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Training with a power meter: un'ipotesi pratica di training
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<blockquote data-quote="ciclotrainer" data-source="post: 2764182" data-attributes="member: 7309"><p>Tra l'altro in premessa è scritto questo</p><p> </p><p><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><p style="text-align: left">It was suggested that change of road slope or gradient can</p></span></span></span></span></p><p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">affect kinetics and kinematics of pedalling. In the case of</p></span></span></span></span></p><p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">uphill cycling, the orientation of the rider and bicycle with</p></span></span></span></span></p><p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">respect to the gravity force may enhance some modifications</p></span></span></span></span></p><p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">of the pedalling technique. </p><p></span><p style="text-align: left"></p><p></span><p style="text-align: left"></p><p></span><p style="text-align: left"></p><p></span><p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="color: #000066"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="color: #000066"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="color: #000066">Caldwell et al. (1998) </span></span></span></span></span></span></span></span></span><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">showed</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">that cyclists produce a greater crank torque during the first</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">120</span></span></span></span><span style="font-family: 'AdvPSSym'"><span style="font-size: 10px"><span style="font-family: 'AdvPSSym'"><span style="font-size: 10px"> </span></span></span></span><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">of the crank cycle and during the first half of the</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">upstroke (180270</span></span></span></span><span style="font-family: 'AdvPSSym'"><span style="font-size: 10px"><span style="font-family: 'AdvPSSym'"><span style="font-size: 10px"></span></span></span></span><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">) at 8% slope compared to 0%. These</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">force changes are combined with the alteration of the pedal</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">orientation to a more toe-up position. The same authors</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">(</span></span></span></span><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="color: #000066"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="color: #000066"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="color: #000066">Caldwell et al., 1999</span></span></span></span></span></span></span></span></span><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">) have also found that the peak ankle</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">plantarflexor and the peak knee extensor moments are</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">higher and occur slightly earlier in the crank cycle at 8%</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">slope. However, all these changes are largely explained by</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">the difference in the pedalling cadence from the 0% slope</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">(82 rpm) to 8% slope (65 rpm) condition. While cadence</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">decreased, total work done per crank revolution increased</span></span></span></span></p> <p style="text-align: left"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">a consequence of holding power output constant. The effect</span></span></span></span></p><p><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"></span></span></span></span></p><p><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px">of the slope on muscular activity is ambiguous.</span></span></span></span></p><p><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"><span style="font-family: 'AdvEPSTIM'"><span style="font-size: 10px"></span></span></span></span></p></blockquote><p></p>
[QUOTE="ciclotrainer, post: 2764182, member: 7309"] Tra l'altro in premessa è scritto questo [FONT=AdvEPSTIM][SIZE=2][FONT=AdvEPSTIM][SIZE=2][LEFT]It was suggested that change of road slope or gradient can affect kinetics and kinematics of pedalling. In the case of uphill cycling, the orientation of the rider and bicycle with respect to the gravity force may enhance some modifications of the pedalling technique. [/LEFT][/SIZE][LEFT][/left][/FONT][LEFT][/left][/SIZE][LEFT][/left][/FONT][LEFT][FONT=AdvEPSTIM][SIZE=2][COLOR=#000066][FONT=AdvEPSTIM][SIZE=2][COLOR=#000066][FONT=AdvEPSTIM][SIZE=2][COLOR=#000066]Caldwell et al. (1998) [/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=AdvEPSTIM][SIZE=2][FONT=AdvEPSTIM][SIZE=2]showed that cyclists produce a greater crank torque during the first 120[/SIZE][/FONT][/SIZE][/FONT][FONT=AdvPSSym][SIZE=2][FONT=AdvPSSym][SIZE=2] [/SIZE][/FONT][/SIZE][/FONT][FONT=AdvEPSTIM][SIZE=2][FONT=AdvEPSTIM][SIZE=2]of the crank cycle and during the first half of the upstroke (180270[/SIZE][/FONT][/SIZE][/FONT][FONT=AdvPSSym][SIZE=2][FONT=AdvPSSym][SIZE=2][/SIZE][/FONT][/SIZE][/FONT][FONT=AdvEPSTIM][SIZE=2][FONT=AdvEPSTIM][SIZE=2]) at 8% slope compared to 0%. These force changes are combined with the alteration of the pedal orientation to a more toe-up position. The same authors ([/SIZE][/FONT][/SIZE][/FONT][FONT=AdvEPSTIM][SIZE=2][COLOR=#000066][FONT=AdvEPSTIM][SIZE=2][COLOR=#000066][FONT=AdvEPSTIM][SIZE=2][COLOR=#000066]Caldwell et al., 1999[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=AdvEPSTIM][SIZE=2][FONT=AdvEPSTIM][SIZE=2]) have also found that the peak ankle plantarflexor and the peak knee extensor moments are higher and occur slightly earlier in the crank cycle at 8% slope. However, all these changes are largely explained by the difference in the pedalling cadence from the 0% slope (82 rpm) to 8% slope (65 rpm) condition. While cadence decreased, total work done per crank revolution increased a consequence of holding power output constant. The effect[/SIZE][/FONT][/SIZE][/FONT][/LEFT][FONT=AdvEPSTIM][SIZE=2][FONT=AdvEPSTIM][SIZE=2] of the slope on muscular activity is ambiguous. [/SIZE][/FONT][/SIZE][/FONT] [/QUOTE]
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Training with a power meter: un'ipotesi pratica di training
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