Finding The Sweet Spot

"These sudden joys have sudden endings. They burn up in victory like fire and gunpowder. . . . Too fast is as bad as too slow."
--"Romeo and Juliet," Act 2, Scene 6 (William Shakespeare, ca. 1597), in modern English.

My loving wife often warns me about what she calls "hobby-horses." She knows I tend to be fixated to the verge of obsession on certain topics. When I served as RRCA state rep for North Florida, headphone use was my "hobby horse." I've had other "hobby horses," too, but the headphone thing was most-notable.

I've talked a lot about treadmill running with people who hate treadmills. Some of them are folks who say TMs are no good for training, others don't like the boredom factor. Since late November, I've done every weekday run, including speed workouts, on a treadmill. True, the TM can be breathtakingly boring, but they let me control many training variables. I can adjust one variable at a time and see how my body reacts, or I can end the workout the instant my tendons are in distress.

The initial 35-minute runs are now 60-minute runs, averaging eight minutes per mile. The good news is I'm near the training volume where I was when I was running six days a week and racing once every three months. But the ache in my back and hips is not so good.

It's not the shoes - the oldest of my three pairs has somewhere between 260-270 miles on them, with the newest pair less than thirty. Could it be the treadmill? The "Gait Guys" wrote an article for Triathlete magazine; they warned readers about how a treadmill can adversely affect a runners' gait.

After reading the research by University of Virginia physical therapist Jeff Dicharry, I called the overwhelming majority of the "Gait Guys" article bupkis. Except for that "downhill" thing.

Like a road or trail surface, the feel and comfort of a treadmill varies by manufacturer, model, and even the machine's installation. Ed W. sees treadmills and elliptical trainers as warm-up, not the workout itself...that means run/tri guys like me are not his gym's typical customers. The treadmills in his cardio area are on solid rubber flooring, and thick rubber matting supports his lobby area TMs. There might be a slight slope in the lobby naturally; all the lobby treadmills seem to have this feeling like one is running slightly downhill.

The "Gait Guys" say the downhill sensation is caused by the "pull" of the belt on the runner's lower extremity, in contrast to the "push" of the lower extremity on the ground surface. They say it affects the gait; Dicharry has proven whatever variations exist (in 40 percent of runners) are so miniscule that to tell the difference it requires equipment which exists in only two sports labs in the country.

So, runners who sense that "downhill" feeling on the TM may benefit from an elevation tweak of 0.5-to-1.0 percent. I've tried both; for me a 0.5-percent adjustment is enough to take away that sensation.

The cause of the hip ache is simple - spin class on the "off" days. The exercise bicycle in the gym cannot be adjusted as readily as a "real" bike, or like a "spinning" bike. Different movement patterns cause musculoskeletal aches and soreness.

Any runner who has ever tried to run a pace that is too slow for their comfort has probably found out too late the error of their ways. I like to tell the tale of running with Suzanne at Honolulu's Ala Moana Park in January 2008; a solid minute-to-two-minutes-per-mile decrease in pace left me hobbling after the third day. A pace that is much slower than a runner's intrinsic efficiency forces major gait adjustment, either in stride length or stride duration. A shorter stride length is not biomechanically injurious; a longer stride duration means a longer period of compression time for the large muscle groups and joints. Drive with your shock absorbers compressed beyond their normal range for an extended period of time is most likely going to shorten their lifespan.

So, perhaps it's possible not only for a runner to go at a pace that is too fast - leading to fatigue, overstriding, a compensated gait pattern, and heel-striking - but also too slow on a treadmill.

How can a runner determine what are good training paces for treadmill runs, without going into a lot of trial and error? There are a couple of really good on-line calculators developed by some of the nations' best running coaches (e.g., McMillan, Daniels) which provide optimal pace ranges for easy runs, recovery jogs, and speed work of varying degrees.

I used my Daniels VDOT training pace for easy/long runs as the starting point for treadmill runs. After a time it appears the easy/long run pace is too slow. So, I will probably start at the "marathon pace," a little closer to 7:30/mile, and adjust downward until I find the least uncomfortable pace which doesn't feel too slow.

That's why the later editions of Running Formula, and McMillan's calculator, have pace ranges, because there will always be a sweet spot at each of the intensities which feel best for the individual runner. While running too fast on the treadmill can injure a runner, too fast is no more injurious than running too slow.

Twenty Minutes To (More) Speed - Tempo Runs

Everyone has seen this runner: They toe the line at the local 5,000-meter race, go out at 6:30 pace for the first mile, subsequently slowing down to 7:30 pace on the third one. When you approach their gasping form as they hang onto a signpost, they tell you, 'I could have raced this one, but this was only a tempo run.'

Oh? Really?

When I coached weekly workouts it was my "job" to provide training which worked as many energy systems as possible.

(ED. COMMENT: My coach reminded me we used to do tempo runs as part of the group's training, for which he is correct...a few things changed some over the course of a few years...sometimes change does not always move toward the more beneficial.)

One day a week we did a lot of aerobic-to-threshold-pace stuff at a short (one-to-two-minute) duration. The second workout of the week consisted of efforts lasting anywhere from two-to-five minutes. Several members of the training group liked the longer repeats a great deal. But it was difficult to encourage tempo running as a solo workout outside of training sessions.

I didn't run regular tempo workouts, either. Yes, there were the occasional "anti-social" Wednesday evening beach runs, where I'd go out at a low-seven-minute pace for as long as my lungs could stand, then push a little harder for the last three miles. But it wasn't until I became treadmill-bound and more-closely focused on my own training I started to look a little more closely at the tempo run.

Most recreational runners don't like tempo running; I'm not certain if it is because they don't know what pace to run, they think tempo runs are too painful, or they'd much rather socialize during their runs. But I can tell you they're missing out on some free speed at a low (time) cost-to-(speed) benefit ratio.

First, let's look at what constitutes a tempo run. Dr. Jack Daniels, in "Running Formula," says that (ideally) twenty (to-thirty) minutes of steady running at threshold pace is a tempo run. That's twenty minutes of steady running at an effort level where our body uses the lactate as fast as it is produced from carbohydrate metabolism during physical exercise.

For example, a person who runs a 21-minute 5,000-meters would - according to Daniels - run tempo runs at about 7:10/mile pace (for those who speak treadmill, that's about 8.4 mph). If you still don't have a copy of "Running Formula," never fear. Take your 5,000-meter race pace per mile and add 25-30 seconds.

Are tempo runs painful? I will say they are no easy, breezy walk in the park. After running my first tempo run in about a year - and my first tempo run on a treadmill - my average heart rate was about five beats higher across the board, and my max heart rate near the end was just shy of 85 percent of maximum. For those runners who prefer to not inflict twenty minutes of "comfortably hard" effort on themselves, Daniels recommends what he calls "cruise intervals" of one-mile or ten-minutes, broken up with 30-to-60-seconds of recovery.

Another challenge of tempo running comes from having the right course. The right circuit or course can make all the difference. If your favorite training stretch - for example, from the hotel where Suzanne and I like to stay to Audubon Park and back - has a lot of intersections and traffic, it's easier for me to run "cruise intervals." A good, lightly-trafficked and distance-marked loop or bike path, like the 4.25-mile or 5.8-mile loops on Pensacola Beach, are good for tempo work. Levees and rails-to-trails are also good.

And it doesn't necessarily have to be a solitary affair. Social runners who are at or near the same ability level can work together and ensure the run tempo does not slack off.

Tempo work is probably one of the most under-appreciated, and under-used, workouts which are available to the self-coached runner. The only things necessary for longer-distance speed gains are to know the proper pace, set aside twenty quality minutes, and keep pushing the entire piece.

What's the Frequency, Kenneth? Quantity v. Quality Speedwork

During the "good old days" of speed workouts on the PJC or UWF track, before the rise to coach-dom (coach-dumb?) I gave little or no thought to the ratio or hard efforts to recovery. Well, it wasn't necessarily my job to think about it. That's why I had a coach, right? Over time, as I started to look at stuff like total mileage per workout, relative intensities, and my (decreasing as a result of the aging process) ability to recover from the workout, I began to ask "what is the right ratio of 'fresh,' 'good build-up,' 'good,' and even 'hard' efforts to recovery running?"

Of course, the ratio of each type of effort isn't etched in stone, but dependent on the individual runner's level of fitness - or tendency toward injury, their ability to recover from hard efforts - a function of fitness level, and race focus. Some coaches, like Arthur Lydiard, were all about the base training first, then adding speed. Others feel the other way around is best; work on speed once the initial race fitness is built, a fast short distance runner can become a fast long-distance runner over time. Once again, each runner is an experiment of one. I like the structure of base-building followed over time with a modicum of speedwork.

Still the question presents itself: How much speedwork is a good thing?

I first went back to my books to see what Jack Daniels' had to say. Daniels earlier plans in his first edition of the Running Formula broke things down into four cycles, for which I won't go into detail. If you want to read it I recommend a copy of his book, either in paperback or on e-reader.

I borrowed from his four sets of six-week training cycles to draw up my training for the next six months leading into a half marathon in late May. The first six weeks were mostly easy aerobic-paced runs. Once the second six-week cycle began, I plugged in runs at threshhold (what I used to call "fresh") pace, either as 400-meter, kilometer, or mile repeats with brief recovery periods, or as something Daniels called "cruise intervals," another nice term for tempo runs. Threshhold running, Daniels recommends, should be no more than about ten percent of the training volume. At this point that's only one speed workout a week.

The faster paces Daniels uses to work on VO2max, his "interval" and "repeat" paces, are also only small portions of the total training volume, that of eight percent and five percent, respectively. So, an experienced runner using any of Daniels' training plans would be doing not much more than ten miles a week in speedwork. Three-quarters of the time is spent running at either "easy," "long," or "marathon" pace.

I guess where I'm heading to with this is this:
There's a time and a place for the speed, but it's probably not as much as wethink we need.

The One Book

My wife, Suzanne, received an e-book reader for her most recent birthday. She naturally was pleased to have the new acquisition, graciously offered to let me load books on it, and use it at my convenience.


Ah, but that's the way she is.


She's downloaded a couple of business and marketing books and a few biographies from the Barnes and Noble site. She's able to tuck the reader in her carry-around bag, mark passages she likes, and have hundreds of books - all that information - in one little place.


I, on the other hand, like paper and binding and glue and thread. I am 'old school.' I like the heft of a good history text. It doesn't necessarily mean I'll carry it with me the entire semester but it will stay opened on my work desk until I've taken all the notes I need. It then fills up another bookshelf and makes people think I'm more of an intellectual than I truly am.


There is at least one book, however, I would love to have available everywhere I am but don't want to risk damaging my paperback copy.

If I were forced to buy (again!) only one book (either for downloading to an e-reader, or in paper form) it would have to be Daniels' Running Formula.


Dr. Jack Daniels has been described as "America's Greatest Running Coach." There are great athletes - including several Olympians - who have made a successful transition from athlete to coach. But the list comes few and far between. Not every gifted athlete makes a great coach. Sometimes the smart, physically-limited athlete knows how to tap into the head of their charges. That's what makes a great coach, in my humble opinion.

But where many coach-turned-authors seem to lack bonafides, Daniels brings both personal performance - two Olympic medals as part of the US team in the modern pentathlon (a combination of swimming, equestrian, pistol shooting, fencing and cross-country running), academic credentials - a Ph.D. in exercise physiology, and outcomes - team and individual national championships, and All-American distinctions in cross-country - to the table.


If a self-coached runner is willing to take the time and effort to carefully read through Formula - don't be scared by the mathematical calculations for VDOT at the front end - they can put together a reasonable training plan based on several past race performances, as well as their goal event/s. I like to use the VDOT chart to divide my own training group into smaller ability groups based on a 5K or 10K time. The VDOT chart not only helps to predict performances at other distances (once the other variables are equalized), but provides insight to proper pacing efforts for long runs, threshold runs, and interval workouts. I like to borrow from the pace charts for my "longer repeat" workout day of the week: I might assign an early-to-mid-season workout to a runner with a VDOT score of 38, (a 3:29 marathoner), of 6-to-8 400-meter repeats at "threshold" pace...which is 1:51 for a 400, or a 7:25 mile, with a minute recovery.

Daniels provides plans for runners who are focused on short track racing (800 to 1500 meters), as well as the 5k, 10k, half-marathon and full marathon. Naturally, the plans can be adapted to fit the schedule of the (often) time-constrained runner; don't have enough time to run all those 'easy' paced runs? Schedule the quality training efforts first, then fill in the remainder of the week with the easier efforts.

Regardless of whether you download a copy to an e-reader or you purchase a hard-copy for your library, Daniels' training and racing guidance is probably the next best thing to a coach's advice a runner can have at their fingertips.

Necessity Is The Mother Of Adaptation

Some of the athletes I work with remotely have their own special set of constraints, having much to do with maternity or Mother Nature, both of which are a force stronger than E.F. Hutton. The good news for me when I begin to lay out a training plan for them is they usually have a treadmill for running purposes close by. The only place treadmills are used as a clothes valet, as far as I can tell, is Florida.

The difficult part, however, is how to figure the proper training intensity. I can spend thirty minutes in an e-mail discussing what some call Coach Mike-speak, a variant ot terms used by my former coach, Dale Fox, his coach (1964 Olympic 5,000 meter Gold Medalist) Bob Schul, & his coach, Mihalyi Igloi...which works great when the individual athlete is on the track with me over the course of five or six weeks, because they'll catch the understanding eventually. But when dealing with remote coaching situations I can get a good effort approximation from some other really good coaches; Jack Daniels or Greg McMillan. Daniels' run intensity calculations are easily figured out through a table in the front end of his seminal work, Daniels' Running Formula (which I consider one of the three absolute must have running books), or you can find calculators and reference charts on many different web sites on the Internet (http://www.coacheseducation.com/endur/jack-daniels-nov-00.htm has what I would call Daniels In A Nutshell). I've encountered a fantastic spreadsheet you can use (http://www.electricblues.com/html/runpro.html) to determine the training effect of a particular workout, given the heart rate & run duration, but I recommend it for calculation's sake. McMillan also has a web-based chart, located at http://www.mcmillanrunning.com/ which aligns closely to Daniels'. I'm more familiar with Daniels, so I'll use his terminology to talk about run intensities here.

To determine your VDOT score, which Daniels explains is an estimate of a runner's VO2max at velocity, you'll need the results of your races (1,500 meters, mile, 3,000 meters, 2-mile, 5,000 meters, 10,000 meters, 15,000 meters, half-marathon or marathon) from the past year or so; if you have a variety, so much the better. Find your time for the particular race on a Daniels VDOT Values Table, then look at the number under the VDOT column. A list of best performances over more than one race distance will provide a more-accurate calculation; if you race more long events, focus on the findings based on those results and not so much on the shorter races. I'm one to err on the side of a lower VDOT score, personally, as your body can adapt to a training intensity that is a little too low better than it can an intensity which is too high. Once you have a VDOT score, a second table shows the training intensities based on that particular score for distances from 200 meters up to the easy/long run for the week, depending on the intensity level. For example, the athlete I talked about when I wrote about heart rate monitors has a VDOT score of 44 based on her recent 5K racing. She's training for a marathon in November - given the right conditions, a VDOT of 44 equals a 3:32 marathon performance prediction, but that's another story. Based on that performance I recommended she run her easy runs & her weekly long run at a sliver over nine minutes per mile. Her runs to prepare her for the pace she'll need to run in the marathon would be a little over eight minutes per mile, & the pace I recommended for tempo runs on the track is a little slower than a 7:30 mile. Once the runner knows their specific paces, they can use one or more of a few good 60-minute workouts for the treadmill-bound runner. I recommend one long run, one tempo & one repeat workout per week, with easy runs filling the remainder of the time available. If the athlete finds the workouts a little difficult based on perceived exertion or heart rate, we adjust the pace/s downward or extend the recovery period a little:

Progressive Tempo - 30 minutes at Easy/Long pace, increase speed by .1 mph every four minutes until Marathon Pace is reached. (Runners training for half-marathon or shorter races can continue on to Threshold pace.)

Marathon Tempo - 2 miles at Easy/Long pace, increase speed by .1 mph every two minutes until Marathon Pace is reached. (Runners training for half-marathon or shorter races can continue on to Threshold pace.)

Long Repeats (improve lactate threshold) - 2 miles at Easy/Long pace, increase to Threshold pace for up to five minutes, followed by Easy/Long pace (recovery) for up to two minutes.

Medium Repeats (improve velocity at VO2max) - 2 miles at Easy/Long pace, increase to Interval pace for up to three minutes, broken up by Easy/Long pace (recovery) for up to two minutes.

Short Repeats (improve economy and speed) - 2 miles at Easy/Long pace, increase to Rep pace for 30 seconds to one minute, broken up by Easy/Long pace (recovery) for up to two minutes.

How do you know when you're ready to move the intensities higher? Daniels says race performances are the test of when you're ready to move up...under no circumstances does he recommend trying to beat the training intensities for specific efforts.

While many persons will say a treadmill (simulation) workout is not as good as getting out on the road or the track, I consider it an "eighty-percent solution" for those days when the weather conditions are less than optimal or the runner has a limited amount of time available to train.

I've Got You Onto My Skin: Heart Rate Monitors

I've used chest-strap heart rate monitors for probably the better part of six years, & seen the good, the bad & the ugly of them. In spite of it all I consider them one of the tools which should be in every endurance athlete's arsenal, for a number of reasons:

First, heart rate monitors are great for checking the resting heart rate first thing in the morning.

Second, you can use a heart rate monitor to determine whether the recovery period during hard "interval" workout sessions is sufficient...or if it's time to pull the plug on the session before you begin overtraining.

Third, the heart rate monitor can help you ensure your "easy" training days remain just that...easy.Some high-end monitors are capable of calculating the amount of oxygen taken in to restore the body to it's original resting state, the effect of the training on the athlete; some will even recommend the effort level of the next exercise session after a brief analysis of the data. Naturally, many of these calculators are closer to the one size fits many rather than the individual side of the training device continuum.

Even the most simple monitors, which can download data to the athlete's personal computer, need to be calibrated to the individual in order to be most effective.

The most common - and most commonly incorrect - formula to determine maximum heart rate (MHR) is the classic 220-minus age. If a guy like me uses this particular formula, then my maximum heart rate (then used to determine training heart rate levels) should be 220-47, or 173 beats per minute. This would make my "easy" day heart rate (50-60% MHR) somewhere in the range of 86-to-103 beats per minute. High aerobic pace (61-to-80% MHR) would be 104-to-137 beats per minute.

Now, let's place a wrinkle in the equation. This formula was calculated using men. What guidance do I use as a coach when dealing with a female athlete? A recent Northwestern University study gave me a whole new formula to memorize: 206-minus-88%-of-age. So, one of my female athletes recently purchased a heart rate monitor; she can use the Gulati, et. al. calculation to estimate her MHR: 206 - (48 x .88) = 206 - (42.24) = 163.76...OR...164. Her "easy" day training rate would be in the 82-to-98 range; her high aerobic pace would be 99-to-132.

Of course, that also assumes the ability to drop the heart rate down to zero. I'm no Zen Master, so I can guarantee my high-to-low heart rate range is definitely not 173 beats. My daytime resting HR (RHR), sitting in my office without any hassle, is 54...about two beats higher than my (highest) resting rate first thing in the morning (when I'm fit & race ready it's as low as 42). So, for purposes of this post, let's just say my RHR is 50. That gives me a heart rate reserve (HRR) of 123 beats.

Karvonen would say the lowest target heart rate for my "easy" day (50%) should be: (173 -50) x .50 + 50 = (123 x .50) + 50 = 61.5 + 50 = 111.5. So, my highest target heart rate for the "easy" day (60%) is probably around 122. Keeping the heart rate reserve in mind "justifies" that slightly more intense workout on the "easy" day, right? Maybe.
But, in order to really get the most out of a heart rate monitor, the athlete needs to ensure they do a few things:

First, learn their "true" resting heart rate. This might take strapping on the monitor for a couple of mornings in succession. A good way to do this is - if you're like me & have to get up in the middle of the night to "exchange" fluids - put the strap & receiver on. When the alarm goes off, start the monitor. After about four or five mornings you'll have a good idea of the average.

Second, find out their "true" maximum heart rate. There are physicians who will perform a stress test (for a few dollars) if you have nobody available to assist you. Sally Edwards (and a few other coaches) recommends the test be taken on a track, but I'm partial to using a treadmill because the speed can be increased incrementally through the test, & elements which are hard to control on a track can be controlled with a treadmill.

- Start the test with an easy warm-up of at least 5 minutes. The goal during the warm-up is to get the heart beating to 100-120 bpm.
- Without stopping, begin the test by gradually accelerating the speed so the heart rate climbs about 5 bpm every 15 seconds.
- At each 15-second interval, your partner should tell the exercise time, heart rate, and offer encouragement as they gradually increase the speed.
- Within a 2-to-4-minute period, the heart rate should cease to climb even with increased effort and pace.
- When you can no longer accelerate, or you hear your partner repeating the same number you've (probably) reached your maximum HR.
- At that point either you or your partner can call an end to the test.

Third, & most importantly, learn to correlate effort with number. I've learned the hard way that technology fails, & often at the worst possible moment...on race day. Believe it or not, the experienced runner or athlete can figure out, within a few percentage points, just how hard they are working in terms of their maximal heart rate; researchers proved a strong correlation between the Borg (perceived effort) Scale & the percentage of maximum heart rate. So if you're an experienced runner, running at a level of nine on a one-to-ten scale...chances are good you are fairly close, give or take a few points, to ninety percent of maximum heart rate.

Remember - the heart rate monitor, much like the GPS receiver, is a tool. You can place one in the hands of a child & wreck things, or you can place it in the hands of a craftsman & watch beautiful things happen. The right tool, in the right hands, at the right time, for the right purpose.