Philostratus, Gymnasticus 55
“The jumping-weight [halter] was a discovery of the pentathletes—it was developed for jumping [halma] where it gets its name. The rules which render the jumping rather difficult among the competitions urge the one jumping along with the flute and lighten him additionally with the jumping-weight. For, it produces a steadfast directional for the hands and regular and clearly-marked stride along the ground. The regulations clarify how much this is worth—for they do not permit measuring of the jump unless a clear footprint is obtained.
The greater weights of jumping help to exercise shoulders and hands while round weights serve to exercise fingers too. Both heavy and light athletes should practice with weights in all their activities except for moments of rest.”
Ἁλτὴρ δὲ πεντάθλων μὲν εὕρημα, εὕρηται δὲ ἐς τὸ ἅλμα, ἀφ’ οὗ δὴ καὶ ὠνόμασται· οἱ γὰρ νόμοι τὸ πήδημα χαλεπώτερον ἡγούμενοι τῶν ἐν ἀγῶνι τῷ τε αὐλῷ προσεγείρουσι τὸν πηδῶντα καὶ τῷ ἁλτῆρι προσελαφρύνουσι· πομπός τε γὰρ τῶν χειρῶν ἀσφαλὴς καὶ τὸ βῆμα ἑδραῖόν τε καὶ εὔσημον εἰς τὴν γῆν ἄγει. τουτὶ δὲ ὁπόσου ἄξιον οἱ νόμοι δηλοῦσιν· οὐ γὰρ ξυγχωροῦσι διαμετρεῖν τὸ πήδημα, ἢν μὴ ἀρτίως ἔχῃ τοῦ ἴχνους. γυμνάζουσι δὲ οἱ μὲν μακροὶ τῶν ἁλτήρων ὤμους τε καὶ χεῖρας, οἱ δὲ σφαιροειδεῖς καὶ δακτύλους. παραληπτέοι δὲ καὶ κούφοις ὁμοίως καὶ βαρέσιν ἐς πάντα γυμνάσια πλὴν τοῦ ἀναπαύοντος