Abstract
We investigated energy balance and change of body composition in one athlete in a multistage triathlon, the World Challenge Deca Iron Triathlon 2006, where athletes had to perform one Ironman triathlon of 3.8 km swimming, 180 km cycling and 42.195 km running per day for ten consecutive days. In one well-experienced male ultra-endurance triathlete, we measured body mass, skinfold thicknesses and perimeters of extremities, in order to calculate skeletal muscle mass, fat mass and percentage of body fat. Energy intake was measured by analysis of nutrition, and energy expenditure was calculated using a portable heart rate monitor. This was performed to quantify energy deficit. In addition, bio-impedance measurements were performed to determine fluid metabolism. The athlete finished the race in 128 hours, 22 minutes and 42 seconds in 3rd position. Body mass decreased by 1 kilogram, skeletal muscle mass decreased by 0.9 kilograms and calculated fat mass decreased by 0.8 kilograms. Total body water increased by 2.8 liters. Total energy expenditure for the Deca Iron was 89 112 kilocalories and a total energy deficit of 11 480 kilocalories resulted. We presume that energy deficit was covered by consumption of adipose subcutaneous tissue as well as skeletal muscle mass; the degradation of muscle mass seems to lead to hypoproteinemic edemas.
Key words
ultra‐endurance - metabolism - water - energy expenditure
References
-
1
Arngrímsson S A, Petitt D S, Borrani F, Skinner K A, Cureton K J.
Hyperthermia and maximal oxygen uptake in men and women.
Eur J Appl Physiol.
2004;
92
524-532
-
2
Atwater W O.
Coefficients of digestibility and availability of the nutrients of food.
Proc Am Physiol Soc.
1909;
30
14-19
-
3
Ball S D, Altena T S, Swan P D.
Comparison of anthropometry to DXA: a new prediction equation for men.
Eur J Clin Nutr.
2004;
58
1525-1531
-
4
Bircher S, Enggist A, Jehle T, Knechtle B.
Effects of an extreme endurance race on energy balance and body composition - a case study.
J Sports Sci Med.
2006;
5
154-162
-
5
Boschmann M, Rosenbaum M, Leibel R L, Segal K R.
Metabolic and hemodynamic responses to exercise in subcutaneous adipose tissue and skeletal muscle.
Int J Sports Med.
2002;
23
537-543
-
6
Case S, Evans D, Tibbets G, Case S, Miller D.
Dietary intake of participants in the Iditasport Human Powered Ultra-marathon.
Alaska Med.
1995;
37
20-24
-
7
Daniel J A, Sizer Jr P S, Latman N S.
Evaluation of body composition methods for accuracy.
Biomed Instrum Technol.
2005;
39
397-405
-
8
Davidson L, McNeill G, Haggarty P, Smith J S, Franklin M F.
Free-living energy expenditure of adult men assessed by continuous heart-rate monitoring and doubly-labelled water.
Br J Nutr.
1997;
78
695-708
-
9 Der kleine “Souci-Fachmann-Kraut” .Lebensmitteltabelle für die Praxis. Deutsche Forschungsanstalt für Lebensmittelchemie, Garching bei München, 2. Auflage. Stuttgart; Wissenschaftliche Verlagsgesellschaft mbH 1991
-
10
Dressendorfer R H, Wade C E.
Effects of a 15-d race on plasma steroid levels and leg muscle fitness in runners.
Med Sci Sports Exerc.
1991;
23
954-958
-
11
Frayn K N.
Calculation of substrate oxidation rates in vivo from gaseous exchange.
J Appl Physiol.
1983;
55
628-634
-
12
Gastmann U, Dimeo F, Huonker M, Böcker J, Steinacker J M, Petersen K G, Wieland H, Keul J, Lehmann M.
Ultra-triathlon-related blood-chemical and endocrinological responses in nine athletes.
J Sports Med Phys Fitness.
1998;
38
18-23
-
13
Helge J W, Lundby C, Christensen D L, Langfort J, Messonnier L, Zacho M, Andersen J L, Saltin B.
Skiing across the Greenland icecap: divergent effects on limb muscle adaptations and substrate oxidation.
J Exp Biol.
2003;
206
1075-1083
-
14
Hiilloskorpi H K, Pasanen M E, Folgelholm M G, Laukkanen R M, Manttari A T.
Use of heart rate to predict energy expenditure from low to high activity levels.
Int J Sports Med.
2003;
24
332-336
-
15
Höchli D, Schneiter T, Ferretti G, Howald H, Claassen H, Moia C, Atchou G, Belleri M, Veicsteinas A, Hoppeler H.
Loss of muscle oxidative capacity after an extreme endurance run: the Paris-Dakar Foot-Race.
Int J Sports Med.
1995;
16
343-346
-
16
Kimber N E, Ross J J, Mason S L, Speedy D B.
Energy balance during an Ironman triathlon in male and female triathletes.
Int J Sport Nutr Exerc Metab.
2002;
12
47-62
-
17
Knechtle B, Bircher S.
Changes in body composition during an extreme endurance run.
Schweiz Rundsch Med Prax.
2005;
94
371-377
-
18
Knechtle B, Enggist A, Jehle T.
Energy turnover at the Race across America (RAAM) - a case report.
Int J Sports Med.
2005;
26
499-503
-
19
Kuipers H, Janssen G ME, Bosman F, Frederik P M, Geurten P.
Structural and ultrastructural changes in skeletal muscle associated with long-distance training and running.
Int J Sports Med.
1989;
10
S156-S159
-
20
Laursen P B, Suriano R, Quod M J, Lee H, Abbiss C R, Nosaka K, Martin D T, Bishop D.
Core temperature and hydration status during an Ironman triathlon.
Br J Sports Med.
2006;
40
320-325
-
21
Lee R C, Wang Z, Heo M, Ross R, Janssen I, Heymsfield S B.
Total-body skeletal muscle mass: development and cross-validation of anthropometric prediction models.
Am J Clin Nutr.
2000;
72
796-803
-
22
Lehmann M, Huonker M, Dimeo F, Heinz N, Gastmann U, Treis N, Steinacker J M, Keul J, Kajewski R, Haussinger D.
Serum amino acid concentrations in nine athletes before and after the 1993 Colmar ultra triathlon.
Int J Sports Med.
1995;
16
155-159
-
23
Macfarlane D J.
Can bioelectric impedance monitors be used to accurately estimate body fat in Chinese adults?.
Asia Pac J Clin Nutr.
2007;
16
66-73
-
24
McAnulty S R, McAnulty L, Pascoe D D, Gropper S S, Keith R E, Morrow J D, Gladden L B.
Hyperthermia increases exercise-induced oxidative stress.
Int J Sports Med.
2005;
26
188-192
-
25
Nagel D, Seiler D, Franz H, Leitzmann C, Jung K.
Effects of an ultra-long-distance (1000 km) race on lipid metabolism.
Eur J Appl Physiol.
1989;
59
16-20
-
26
Raschka C, Plath M.
Das Körperfettkompartiment und seine Beziehungen zur Nahrungsaufnahme und klinisch-chemischen Parametern während einer extremen Ausdauerbelastung.
Schweiz Z Sportmed.
1992;
40
13-25
-
27
Raschka C, Plath M, Cerull R, Bernhard W, Jung K, Leithmann C.
Das Körpermuskelkompartiment und seine Beziehungen zur Nahrungsaufname und Blutchemie unter einer extremen Ausdauerbelastung.
Z Ernährungswiss.
1991;
30
276-288
-
28
Reynolds R D, Lickteig J A, Deuster P A, Howard M P, Conway J M, Pietersam A, deStoppelaar J, Deurenberg P.
Energy metabolism increases and regional body fat decreases while regional muscle mass is spared in humans climbing Mt. Everest.
J Nutr.
1999;
129
1307-1314
-
29
Robertshaw M, Swaminathan R.
Biochemical changes after a 100 km hill walk.
J Med.
1993;
24
311-324
-
30
Romijn J A, Coyle E F, Sidossis L S, Gastaldelli A, Horowitz J F, Endert E, Wolfe R R.
Regulation of endogenous fat and carbohydrate metabolism in relation to exercise intensity and duration.
Am J Physiol.
1993;
265
E380-E391
-
31
Sharwood K, Collins M, Goedecke J, Wilson G, Noakes T.
Weight changes, sodium levels, and performance in the South African Ironman triathlon.
Clin J Sport Med.
2002;
12
391-399
-
32
Sharwood K A, Collins M, Goedecke J H, Wilson G, Noakes T D.
Weight changes, medical complications, and performance during an Ironman triathlon.
Br J Sports Med.
2004;
38
718-724
-
33
Sjöström M, Fridén J, Ekblom B.
Endurance, what is it? Muscle morphology after an extremely long distance run.
Acta Physiol Scand.
1987;
130
513-520
-
34
Sjöström M, Johansson C, Lorentzon R.
Muscle pathomorphology in m. quadriceps of marathon runners. Early signs of strain disease or functional adaptation?.
Acta Physiol Scand.
1988;
132
537-542
-
35
Speedy D B, Campbell R, Mulligan G, Robinson D J, Walker C, Gallagher P, Arts J H.
Weight changes and serum sodium concentrations after an ultradistance multisport triathlon.
Clin J Sports Med.
1997;
7
100-103
-
36
Speedy D B, Noakes T D, Rogers I R, Hellemans I, Kimber N E, Boswell D R, Campbell R, Kuttner J A.
A prospective study of exercise-associated hyponatremia in two ultradistance triathletes.
Clin J Sport Med.
2000;
10
136-141
-
37
Speedy D B, Noakes T D, Kimber N E, Rogers I R, Thompson J M, Boswell D R, Ross J J, Campbell R G, Gallagher P G, Kuttner J A.
Fluid balance during and after an Ironman triathlon.
Clin J Sport Med.
2001;
11
44-50
-
38
Väänänen I I, Vihko V.
Physiological and psychological responses to 100 km cross-country skiing during 2 days.
J Sports Med Phys Fitness.
2005;
45
301-305
-
39
Vasudev S, Mohan A, Mohan D, Farooq S, Raj D, Mohan V.
Validation of body fat measurement by skinfolds and two bioelectric impedance methods with DEXA - the Chennai Urban Rural Epidemiology Study (CURES‐3).
J Assoc Physicians India.
2004;
52
877-881
-
40
Volk O, Neumann G.
Verhalten ausgewählter metaboler und hormoneller Parameter während eines Dreifachlangtriathlons.
Ö J Sportmed.
2000;
4
18-23
-
41
Voltaire B, Galy O, Coste O, Recinais S, Callis A, Blonc S, Hertogh C, Hue O.
Effect of fourteen days of acclimatization on athletic performance in tropical climate.
Can J Appl Physiol.
2002;
27
551-562
-
42
Voltaire B, Berthouze-Aranda S, Hue O.
Influence of a hot/wet environment on exercise performance in natives to tropical climate.
J Sport Med Phys Fitness.
2003;
43
306
-
43
Walsh R M, Noakes T D, Hawley J A, Dennis S C.
Impaired high-intensity cycling performance time at low levels of dehydration.
Int J Sports Med.
1994;
15
392-398
-
44
Yamashita Y, Kaya M, Koyama K, Tsujita J, Hori S.
Decreased energy expenditure during prolonged sub-maximal exercise in a warm environment.
Eur J Sport Sci.
2005;
5
153-158
Dr. Beat Knechtle
Gesundheitszentrum St. Gallen
Vadianstr. 26
9001 St. Gallen
Switzerland
Email: beat.knechtle@hispeed.ch
