RMI Expeditions Blog
Posted by: Brent Okita, Bryan Mazaika
Categories: Expedition Dispatches Mount Rainier
Elevation: 11,000'


Posted by: Robby Young, Andy Bond
Categories: Expedition Dispatches Mount Rainier
Elevation: 14,410'
Posted by:
Categories: Mountaineering Fitness & Training

One of the keys to performance in endurance events such as distance running, cycling, swimming, or mountaineering, is to be able to put in a hard burst in the middle of your effort and then recover. We see Tour de France cyclists do this all the time, racing a full out sprint in the middle of a stage, then recovering for the final sprint 60 miles later. Runners do it when they make a break up a hill to get away from the field, and mountaineers need to be able to do it when getting through a tough stretch of Disappointment Cleaver or clambering over the bergschrund on the fixed lines on Denali. The ability to put on a burst AND recover while you maintain your activity is developed through interval training.
There are lots of different intervals that can be tailored to accomplish different goals, from natural rolling intervals (Fartlek Intervals), to the 4x4 interval workout. Another useful set of intervals are ladder intervals.
Ladder intervals are sets of increasing and/or decreasing intervals. Ladder intervals can be done in a variety of terrain, from flats, to rolling hills, to a hill climb. A common ladder set might be to do a 1-minute interval, then recover, then do a 2-minute interval, followed by a 4-minute effort, followed by a 6-minute interval. Once you reach your peak (you’ve worked your way up the ladder), start working your way back down, reversing the pattern. After the 6-minute interval, do a 4-minute interval, then a 2-minute interval, and then finish with a last 1-minute interval. As with all interval training, the goal is to complete each one at a similar pace. The 1-minute interval might naturally be a bit faster, but you want to avoid blowing yourself out in the first couple of intervals so that you are just surviving through the remainder.
Another important component to interval training is the recovery time. Recover for between 50-100 percent of the duration of the previous effort. For shorter intervals, recovery time might be closer to 100 percent (you might recover for 1 minute after a 1-minute interval) while longer intervals may be closer to 50 percent (for the 4 and 6-minute intervals). Recover for long enough that your heart rate has dropped and you feel ready for the next set, but not so long that your heart rate returns to a very low zone 1 or 2 effort level. Recovery is best accomplished actively, at a very slow jog, walk, or spin; after all, the ability to recover while moving is what we are trying to develop.
As with all training tools, the ladder intervals can be adjusted to fit your needs. Using longer sets (at a slower pace) will help to build your lactate threshold, while shorter (and faster) sets will help to build your anaerobic threshold and recovery. These can also be done over distances rather than time, such as on a track. An example might be a 100m, 200m, 400m, 800m, 400m, 200m, 100m. Remember that interval training requires a quality warm up and cool down, both to prevent injury, and allow you to perform and get the most out of the workout.
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Need a refresher on interval training? Learn more about general interval training…
Questions? Comments? Share your thoughts here!
very impressive post for mountain climber like me.i am very excited to do my next expedition after reading your article.
Thanks for sharing.
Posted by: Rajendra Timalsina on 5/14/2019 at 8:18 am
Posted by: Brent Okita, Bryan Mazaika
Categories: Expedition Dispatches Mount Rainier
Elevation: 10,000'




Words cannot adequately express how proud and excited we are for you and your team on this amazing accomplishment. You even were able to reach the summit!!
God Bless You!
Posted by: Uncle Gary & Aunt Roe on 5/5/2019 at 10:41 am
Posted by: Brent Okita, Mike King
Categories: Expedition Dispatches Mount Rainier
Elevation: 10,080'


Posted by: Brent Okita, Mike King
Categories: Expedition Dispatches Mount Rainier
Elevation: 10,000'

Posted by: Brent Okita, Mike King
Categories: Expedition Dispatches Mount Rainier
Elevation: 10,080'


Wow such beautiful pictures. Thank you for the update!
Posted by: Lisa Macchione on 4/16/2019 at 5:43 pm
Posted by:
Categories: Mountaineering Fitness & Training

High Intensity Interval Training, often referred to popularly as HIIT training, have been featured in a few recent studies that concluded that a short HIIT workout was as or more effective at promoting cardiovascular health than steady state activity. The first paragraph of a recent New York Times article reads:
Think you’re too busy to work out? We have the workout for you. In minutes, high-intensity interval training (HIIT) will have you sweating, breathing hard and maximizing the health benefits of exercise without the time commitment. Best of all, it’s scientifically proven to work.
Despite the recent attention, interval training is not anything new to seasoned athletes and coaches who have understood the benefits of repetitive high intensity workouts for a long time. Many of the recent studies have focused on previously sedentary people trying to improve basic cardiovascular health, rather than on elite athletes striving towards a performance goal. With that said, we have and continue to encourage climbers to utilize interval training (by it’s nature high intensity) as part of a well-designed training program.
Interval training can accomplish a wide array of tasks and works best when the focus of a workout is clear:
Longer intervals, from 5 to 8 minutes, at 70 – 85% of max heart rate work to improve the lactate threshold, the body’s ability to metabolize and clear lactate build up from muscle cells, increasing the amount of work that the body can perform sustainably. A good example is an elite level marathon runner, who is able to sub six-minute miles for over two hours during a race. The intensity that they are working at is very high, yet the body is able to sustain it over a very prolonged period of time.
Shorter intervals, from 20 seconds to a few minutes, performed at 85 – 95% of max heart rate (very intense!) increase the body’s anaerobic threshold, it’s ability to perform work while in oxygen deficit. Think Olympic swimmer in the 50-meter butterfly: the intensity that they race at surpasses the body’s ability to clear lactic acid and to provide enough oxygen to the muscle cells for them to continue that pace for a long period of time. The race is very short, however, and for that 20-something seconds, their muscles are able to put out an immense amount of power in oxygen deficit.
It may seem as though interval training isn’t as applicable to our sport of mountaineering. We tend not to sustain the very high levels of output, but instead operate for far longer periods at moderate intensity. It is the very definition of an endurance sport. Interval training provides other physiological adaptations however that go beyond the abilities of the skeletal muscles. Interval training is shown to increase cardiac output, by increasing the size of the left ventricle, the stroke volume and the overall contractility of the heart. Increased cardiac output supplies more blood to muscle cells, delivering more oxygen and removing more waste. Additionally, interval training has been shown to increase the size and density of mitochondria in the muscle cells. Mitochondria use oxygen to convert glucose to ATP (the cells’ energy source). Both of these adaptations help endurance athletes go longer, faster and with less effort, and ultimately help us in the mountains.
Interval training is harder on your body than traditional steady state workouts and requires longer to recover from as well. Therefore, too heavy of a focus on interval training can lead to overtraining and injury. More of a good thing isn’t necessarily better. It’s important to realize that a good training plan maintains a balance of high intensity workouts and lower intensity steady state workouts.
As part of the recent HIIT hype, people have championed the fact that HIIT gets more done in less time, even as little as 10 minutes. This may be true for an average person whose goal is to improve overall cardiac health, but for athletes working towards goals in the mountains, remember that there are no short cuts. Time invested in your training will lead to a more enjoyable and successful climb.
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Questions? Comments? Share your thoughts here!
Fantastic insights on integrating HIIT into rock climbing training! Your clear explanations make it effortless for novices like me to recognize the benefits. Thank you!
Posted by: Musclegaragefitness on 12/29/2023 at 4:15 am
Incorporating HIIT into mountain climbing education is a game-changer! Your insights supply a realistic method to elevating health for difficult terrains. Thanks for the treasured guidance!
Posted by: Rejesh raj on 12/18/2023 at 1:29 am
Posted by: Christina Dale
Categories: Expedition Dispatches Everest BC Trek and Lobuche
Elevation: 9,350'




Congratulations. What an accomplishment!
Posted by: Mac on 5/10/2019 at 9:39 pm
Words are inadequate to express how truly proud we are of you and your team on this amazing accomplishment!! Unbelievable you were even able to reach the summit. We are in awe of the feat you and your team achieved. God Bless You!!
Posted by: Uncle Gary and Aunt Roe on 5/5/2019 at 11:53 am
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