This question has been eating my head for quite some time now.
I trek often and most of the treks involve climbing up to a peak or something similar. I usually carry heavy loads of around 13-15kgs on my back and I've always found that walking up the slopes of a hill/mountain at a brisker pace is easier with the heavier loads. I climb fast, rest for a minute or two and start off briskly again. However, I have met trekkers who have told me that this is not a good practice and it's better to maintain a slow pace while going up the slopes. I did try this a few times but a slower pace tires me down faster while carrying heavier loads.
Hence, which is better while walking up the slopes? Slower pace or the brisk one? Or is it just a matter of choice and nothing more? (Better in terms of the ease of the climb and avoiding injuries over a period of years)
I would appreciate both personal preferences as well as scientific answers for the question.
Note: I am not referring to high altitude climbs i.e more than 3000m (at higher altitudes, slow pace is the only one advisable due to acclimatization). Also, the slopes I refer to have gradients from 30 - 50 degrees.
Please note that I'm not worried about maintaining the group structure of a trekking group or the time taken for slow vs fast walk. I'm concerned about the injuries one might incur and the ease of the climb.