The role of gravity in human walking: pendular energy exchange, external work and optimal speedG A Cavagna
Istituto di Fisiologia Umana, Universita degli Studi di Milano, 20133 Milan, Italy
J Physiol 528:657-68. 2000
..In conclusion, over the range studied, gravity increases the work required to walk, but it also increases the range of walking speeds...
Running backwards: soft landing-hard takeoff, a less efficient reboundG A Cavagna
Dipartimento di Fisiologia Umana, Universita degli Studi di Milano, Via Mangiagalli 32, Milan 20133, Italy
Proc Biol Sci 278:339-46. 2011
..More metabolic energy must be spent in the opposite case when muscle is forced to work against its basic property (i.e. when it must exert a greater force during shortening and a lower force during stretching)...
The bounce of the body in hopping, running and trotting: different machines with the same motorG A Cavagna
Dipartimento di Fisiologia Umana, Universita degli Studi di Milano, 20133 Milan, Italy
Proc Biol Sci 276:4279-85. 2009
..We suggest that the landing-takeoff asymmetry is an index of a lack of elasticity, which increases with increasing the role of muscle relative to that of tendon within muscle-tendon units...
The two asymmetries of the bouncing stepGiovanni A Cavagna
Dipartimento di Fisiologia Umana, Universita degli Studi di Milano, Milan, Italy
Eur J Appl Physiol 107:739-42. 2009
..The increase of the push on the ground with increasing running speed improves the "elastic" rebound of the body by privileging the role of tendons relative to muscle within muscle-tendon units...
The landing-take-off asymmetry of human running is enhanced in old ageG A Cavagna
Istituto di Fisiologia Umana, Universita degli Studi di Milano, 20133 Milan, Italy
J Exp Biol 211:1571-8. 2008
....
Old men running: mechanical work and elastic bounceG A Cavagna
Istituto di Fisiologia Umana, Universita degli Studi di Milano, Via Mangiagalli 32, 20133 Milan, Italy
Proc Biol Sci 275:411-8. 2008
..The net result is that the total work increases with speed more steeply in the old subjects than in young subjects...
The landing-take-off asymmetry in human runningG A Cavagna
Istituto di Fisiologia Umana, Universita degli Studi di Milano, Via Mangiagalli, 32, 20133 Milan, Italy
J Exp Biol 209:4051-60. 2006
..Above this speed, the two durations (<0.1 s) are similar, suggesting that the length change is almost totally due to stretch-recoil of the tendons with nearly isometrically contracting fibres...
Effect of an increase in gravity on the power output and the rebound of the body in human runningG A Cavagna
Istituto di Fisiologia Umana, Universita degli Studi di Milano, 20133 Milan, Italy
J Exp Biol 208:2333-46. 2005
..3 g. These results suggest a similar running mechanics at higher gravity, maintained at the expense of greater energy expenditure...
Pendular energy transduction within the step in human walkingG A Cavagna
Istituto di Fisiologia Umana, Universita degli Studi di Milano, Italy
J Exp Biol 205:3413-22. 2002
..It was found that loading improves the transduction of E(p) to E(k) during the descent of the centre of mass. The improvement is not significant in European subjects, whereas it is highly significant in African women...
An analysis of the rebound of the body in backward human runningG A Cavagna
Dipartimento di Fisiologia Umana, Universita, degli Studi di Milano, 20133 Milan, Italy
J Exp Biol 215:75-84. 2012
..We suggest that the catapult-like mechanism of backward running, although requiring greater energy expenditure and not providing a smoother ride, may allow a safer stretch-shorten cycle of muscle-tendon units...
Energy transfer during stress relaxation of contracting frog muscle fibresM Mantovani
Istituto di Fisiologia Umana, , 20133 Milan, Italy
J Physiol 537:923-39. 2001
..F. Huxley and R. M. Simmons in 1971...
Mechanical power and efficiency in running childrenB Schepens
, , Place Pierre de Coubertin, 1348 Louvain-la-Neuve, Belgium
Pflugers Arch 442:107-16. 2001
..The efficiency of positive work production, calculated as the positive mechanical power divided by the net energy consumption rate, appears to be similar in children and adults (i.e. 0.40-0.55)...