Weight, food intake, and body composition: effects of exercise and of protein deficiency

El, Crews; Fuge, KW; Lb, Oscai; Jo, Holloszy; Shank, R.A.

doi:10.1152/ajplegacy.1969.216.2.359

Cited by 143 publications

(51 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Similarly, in studies on growing rats, animals which exercised regularly were found to be leaner than sedentary animals that had their food intake restricted so that they gained weight at the same rate as the exercisers (7,8). These observations suggested the possibility that exercise might protect against the loss of lean tissue that can occur when an individual is in negative caloric balance.…”

mentioning

confidence: 93%

“…As a result, the protein intake of the sedentary, food-restricted animals eating the standard diet was considerably lower than that of the exercisers. It has been shown that protein restriction, if it is sufficiently severe, can have a marked effect on lean body mass (8). It appeared likely, therefore, that, if any differences were found between the exercising and the pairedweight animals with respect to lean body mass, it would not be clear whether they were due to the exercise or to the difference in protein intake.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Effects of weight changes produced by exercise, food restriction, or overeating on body composition

Oscai¹,

Holloszy²

1969

J. Clin. Invest.

120

View full text Add to dashboard Cite

A B S T R A C T The body weight of rats was reduced by exercise or by restriction of food intake over a period of 18 wk. Body composition was studied to determine if exercise protects against the loss of lean tissue that can occur as a result of a negative caloric balance.Rats weighing 706 ±14 g were divided into four groups matched for weight. A baseline group was killed at the beginning of the study. An exercising group, fed ad lib., was subjected to a program of swimming. A sedentary, free-eating group was provided with food ad lib. Two sedentary, paired-weight subgroups were calorie restricted so that they lost weight at the same rate as the exercisers. The protein intake of one pairedweight subgroup was matched with that of the exercising group. The other sedentary, paired-weight animals ate the standard diet.There was no significant difference in body composition between the two sedentary, paired-weight subgroups which were, therefore, pooled for comparison with the other groups. The exercisers lost 182 ±19 g as a result of both an increase in caloric expenditure and a decrease in appetite. The sedentary, food-restricted animals lost an average of 182 ±18 g. The sedentary, freeeating animals gained 118 ±13 g. The carcasses of the exercised animals contained significantly less fat and more lean tissue than those of the sedentary, pairedweight animals, providing evidence for a fat mobilizing and protein conserving effect of exercise. The composition of the body substance lost by the exercising animals was 78% fat, 5% protein, 1% minerals, and 16% water, compared to 62% fat, 11% protein, 1% minerals, and 26% water for the sedentary, food-restricted rats.

show abstract

mentioning

confidence: 93%

mentioning

confidence: 99%

Effects of weight changes produced by exercise, food restriction, or overeating on body composition

Oscai¹,

Holloszy²

1969

J. Clin. Invest.

120

View full text Add to dashboard Cite

show abstract

“…Também existem relatos da ausência de diferença para o crescimento corporal de ratos DT comparados com ratos DS. Porém, com a ocorrência de modificações na composição corporal, verificou-se a diminuição da percentagem de gordura da carcaça de animais desnutridos com consequente aumento da massa magra (Crews et al, 1969).…”

Section: Discussionunclassified

“…Entretanto, existem evidências de que o treino físico é benéfico para animais desnutridos, pois acarreta modificações na composição corporal, diminuindo a percentagem de gordura da carcaça desses animais, com consequente aumento da massa magra (Crews, Fuge, Oscai, Holloszy, & Shank, 1969). Oldfors e Sourander (1985) demonstraram que o músculo-esquelético se adapta à desnutrição e que essa adaptação pode ser alterada pela modificação das demandas impostas ao músculo, como acontece no exercício.…”

Section: Introductionunclassified

Treino físico promove aumento de peso em ratos desnutridos sem causar stress oxidativo

et al. 2015

View full text Add to dashboard Cite

ARTIGO ORIGINAL | ORIGINAL ARTICLE RESUMOO objetivo do presente trabalho foi estudar o efeito do exercício no stress oxidativo de ratos desnutridos. Trinta e duas ratas Fischer foram igualmente divididas em Controlo Sedentário (CS), Controlo Treinado (CT), Desnutrido Sedentário (DS) e Desnutrido Treinado (DT). O protocolo de treino consistiu na prática de natação ao longo de trinta minutos contínuos diários, cinco dias por semana durante oito semanas. Os animais do grupo DT apresentaram maior aumento de peso e peso final mais elevado do que os animais do grupo DS. Os valores de superóxido dismutase e sulfidrilas totais não mostraram aumento de stress por efeito do treino, da mesma forma que não foram evidenciados danos hepáticos.Os animais CS e DS apresentaram valores de glicose sérica mais elevados do que os animais CT e DT, respetivamente. Já o teste oral de tolerância à glicose confirmou o aumento significativo apenas para o grupo CS em relação ao CT. Conclui-se que o treino físico provocou o aumento de peso e influenciou o peso final dos animais desnutridos sem aumentar o stress oxidativo no soro e sem modificar a ingestão alimentar ou causar danos hepáticos.Palavras-chaves: treino físico, desnutrição, stress oxidativo, ratos, aumento de peso, ingestão alimentar. ABSTRACTThe aim of the present work was to study the effect of physical exercise on oxidative stress of undernourished rats. Thirty-two female Fischer rats were equally divided into Sedentary Control (SC), Trained Control (TC), Sedentary Undernourished (SU), and Trained Undernourished (TU) groups. The training protocol consisted of swimming continuously for thirty minutes per day five days a week for eight weeks. The TU group showed greater weight gain and final weight compared to the SU one. The values of total sulfhydryl and superoxide dismutase showed no increase of stress because of the training, in the same way that liver damage was not evident. The SC and SU animals showed higher serum glucose values than the TC and TU animals, respectively. However, the oral glucose tolerance test confirmed the significant increase only for the SC compared to the TC group. We conclude that the physical training increased weight gain and final weight in malnourished animals without increasing oxidative stress in serum nor modifying the food intake or causing liver damage.

show abstract

“…Although load-carrying sheep had the same weight of total bone as control sheep, they tended to have more bone in the appendicular skeleton rather than in the axial skeleton (Table 3) (Goss 1978, pp. 68-75), but tensile forces are usually thought to be less important than compressional forces (Malina 1969 (Spaeth et al 1967;Crews et al 1969). …”

Section: Experiments Imentioning

confidence: 99%

The Effect of Load Carrying on Carcass Characteristics and Composition in Sheep

Aalhus¹,

Price²

1990

Can. J. Anim. Sci.

View full text Add to dashboard Cite

show abstract

Weight, food intake, and body composition: effects of exercise and of protein deficiency

Cited by 143 publications

References 0 publications

Effects of weight changes produced by exercise, food restriction, or overeating on body composition

Effects of weight changes produced by exercise, food restriction, or overeating on body composition

Treino físico promove aumento de peso em ratos desnutridos sem causar stress oxidativo

The Effect of Load Carrying on Carcass Characteristics and Composition in Sheep

Contact Info

Product

Resources

About