American journal of physiology . I •uiui f> t NONO oo 52 lO NO o ^ ro i-H I>^ NO -t- 1-H p I-H I-H O 3 ON ro (SI CNl 1—1 OOro (M NO ro vO q I-H ro NO CN3 NO to ro ON to OnO -1-ro (M nC ro ro ro\6 I-H ro r- NO ro ro NO r-H Oro oCO ro NO a CO NO I>. I-H 00 00 NO ?i- NO ro 1-5 I-H to00 to Nx5 CM o CM O ON NO ro ! CM csi (A .2-> 5U o^53 4. So c7t bJD •uiiu X •3^1 =•UIUI \, Force of Voluntary Muscular Contractions. ;63 ^ to 0 d 1—1 00 \0 0. CO p r—( GO COd s ON LO 00 00 (Nl vd \d q 1—( 10 06 to vd r-l 00 CO vd vd q (Nl to 1—1vd UO 7to LO d o 1 vd ? LO d CO -f CO vO LO d q CN I>1 u-j
American journal of physiology . I •uiui f> t NONO oo 52 lO NO o ^ ro i-H I>^ NO -t- 1-H p I-H I-H O 3 ON ro (SI CNl 1—1 OOro (M NO ro vO q I-H ro NO CN3 NO to ro ON to OnO -1-ro (M nC ro ro ro\6 I-H ro r- NO ro ro NO r-H Oro oCO ro NO a CO NO I>. I-H 00 00 NO ?i- NO ro 1-5 I-H to00 to Nx5 CM o CM O ON NO ro ! CM csi (A .2-> 5U o^53 4. So c7t bJD •uiiu X •3^1 =•UIUI \, Force of Voluntary Muscular Contractions. ;63 ^ to 0 d 1—1 00 \0 0. CO p r—( GO COd s ON LO 00 00 (Nl vd \d q 1—( 10 06 to vd r-l 00 CO vd vd q (Nl to 1—1vd UO 7to LO d o 1 vd ? LO d CO -f CO vO LO d q CN I>1 u-j t^ ^ ON _otj 5U 4. s ^- 1 o . 0 •luiu X •uuu \. to exist the cause must be lookedfor ia the use of the differentsprings. The following experiment wasmade to determine whether or nota change corresponding to thatfound for successive contractionsheld true for contractions whenmade alternately. A contractionwas first made with the mediumspring, ten seconds later the muscle Work lmm=lkg. 10-. FiGURE 6. — Alternate contractions withdifferent springs. 10 seconds intervalbetween contractions. The successivecontractions are joined b) unbrokenlines. This figure represents the resultsin Table VI. contracted against the strong springand at intervals of ten seconds al-ternate movements with the springswere made. All the results showsimilar effects; both the work ac-complished and the tension over-come are different when differentdistension springs are used. Theresults from only two subjects arehere given in Tables VI and VII,and in Fig. 6. In Fig. 6 the successive contrac-tions are joined by the unbrokenline. The work done and the ten-sion overcome with the strong 364 Shepherd Ivory Fraiiz. spring are denoted by the broken line, and the dotted line indicatesthe work and tension with the medium spring. In these two experiments, the amount of work accomplished variedfor the two springs in different ways for the two subjects. For onesubject the medium
Size: 2078px × 1203px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookautho, bookcentury1800, bookdecade1890, booksubjectphysiology
