or hips raised with the shoulders slightly forward of the hands.

·      Arm & hand position-finger tips or hands should be on the line (in a four point stance) or the opposite side hand to the front foot (in a three point stance) with the other arm extended back slightly higher than the hips.

·      Leg & feet position-should be determined by the feet position close (bunched), medium, or elongated. The front foot should be approximately one foots length from the start line with a 90 degree knee angle, while the back foot should be positioned to allow a 120 degree knee angle (this is also the stronger and/or more coordinated leg. Both heels are raised with the front bearing the most weight.

b) Drive Phase - coming out of the start to over come inertia from the stationary position or stance to achieve a 45-degree body lean angle.

·      Head position-should be looking down at the ground but relaxed (the head position dictates the body or torso position).

·      Torso position-should be 45 degree lean angle.

·      Arm & hand position-should be relaxed with a 90 degree angle at the elbow and strong powerful alternating elbow drive to the rear on the backswing.

·      Leg & feet position-feet should be dorsiflexed (toes and ankles pulled up toward the shins) with the ball of the foot (forefoot) striking the ground behind the hips. The legs should drive down toward the ground in a powerful motion (like auto pistons or punching the heavy bag) after the heel is pulled up into the hamstring area (this actually precedes the leg drive). Tighter knee angle and knee lift equals greater striking force. The first few foot strike are critical, they must be powerful and explosive (importance of leg, hip, back, & core strength).

c) Acceleration Phase - post drive phase to reach the maximum running speedwith a 70 degree body lean angle.

·      Head position-should be neutral with the chin level to the ground but relaxed (the head position dictates the body or torso position).

·      Torso position-should be 70 degree lean angle.

·      Arm & hand position-should be relaxed with a 90 degree angle at the elbow and strong powerful alternating elbow drive to the rear on the backswing. The hand or fist should automatically return into the front-swing but only to shoulder level.

·      Leg & feet position-feet should be dorsiflexed (toes and ankles pulled up toward the shins) with the ball of the foot (forefoot) striking the ground under the hips. The legs should drive down toward the ground in a powerful drive motion (focus on striking the ground under the hips) after the heel is pulled up into the hamstring area, which facilitates knee lift or a tight knee angle (this actually precedes the leg drive). Tighter knee angle and knee lift equals greater striking force.

‘Train Safe, Smart, & Results Driven’

Training Principles, Four - Principles Of Exercise Science Con’t

By James Walker CCS, STM, BioSig, Master Trainer

Training principles of exercise science con’t…

10. Overload and Progressive Loading – neuromuscular adaptation occurs as a result of progressive amounts of overload or in other words your body adapts to progressive small amounts of stress (fictitious Greek wrestler Milo carrying the calf until it’s a full grown bull).

·      This adaptation is optimal when the progression of stress or overload is gradual and in small increments of 1-5% of the working intensity level (also called the Kaizen Principle of constant and never ending improvement by increasing in small increments over a long period of time).

11. Over Training - is caused by constant training that does not allow adequate time for recovery, regeneration, or super compensation to occur.

·      Symptoms may include irritability, increase in injury, healing time, resting heart rate, normal blood pressure, illness, change in mood and appetite, decrease in immune system and performance.

·      In addition to excessive inflammation, scar tissue formation, over compensation of other body parts, soft tissue strain and tear, bone fractures, and a weakened level of strength and conditioning.

·      Example-scar tissue, traps or hamstring or calve, get volunteer

12. Periodization or Periodized Training - is a pre-planed training plan, which consists of short or long-term cycles (days vs. weeks vs. months), with changes in the workout at regular intervals.

·      By manipulating your training variables, such as variations in exercises, reps, sets, and weight load intensities you will maximize your progress and motivation, and help to prevent plateaus, injuries, and over-training.

13. Posture, Stability, and Synergist Muscles – are muscles that assist the primary (larger) muscles by helping to hold a position to achieve the desired action. This help is called synergist.

·      e.g., when sprinting the ankle dorsi- flexor muscles and the toe extensor muscles put the foot in the correct position prior to the foot strike.

·      The synergist may also assist in achieving a particular action.

·      e.g; in elbow flexion the arm biceps may get assistance from the forearm brachioradialis muscle.

·      Often these muscles are the smaller muscles and/or the secondary actions of neighboring muscles.

14. Reflex Inhibition –when a muscle is injured by repetitive use, trauma, faulty motor patterns, imbalances, or scar tissue, the central nervous system shuts down the neural drive to the muscle (turns off the muscle) to protect it from further injury.

15. Rep and Set variation – rep and set ranges should be varied for each training cycle (2-4 weeks for advance trainees, 5-8 weeks for experienced trainees, 9-12 weeks for intermediate trainees, and 13-16 weeks for beginners).

·      This will allow total muscle and strength development and will reduce overuse syndromes.

·      For example a muscle hypertrophy workout cycle: cycle One - 6 reps x 6 sets; cycle Two - 12 reps x 3 sets; cycle Three - 8 reps x 5 sets; and cycle Four - 10 reps x 4 sets.

·      For example relative strength or power workout cycle: cycle One - 5 reps x 5 sets; cycle Two - 2 reps x 8 sets; cycle Three - 4 reps x 6 sets; and cycle Four - 1 reps x 10 sets.

·      The rep ranges should be based on your objectives, whether for relative strength and power or for hypertrophy strength or for muscle endurance, whichever need is the priority.

·      The set ranges will help determine and influence the conditioning of the muscle fibers trained.

 ‘Train Safe, Smart, & Results Driven’