Five Months of Daily Standardized Exercise for Sedentary Monkeys

Zérath, E.; Jc, Mestries; C, Gau; Nogues, C; Milhaud, Claude

doi:10.1111/j.1600-0684.1990.tb00465.x

J of Medical Primatology

1990

DOI: 10.1111/j.1600-0684.1990.tb00465.x

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Five Months of Daily Standardized Exercise for Sedentary Monkeys

E. Zérath¹,

Mestries Jc²,

Gau C³

et al.

Abstract: A system to physically exercise rhesus monkeys is described, based on their natural capacity to climb. It is composed of an enclosure where a motor‐driven rope is continually going down. The two stage training to this task is easily performed. The total work of each run, evaluated with the weight of the animal and the distance climbed, may be very stable. It was used to provide five sedentary monkeys with daily physical training for five months.

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Cited by 3 publications

References 16 publications

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Conditioned exercise method for use with nonhuman primates

Rogers

Coelho

Carey

et al. 1992

American J Primatol

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The objective of this study was to demonstrate the feasibility of using appetitive methods to train adult male olive baboons (Papio cynocephalus anubis) , who were socially housed and fitted with indwelling catheter/ transducer systems, to exercise on an inclined, motorized, moving treadmill. All subjects were first trained to walk on a motorized treadmill for 30 min at a speed of approximately 1.6 km/hr on a 0 grade. Upon completion of initial exercise training, six animals were assigned to a low exercise group (LOW), six were assigned to a moderate exercise group (MOD), and six were assigned to a sedentary control group (SED). The LOW group exercised 30 min per day on an elevated treadmill, the MOD group exercised 60 min per day on an elevated treadmill and the SED group did not perform any treadmill exercise. The 12 animals comprising the LOW and MOD groups were exercised 4 days per week and their performance was increased over a subsequent 30-week experimental period. We gradually increased speed and grade demands over several weeks and produced an animal model capable of traveling at speeds up to 5.5 km/hr on a 22% grade and distances up to 3,353 m horizontally and 549 m vertically in a 1-hr session. o 1992 Wiley-Liss, Inc.

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Conditioned exercise method for use with nonhuman primates

Rogers

Coelho

Carey

et al. 1992

American J Primatol

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Bone mass and bone cellular variations after five months of physical training in rhesus monkeys: Histomorphometric study

Bourrin¹,

Zérath²,

Vico³

et al. 1992

Calcif Tissue Int

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Five Rhesus Monkeys (Macaca mulatta), a suitable nonhuman model, performed 5 months of rope-climbing exercise. Duration of the training sessions was progressively increased to reach 1 hour/day after 1 month of training and was maintained until the end of the experiment. Bone mass parameters, bone resorption, and bone formation activity were measured by histomorphometric analysis on iliac crest bone biopsies before and after the experiment. Mineral apposition rate was measured in cortices and trabecular bone after double calcein labeling. Five months of rope-climbing exercise had determined a significant decrease of bone volume with a slight decrease of the number and thickness of trabeculae. This might induce an alteration of biomechanical properties of bone. These architectural modifications were associated with a nonsignificant decrease of bone resorption activity. But the main effect of training was an important decrease of bone formation activity without change of the mineral apposition rate. Endurance exercise at low intensity has determined a decreased bone turnover with osteoblastic depression. This animal experiment points out that exercise modalities might be important in the bone response to training and should be carefully defined for preventive use in humans.

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The effects of a 5-month physical training on iliac bone morphology in monkeys

Zérath

Milhaud

Nogues

1993

Europ. J. Appl. Physiol.

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The present study was designed to provide data on the effects on bone of 5 months of daily exercise in nonhuman primates. The subjects were five male rhesus monkeys with mature skeletons with a body mass of 8-10 kg. The exercise schedule selected to provide endurance training was a daily continuous 1-h climbing task. An iliac crest bone biopsy was performed prior to and at the end of the physical training. The histomorphometric bone study was based upon bone mass and bone cell activity measurements made on nondecalcified bone slides, using trichromic and fluorescent labelling techniques. Results showed a decrease in bone formation, resulting in reduced bone mass at the end of the 5 months. This effect is suggested to be related to the unphysiological climbing regimen imposed on these animals which are naturally used to short periods of rapid exercise. From these investigations it was concluded that even if it is well tolerated, long-term physical endurance training can induce bone loss in primates. Further investigations are needed to determine with accuracy the relationships between bone physiology and physical exercise, and particularly with regard to its type, intensity and duration.

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Five Months of Daily Standardized Exercise for Sedentary Monkeys

Cited by 3 publications

References 16 publications

Conditioned exercise method for use with nonhuman primates

Conditioned exercise method for use with nonhuman primates

Bone mass and bone cellular variations after five months of physical training in rhesus monkeys: Histomorphometric study

The effects of a 5-month physical training on iliac bone morphology in monkeys

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