Researchers at the University of Oregon鈥檚 Biomechanics/Sports Medicine Laboratory wereverifying the same finding. As running shoes got worn down and their cushioning hardened, theOregon researchers revealed in a 1988 study for the Journal of Orthopaedic & Sports PhysicalTherapy, runners鈥?feet stabilized and became less wobbly. It would take about ten years beforescientists came up with an explanation for why the old shoes that sports companies were tellingyou to throw away were better than the new ones they were urging you to buy. At McGillUniversity in Montreal, Steven Robbins, M.D., and Edward Waked, Ph.D., performed a series oftests on gymnasts. They found that the thicker the landing mat, the harder the gymnasts stuck theirlandings. Instinctively, the gymnasts were searching for stability. When they sensed a soft surfaceunderfoot, they slapped down hard to ensure balance. All this I did on horseback, riding on an average forty miles a day. I was paid sixpence a mile for the distance travelled, and it was necessary that I should at any rate travel enough to pay for my equipage. This I did, and got my hunting out of it also. I have often surprised some small country postmaster, who had never seen or heard of me before, by coming down upon him at nine in the morning, with a red coat and boots and breeches, and interrogating him as to the disposal of every letter which came into his office. And in the same guise I would ride up to farmhouses, or parsonages, or other lone residences about the country, and ask the people how they got their letters, at what hour, and especially whether they were delivered free or at a certain charge. For a habit had crept into use, which came to be, in my eyes, at that time, the one sin for which there was no pardon, in accordance with which these rural letter-carriers used to charge a penny a letter, alleging that the house was out of their beat, and that they must be paid for their extra work. I think that I did stamp out that evil. In all these visits I was, in truth, a beneficent angel to the public, bringing everywhere with me an earlier, cheaper, and much more regular delivery of letters. But not unfrequently the angelic nature of my mission was imperfectly understood. I was perhaps a little in a hurry to get on, and did not allow as much time as was necessary to explain to the wondering mistress of the house, or to an open-mouthed farmer, why it was that a man arrayed for hunting asked so many questions which might be considered impertinent, as applying to his or her private affairs. 鈥淕ood-morning, sir. I have just called to ask a few questions. I am a surveyor of the Post Office. How do you get your letters? As I am a little in a hurry, perhaps you can explain at once.鈥?Then I would take out my pencil and notebook, and wait for information. And in fact there was no other way in which the truth could be ascertained. Unless I came down suddenly as a summer鈥檚 storm upon them, the very people who were robbed by our messengers would not confess the robbery, fearing the ill-will of the men. It was necessary to startle them into the revelations which I required them to make for their own good. And I did startle them. I became thoroughly used to it, and soon lost my native bashfulness 鈥?but sometimes my visits astonished the retiring inhabitants of country houses. I did, however, do my work, and can look back upon what I did with thorough satisfaction. I was altogether in earnest; and I believe that many a farmer now has his letters brought daily to his house free of charge, who but for me would still have had to send to the post-town for them twice a week, or to have paid a man for bringing them irregularly to his door. 最新加勒比一本道综合 He knotted the shortened strap carefully and gave it a couple of test steps. Good to go.