﻿242 
  Dr. 
  A. 
  D. 
  Waller. 
  The 
  Physiological 
  Cost 
  of 
  Muscular 
  

  

  September 
  6th, 
  1919. 
  — 
  Labourer 
  No. 
  1 
  — 
  continued. 
  

  

  

  Time 
  of 
  

   sample 
  

   (seconds). 
  

  

  Ventilation. 
  

  

  Litres. 
  | 
  c.c. 
  per 
  sec. 
  

  

  1 
  

  

  CO; 
  

  

  per 
  cent. 
  

  

  COj, 
  

   c.c. 
  per 
  

   sec. 
  

  

  Second 
  trial 
  (after 
  £ 
  hour 
  

   of 
  rest) 
  — 
  

  

  2nd 
  „ 
  

  

  3rd 
  „ 
  

  

  w 
  i, 
  87-2 
  

  

  Work 
  per 
  sec. 
  = 
  

  

  8 
  

  

  Cost 
  of 
  work 
  per 
  sec. 
  = 
  

  

  Kg.-M. 
  _ 
  2076 
  _ 
  

   C0 
  2 
  3306 
  

  

  C0 
  2 
  /Kg.-M. 
  = 
  1 
  -587 
  c. 
  

  

  Note. 
  — 
  The 
  lower 
  effici< 
  

   to 
  fatigue. 
  The 
  subject 
  sa 
  

   harder 
  than 
  the 
  garden 
  trif 
  

  

  20 
  

   21 
  

   21 
  

  

  x20 
  - 
  20-76 
  

   1 
  

  

  37 
  -06-4 
  = 
  

   3 
  x 
  40 
  = 
  25 
  -2 
  

  

  c. 
  (= 
  8 
  -8 
  calo 
  

   ;ncy 
  in 
  the 
  sec 
  

   id 
  at 
  the 
  end 
  c 
  

   il. 
  

  

  15-5 
  

   20 
  -4 
  

   23 
  -0 
  

  

  Kg.-M. 
  

   33 
  -06 
  c.c. 
  C 
  

   per 
  cent, 
  efl 
  

   ries). 
  

  

  ond 
  as 
  com 
  

   >f 
  the 
  secon 
  

  

  775 
  

   971 
  

   1095 
  

  

  0». 
  

  

  iciency. 
  

  

  pared 
  with 
  th< 
  

   d 
  trial 
  that 
  it 
  

  

  3-8 
  

   3-8 
  

   3-4 
  

  

  : 
  first 
  trial 
  is 
  

   was 
  rery 
  hard 
  

  

  29-45 
  

  

  36 
  -90 
  

  

  37 
  -23 
  

  

  perhaps 
  due 
  j 
  

   work, 
  much 
  | 
  

  

  1 
  

  

  Labourer 
  No. 
  1. 
  Walking 
  at 
  3 
  - 
  8 
  miles 
  per 
  hour 
  on 
  a 
  horizontal 
  path 
  ; 
  15 
  laps, 
  

   at 
  216 
  metres 
  per 
  lap 
  in 
  30 
  min. 
  ; 
  speed 
  2 
  min. 
  per 
  lap 
  or 
  l 
  - 
  8 
  metres 
  

   per 
  second 
  ; 
  samples 
  of 
  expired 
  air 
  taken 
  for 
  about 
  \ 
  min. 
  for 
  the 
  first 
  

   quarter 
  of 
  each 
  of 
  the 
  first 
  three 
  laps 
  and 
  thereafter 
  at 
  the 
  6 
  th, 
  9 
  th, 
  

   12th, 
  and 
  15th 
  lap. 
  The 
  readings 
  were 
  as 
  follows 
  : 
  — 
  

  

  

  Time 
  of 
  

   sample 
  

   (seconds). 
  

  

  Ventilation. 
  

  

  C0 
  2 
  

   per 
  cent. 
  

  

  CO.,, 
  c.c. 
  per 
  sec. 
  

  

  Litres. 
  

  

  c.c. 
  per 
  sec. 
  

  

  1 
  

  

  

  60 
  

  

  12 
  -5 
  

  

  

  3 
  8 
  

  

  6-2 
  

  

  At 
  rest 
  

  

  60 
  

  

  10 
  

  

  167 
  

  

  2-6 
  

  

  4-34 
  

  

  1st 
  lap 
  

  

  32 
  

  

  13 
  

  

  406 
  

  

  3-5 
  

  

  14-21 
  

  

  2nd 
  „ 
  

  

  32 
  

  

  19 
  

  

  594 
  

  

  3-8 
  

  

  22-57 
  

  

  3rd 
  „ 
  

  

  28 
  

  

  18 
  

  

  643 
  

  

  4-2 
  

  

  27-00 
  

  

  6th 
  „ 
  

  

  26 
  

  

  18 
  

  

  692 
  

  

  4-4 
  

  

  30 
  -45") 
  

  

  9th 
  „ 
  

  

  25 
  

  

  19 
  

  

  760 
  

  

  4-0 
  

  

  30 
  -40 
  L 
  Average 
  

  

  12th 
  „ 
  

  

  23 
  

  

  20 
  

  

  870 
  

  

  3-8 
  

  

  33 
  -06 
  f 
  31 
  -66 
  

  

  15th 
  „ 
  

  

  22 
  

  

  20 
  

  

  909 
  

  

  3 
  6 
  

  

  32 
  -72 
  J 
  

  

  At 
  rest, 
  lBt 
  min. 
  

  

  30 
  

  

  18 
  

  

  600 
  

  

  3-5 
  

  

  21 
  -00 
  

  

  

  30 
  

  

  10 
  

  

  333 
  

  

  3-0 
  

  

  10 
  -oo 
  

  

  3rd 
  „ 
  

  

  50 
  

  

  15 
  

  

  300 
  

  

  2-8 
  

  

  8-40 
  

  

  4th 
  „ 
  

  

  50 
  

  

  10 
  

  

  200 
  

  

  2-4 
  

  

  4-80 
  

  

  5th 
  „ 
  

  

  50 
  

  

  9 
  

  

  ISO 
  

  

  2-4 
  

  

  4-32 
  

  

  10th 
  „ 
  

  

  60 
  

  

  10 
  

  

  167 
  

  

  2-4 
  

  

  4-01 
  

  

  Kg.-M. 
  (hor.) 
  = 
  156 
  "96 
  = 
  , 
  

  

  C0 
  2 
  27 
  66 
  

  

  COJKg.-M. 
  (hor.) 
  = 
  -1762. 
  

  

  1 
  kgrm.-metre 
  (hor.) 
  costs 
  0-1762 
  c.c. 
  C0 
  2 
  (= 
  098 
  calorie), 
  

   1 
  „ 
  proper 
  „ 
  T587 
  „ 
  (= 
  8 
  88 
  calories), 
  

  

  .-. 
  1 
  kgrm.-metre 
  proper 
  = 
  9 
  - 
  01 
  kgrm.-metre 
  (hor.), 
  

  

  